5,295 water systems tracked in Iowa, serving 3,541,607 people. 124 systems exceed EPA's 4 ppt limit for PFOA or PFOS and must be treating for PFAS by April 2029.
Iowa follows federal EPA MCLs (PFOA/PFOS: 4 ppt).
IA follows federal EPA MCLs. PFAS detected in multiple drinking water systems.
Iowa follows federal EPA MCLs. PFAS contamination detected around Iowa Army Ammunition Plant and other sites.
Free check against EPA UCMR5 data for PFOA and PFOS above the 4 ppt limit, plus weekly Iowa MCL, deadline, and funding alerts.
Firms with PFAS-related federal awards routed to Iowa (USASpending). See the national top 50 →
| Rank | Recipient | Total awarded | # awards |
|---|---|---|---|
| 1 | IOWA DEPARTMENT OF NATURAL RESOURCES | $85,764,000 | 5 |
| 2 | IOWA STATE UNIVERSITY OF SCIENCE AND TECHNOLOGY | $1,000,000 | 1 |
| 3 | THE UNIVERSITY OF IOWA | $855,250 | 2 |
| 4 | AMERICAN ORDNANCE LLC | $6,770 | 1 |
| System | City | Population | PFOA (ppt) | PFOS (ppt) | Status |
|---|---|---|---|---|---|
| DES MOINES WATER WORKS IA7727031 | DES MOINES | 246,055 | — | — | Compliant |
| IOWA-AMERICAN WTR CO-DAVENPORT IA8222001 | DAVENPORT | 147,720 | 4.1 | — | Exceeds |
| CEDAR RAPIDS WATER DEPARTMENT IA5715093 | CEDAR RAPIDS | 142,364 | — | — | Compliant |
| SIOUX CITY WATER SUPPLY IA9778054 | SIOUX CITY | 85,791 | 6 | 4.3 | Exceeds |
| ANKENY, CITY OF IA7709053 | ANKENY | 76,207 | — | — | Compliant |
| WEST DES MOINES WATER WORKS IA7785007 | WEST DES MOINES | 73,959 | — | — | Compliant |
| WATERLOO WATER WORKS IA0790074 | WATERLOO | 69,504 | — | — | Exceeds |
| IOWA CITY WATER DEPARTMENT |
| IOWA CITY |
| 68,753 |
| — |
| — |
| Compliant |
| COUNCIL BLUFFS WATER WORKS IA7820080 | COUNCIL BLUFFS | 64,447 | — | — | Compliant |
| DUBUQUE WATER WORKS IA3126052 | DUBUQUE | 59,667 | 5.1 | — | Exceeds |
| AMES WATER TREATMENT PLANT IA8503039 | AMES | 55,177 | — | — | Compliant |
| URBANDALE WATER UTILITY IA7780042 | URBANDALE | 45,605 | — | — | Compliant |
| ISU IA8503528 | AMES | 42,000 | — | — | Compliant |
| MARION MUNICIPAL WATER DEPT IA5751035 | MARION | 41,623 | — | — | Compliant |
| CEDAR FALLS MUNICIPAL WATER UTILITIES IA0709084 | CEDAR FALLS | 40,713 | — | — | Compliant |
| IA REGIONAL UTILITIES ASSOC (WAVERLY) IA0990701 | NEWTON | 37,820 | — | — | Compliant |
| BETTENDORF WATER SUPPLY IA8209007 | BETTENDORF | 33,215 | — | — | Compliant |
| RATHBUN REGIONAL WATER ASSN (RATHBUN) IA0400900 | CENTERVILLE | 33,000 | — | — | Compliant |
| WAUKEE WATER SUPPLY IA2573080 | WAUKEE | 31,823 | — | — | Compliant |
| CENTRAL IA WATER ASSN (NEWTON) IA5059704 | NEWTON | 28,250 | — | — | Compliant |
| MARSHALLTOWN WATER WORKS IA6469042 | MARSHALLTOWN | 27,680 | — | — | Compliant |
| MASON CITY WATER DEPARTMENT IA1750048 | MASON CITY | 27,338 | — | — | Compliant |
| UNIVERSITY WATER SYSTEM IA5225101 | IOWA CITY | 26,684 | — | — | Compliant |
| BURLINGTON MUNICIPAL WATERWORKS IA2909053 | BURLINGTON | 26,015 | — | — | Compliant |
| FORT DODGE WATER SUPPLY IA9433050 | FORT DODGE | 25,874 | — | — | Compliant |
| OTTUMWA WATER WORKS IA9083012 | OTTUMWA | 25,529 | — | — | Compliant |
| MUSCATINE POWER & WATER IA7048001 | MUSCATINE | 25,516 | 7.2 | 4.5 | Exceeds |
| JOHNSTON MUNICIPAL WATER SUPPLY IA7740011 | JOHNSTON | 24,897 | — | — | Compliant |
| IOWA-AMERICAN WTR CO-CLINTON DISTRICT IA2326048 | CLINTON | 24,769 | — | — | Compliant |
| NORTH LIBERTY WATER SUPPLY IA5252072 | NORTH LIBERTY | 23,276 | — | — | Compliant |
| CORALVILLE MUNI WATER SYSTEM IA5208071 | CORALVILLE | 22,318 | — | — | Compliant |
| SIRWA #2 (CRESTON) IA8080701 | CRESTON | 20,793 | — | — | Compliant |
| CLIVE WATER DEPARTMENT IA7720051 | CLIVE | 20,277 | — | — | Compliant |
| WARREN WATER DISTRICT IA9133701 | INDIANOLA | 20,095 | — | — | Compliant |
| ALTOONA WATER SUPPLY IA7707030 | ALTOONA | 19,565 | — | — | Compliant |
| GRIMES WATER SUPPLY IA7736011 | GRIMES | 17,809 | — | — | Compliant |
| WAPELLO RURAL WATER ASSOC. IA9000742 | OTTUMWA | 17,263 | — | — | Compliant |
| NEWTON WATER SUPPLY IA5059064 | NEWTON | 16,518 | — | — | Compliant |
| INDIANOLA WATER SUPPLY IA9133075 | INDIANOLA | 15,833 | — | — | Compliant |
| NORWALK WATER SUPPLY IA9164078 | NORWALK | 14,334 | — | — | Compliant |
| POWESHIEK WATER ASSOCIATION IA8670701 | TAMA | 13,920 | — | — | Compliant |
| XENIA RWD (DES MOINES) IA2573701 | BOUTON | 12,860 | — | — | Compliant |
| OSKALOOSA MUNICIPAL WATER DEPT IA6273005 | OSKALOOSA | 12,808 | — | — | Compliant |
| BOONE WATER WORKS IA0819033 | BOONE | 12,704 | — | — | Compliant |
| RATHBUN REG WATER ASSN (FT MADISON) IA0400901 | CENTERVILLE | 11,840 | — | — | Compliant |
| STORM LAKE WATER TREATMENT PLANT IA1178097 | STORM LAKE | 11,431 | — | — | Compliant |
| SPENCER MUNICIPAL WATER UTILITY IA2171071 | SPENCER | 11,325 | — | — | Compliant |
| FT MADISON MUNI WATER WORKS IA5625062 | FORT MADISON | 11,087 | — | — | Compliant |
| PLEASANT HILL WATER DEPARTMENT IA7767092 | PLEASANT HILL | 11,079 | — | — | Compliant |
| PELLA WATER WORKS DEPARTMENT IA6368033 | PELLA | 11,052 | — | — | Compliant |
| LEMARS WATER DEPARTMENT IA7540174 | LEMARS | 10,606 | — | — | Compliant |
| WAVERLY WATER DEPARTMENT IA0990085 | WAVERLY | 10,394 | 7.2 | — | Exceeds |
| CARROLL MUNICIPAL WATER SUPPLY IA1415072 | CARROLL | 10,184 | — | — | Compliant |
| KEOKUK MUNICIPAL WATER WORKS IA5640019 | KEOKUK | 9,900 | — | — | Compliant |
| FAIRFIELD WATER SUPPLY IA5131033 | FAIRFIELD | 9,821 | — | — | Compliant |
| MAHASKA RURAL WATER SYSTEM, INC. IA6273901 | OSKALOOSA | 9,818 | — | — | Compliant |
| GRINNELL WATER DEPARTMENT IA7930008 | GRINNELL | 9,564 | — | — | Compliant |
| BONDURANT MUNI WATER SUPPLY IA7717032 | BONDURANT | 9,393 | — | — | Compliant |
| DENISON WATER SUPPLY IA2424027 | DENISON | 9,381 | — | — | Compliant |
| MOUNT PLEASANT MUNICIPAL UTILITIES IA4453016 | MOUNT PLEASANT | 9,274 | — | — | Compliant |
| IOWA LAKES REGIONAL WATER - OSGOOD IA3060001 | SPENCER | 9,021 | — | — | Compliant |
| KNOXVILLE WATER WORKS IA6342036 | KNOXVILLE | 8,400 | — | — | Compliant |
| RATHBUN REG WTR ASSN (BURLINGTON) IA0400902 | CENTERVILLE | 8,375 | — | — | Compliant |
| SIOUX CENTER MUNICIPAL WATER DEPARTMENT IA8486053 | SIOUX CENTER | 8,231 | — | — | Compliant |
| PERRY MUNICIPAL WATER WORKS IA2561036 | PERRY | 7,836 | — | — | Compliant |
| WEBSTER CITY WATER SUPPLY IA4063094 | WEBSTER CITY | 7,825 | — | — | Compliant |
| CLEAR LAKE WATER DEPARTMENT IA1716076 | CLEAR LAKE | 7,687 | — | — | Compliant |
| DECORAH WATER DEPARTMENT IA9630012 | DECORAH | 7,615 | — | — | Compliant |
| TIFFIN WATER SUPPLY IA5288021 | TIFFIN | 7,577 | — | — | Compliant |
| SOUTHEAST POLK RWD IA7774701 | DES MOINES | 7,565 | — | — | Compliant |
| CRESTON WATER SUPPLY IA8816089 | CRESTON | 7,536 | — | — | Compliant |
| CHARLES CITY WATER SUPPLY IA3405012 | CHARLES CITY | 7,446 | — | — | Compliant |
| WASHINGTON WATER DEPARTMENT IA9271068 | WASHINGTON | 7,362 | — | — | Compliant |
| ATLANTIC MUNICIPAL UTILITIES IA1509074 | ATLANTIC | 7,252 | — | — | Compliant |
| HIAWATHA WATER DEPT IA5735045 | HIAWATHA | 7,183 | — | — | Compliant |
| OSCEOLA RURAL WATER SYSTEM-NORTH IA7227701 | MAY CITY | 7,002 | — | — | Compliant |
| NEVADA WATER SUPPLY IA8562044 | NEVADA | 6,925 | — | — | Compliant |
| IOWA LAKES REGIONAL WATER IA2100701 | SPENCER | 6,755 | — | — | Compliant |
| ELDRIDGE WATER SUPPLY IA8230008 | ELDRIDGE | 6,726 | — | — | Compliant |
| POLK CITY WATER SUPPLY IA7770050 | POLK CITY | 6,533 | — | — | Compliant |
| ADEL MUNICIPAL WATER WORKS IA2503003 | ADEL | 6,461 | — | — | Compliant |
| ORANGE CITY MUNICIPAL WATER DEPARTMENT IA8474097 | ORANGE CITY | 6,267 | — | — | Compliant |
| SPIRIT LAKE WATERWORKS IA3070078 | SPIRIT LAKE | 6,167 | — | — | Compliant |
| MAQUOKETA MUNICIPAL WATER IA4950029 | MAQUOKETA | 6,128 | — | — | Compliant |
| XENIA RWD (NORTH) IA9425701 | BOUTON | 6,122 | — | — | Compliant |
| INDEPENDENCE WATER DEPT IA1037070 | INDEPENDENCE | 6,064 | — | — | Compliant |
| IOWA TEST 3 IA0000003 | SLOAN | 6,000 | — | — | Compliant |
| ASBURY MUNICIPAL WATER SYSTEM IA3102001 | ASBURY | 5,943 | — | — | Compliant |
| OELWEIN MUNICIPAL WATER WORKS IA3353088 | OELWEIN | 5,920 | — | — | Compliant |
| ESTHERVILLE WATER TREATMENT PLANT IA3218024 | ESTHERVILLE | 5,904 | — | — | Compliant |
| MARION CO. RURAL WATER DISTRICT IA6342711 | KNOXVILLE | 5,687 | — | — | Compliant |
| RED OAK WATER SUPPLY IA6950075 | RED OAK | 5,596 | — | — | Compliant |
| DE WITT WATER SUPPLY IA2330036 | DEWITT | 5,514 | — | — | Compliant |
| SHELDON WATER DEPARTMENT IA7170040 | SHELDON | 5,512 | — | — | Compliant |
| OSCEOLA WATER WORKS IA2038038 | OSCEOLA | 5,503 | — | — | Compliant |
| ALGONA MUNICIPAL UTILITIES IA5502015 | ALGONA | 5,487 | — | — | Compliant |
| GLENWOOD MUNICIPAL UTILITIES IA6525090 | GLENWOOD | 5,449 | — | — | Compliant |
| WINTERSET MUNICIPAL WATERWORKS IA6171029 | WINTERSET | 5,428 | — | — | Compliant |
| SOUTHERN SIOUX COUNTY RURAL WATER IA8400733 | IRETON | 5,420 | — | — | Compliant |
| CENTERVILLE MUNICIPAL WATERWORKS IA0407008 | CENTERVILLE | 5,344 | — | — | Compliant |
| CHEROKEE WATER SUPPLY - PLANT 1 IA1811020 | CHEROKEE | 5,199 | — | — | Compliant |
| IOWA FALLS WATER DEPARTMENT IA4260097 | IOWA FALLS | 5,146 | — | — | Compliant |
| MANCHESTER WATER SUPPLY IA2839021 | MANCHESTER | 5,077 | — | — | Compliant |
| HARLAN MUNICIPAL UTILITIES IA8335029 | HARLAN | 5,067 | — | — | Compliant |
| SERGEANT BLUFF WATER SUPPLY IA9774033 | SERGEANT BLUFF | 5,015 | — | — | Compliant |
| XENIA RWD (BOONE) IA0844006 | BOUTON | 4,975 | — | — | Compliant |
| VINTON MUNICIPAL WATER DEPT IA0688053 | VINTON | 4,938 | — | — | Compliant |
| SHENANDOAH WATER DEPT IA7383045 | SHENANDOAH | 4,925 | — | — | Compliant |
| WINDSOR HEIGHTS WATER DEPT. IA7791027 | WINDSOR HEIGHTS | 4,891 | — | — | Compliant |
| HUMBOLDT MUNICIPAL WATER DEPT IA4641064 | HUMBOLDT | 4,792 | — | — | Compliant |
| SAC & FOX (MESKWAKI) IN IOWA 070000003 | TAMA | 4,765 | — | — | Compliant |
| CAMANCHE WATER SUPPLY IA2322066 | CAMANCHE | 4,570 | — | — | Compliant |
| EVANSDALE WATER WORKS IA0723027 | EVANSDALE | 4,561 | — | — | Compliant |
| MOUNT VERNON WATER SUPPLY IA5758021 | MOUNT VERNON | 4,527 | — | — | Compliant |
| DYERSVILLE MUNICIPAL WATER CO IA3130091 | DYERSVILLE | 4,477 | — | — | Compliant |
| ANAMOSA MUNICIPAL WATER SUPPLY IA5307048 | ANAMOSA | 4,457 | — | — | Compliant |
| CHARITON MUNICIPAL WATER WORKS IA5903011 | CHARITON | 4,381 | — | — | Compliant |
| CLARINDA WATER PLANT IA7329029 | CLARINDA | 4,372 | — | — | Compliant |
| HAMPTON MUNI WATER WORKS IA3544024 | HAMPTON | 4,337 | — | — | Compliant |
| FOREST CITY WATER SUPPLY IA9525047 | FOREST CITY | 4,285 | — | — | Compliant |
| HUXLEY WATERWORKS DEPT IA8538066 | HUXLEY | 4,244 | — | — | Compliant |
| JEFFERSON WATER DEPARTMENT IA3742004 | JEFFERSON | 4,182 | — | — | Compliant |
| CARLISLE WATER SUPPLY IA9113071 | CARLISLE | 4,170 | — | — | Compliant |
| REGIONAL WATER IA8300184 | AVOCA | 4,132 | — | — | Compliant |
| SIRWA #3 (OSCEOLA) IA2038701 | CRESTON | 4,080 | — | — | Compliant |
| ROCK VALLEY WATER SUPPLY IA8482096 | ROCK VALLEY | 4,059 | — | — | Compliant |
| MONTICELLO WATER SUPPLY IA5343098 | MONTICELLO | 4,040 | — | — | Compliant |
| WEST LIBERTY WATER UTILITY IA7073010 | WEST LIBERTY | 3,938 | — | — | Compliant |
| CRESCO WATERWORKS IA4515087 | CRESCO | 3,913 | — | — | Compliant |
| WORTH CO INTERCHANGE 214 WATER SUPPLY IA9855202 | MANLY | 3,850 | — | — | Compliant |
| WAUKON WATER DEPARTMENT IA0398082 | WAUKON | 3,827 | — | — | Compliant |
| CARTER LAKE WATER DISTRICT IA7812079 | CARTER LAKE | 3,791 | — | — | Compliant |
| EMMETSBURG MUNICIPAL WATER DEPARTMENT IA7428021 | EMMETSBURG | 3,733 | — | — | Compliant |
| WEST BURLINGTON MUNI. WATER SUPPLY IA2985002 | WEST BURLINGTON | 3,728 | 5.3 | — | Exceeds |
| ALBIA MUNICIPAL WATER WORKS IA6803010 | ALBIA | 3,721 | — | — | Compliant |
| OSAGE MUNICIPAL WATER SUPPLY IA6663001 | OSAGE | 3,637 | — | 4.2 | Exceeds |
| EAGLE GROVE WATER SUPPLY IA9926096 | EAGLE GROVE | 3,601 | — | — | Compliant |
| WEST CENTRAL RWA - NISH SYSTEM IA1400902 | MANNING | 3,573 | — | — | Compliant |
| SOUTHWEST REG WATER DISTRICT (RED OAK) IA6950701 | CLARINDA | 3,500 | — | — | Compliant |
| NEW HAMPTON WATER SUPPLY IA1970051 | NEW HAMPTON | 3,494 | — | — | Compliant |
| XENIA RWD (WOODWARD) IA2576705 | BOUTON | 3,465 | — | — | Compliant |
| MILFORD MUNICIPAL UTILITIES IA3050079 | MILFORD | 3,431 | — | — | Compliant |
| RURAL WATER SYSTEM #1 IA8400722 | HOSPERS | 3,428 | — | — | Compliant |
| STORY CITY WATER DEPT IA8584000 | STORY CITY | 3,357 | — | — | Compliant |
| WILLIAMSBURG PUBLIC WATER SUPPLY IA4884023 | WILLIAMSBURG | 3,345 | — | — | Compliant |
| CHEROKEE RWS - CHEROKEE SUBSYSTEM IA1811001 | CHEROKEE | 3,315 | — | — | Compliant |
| TIPTON WATER SUPPLY IA1689022 | TIPTON | 3,149 | — | — | Compliant |
| ROBINS, CITY OF IA5776001 | ROBINS | 3,142 | — | — | Compliant |
| TAMA WATER SUPPLY IA8670013 | TAMA | 3,130 | — | — | Compliant |
| MADRID WATER DEPARTMENT IA0848015 | PERRY | 3,090 | — | — | Compliant |
| GARNER WATER WORKS IA4130075 | GARNER | 3,065 | — | — | Compliant |
| SOLON WATER DEPT IA5282062 | SOLON | 3,018 | — | — | Compliant |
| SOUTHWEST REG WATER DISTRICT (CLARINDA) IA7383901 | CLARINDA | 2,942 | — | — | Compliant |
| WILTON WATER SUPPLY IA7078026 | WILTON | 2,924 | — | — | Compliant |
| ONAWA MUNICIPAL WATER PLANT IA6739095 | ONAWA | 2,906 | — | — | Compliant |
| LAKE PANORAMA WATER COMPANY IA3900301 | PANORA | 2,900 | — | — | Compliant |
| LE CLAIRE UTILITIES DEPT IA8245066 | LECLAIRE | 2,868 | — | — | Compliant |
| SIBLEY PUBLIC WATER SUPPLY IA7245047 | SIBLEY | 2,860 | — | — | Compliant |
| FAIRFAX WATER SUPPLY IA5731032 | FAIRFAX | 2,828 | — | — | Compliant |
| CLARION WATER SUPPLY IA9909031 | CLARION | 2,810 | — | — | Compliant |
| GRUNDY CENTER WATER SUPPLY IA3833013 | GRUNDY CENTER | 2,796 | — | — | Compliant |
| BLOOMFIELD MUNI WATER DEPT IA2613019 | BLOOMFIELD | 2,792 | — | — | Compliant |
| HAWARDEN WATER SUPPLY IA8434040 | HAWARDEN | 2,700 | — | — | Compliant |
| CENTRAL IA WATER ASSN (MARSHALLTOWN) IA6469071 | NEWTON | 2,700 | — | — | Compliant |
| MISSOURI VALLEY WATER SUPPLY IA4344088 | MISSOURI VALLEY | 2,678 | — | — | Compliant |
| ELDORA WATER SUPPLY IA4236005 | ELDORA | 2,664 | — | — | Compliant |
| KALONA WATER DEPT IA9233012 | KALONA | 2,630 | — | — | Compliant |
| ROCK RAPIDS MUNICIPAL WATER WORKS IA6065092 | ROCK RAPIDS | 2,611 | — | — | Compliant |
| SIRWA - CORNING IA0207704 | CRESTON | 2,585 | — | — | Compliant |
| CENTER POINT WATER SUPPLY IA5718006 | CENTER POINT | 2,579 | — | — | Compliant |
| HUDSON WATER SUPPLY IA0737062 | HUDSON | 2,546 | — | — | Compliant |
| WEST UNION WATER SUPPLY IA3383014 | WEST UNION | 2,540 | — | — | Compliant |
| MITCHELLVILLE WATER SUPPLY IA7751092 | MITCHELLVILLE | 2,515 | — | — | Compliant |
| POSTVILLE WATER DEPARTMENT IA0375053 | POSTVILLE | 2,513 | — | — | Compliant |
| WEST BRANCH WATER WORKS IA1694000 | WEST BRANCH | 2,509 | — | — | Compliant |
| JESUP MUNICIPAL WATER SUPPLY IA1044006 | JESUP | 2,508 | — | — | Compliant |
| POWESHIEK WATER ASSOCIATION (IAC) IA4868701 | TAMA | 2,490 | — | — | Compliant |
| BELMOND WATER SUPPLY IA9905003 | BELMOND | 2,463 | — | — | Compliant |
| MARENGO WATER SUPPLY IA4843033 | MARENGO | 2,435 | — | — | Compliant |
| W CENTRAL RWA - DENISON SUBSYS IA2424701 | MANNING | 2,428 | — | — | Compliant |
| OGDEN MUNICIPAL UTILITIES IA0858090 | OGDEN | 2,419 | — | — | Compliant |
| TOLEDO WATER SUPPLY IA8676027 | TOLEDO | 2,399 | — | — | Compliant |
| PARK VIEW WATER & SANITARY DISTRICT IA8200855 | ELDRIDGE | 2,389 | — | — | Compliant |
| CASCADE MUNICIPAL WATER SUPPLY IA3118080 | CASCADE | 2,386 | — | — | Compliant |
| HULL WATER SUPPLY IA8444063 | HULL | 2,384 | — | — | Compliant |
| BELLE PLAINE WATER DEPT IA0610099 | BELLE PLAINE | 2,380 | — | — | Compliant |
| BELLEVUE MUNICIPAL UTILITIES IA4910000 | BELLEVUE | 2,363 | — | — | Compliant |
| ELY WATER SUPPLY IA5728018 | ELY | 2,328 | — | — | Compliant |
| COLFAX WATER SUPPLY IA5009056 | COLFAX | 2,305 | — | — | Compliant |
| LA PORTE CITY UTILITIES IA0743057 | LAPORTE CITY | 2,284 | — | — | Compliant |
| PEOSTA WATER SUPPLY IA3170001 | PEOSTA | 2,278 | — | — | Compliant |
| ROCKWELL CITY WATER SUPPLY IA1376098 | ROCKWELL CITY | 2,250 | — | — | Compliant |
| LISBON WATER SUPPLY IA5748086 | LISBON | 2,233 | — | — | Compliant |
| ROCK VALLEY RURAL WATER DISTRICT IA8482701 | ROCK VALLEY | 2,230 | — | — | Compliant |
| GREENFIELD MUNICIPAL UTILITIES IA0140007 | GREENFIELD | 2,227 | — | — | Compliant |
| LAKE MILLS MUNICIPAL WATER DEPT-SOUTH IA9545044 | LAKE MILLS | 2,158 | — | — | Compliant |
| OSCEOLA RURAL WATER SYSTEM-SOUTH IA7177701 | MAY CITY | 2,112 | — | — | Compliant |
| WAPELLO MUNICIPAL WATER WORKS IA5879063 | WAPELLO | 2,096 | — | — | Compliant |
| SAC CITY MUNICIPAL WATER PLANT IA8150015 | SAC CITY | 2,093 | — | — | Compliant |
| ALTA MUNICIPAL WATER PLANT IA1108025 | ALTA | 2,087 | — | — | Compliant |
| NORTHWOOD WATERWORKS IA9855077 | NORTHWOOD | 2,072 | — | — | Compliant |
| WEST DUBUQUE INDUSTRIAL PARK WATER IA3150001 | DUBUQUE | 2,065 | — | — | Compliant |
| BRITT WATER WORKS IA4103045 | BRITT | 2,064 | — | — | Compliant |
| AADC IA3126342 | ASBURY | 2,057 | — | — | Compliant |
| ATKINS MUNICIPAL WATER WORKS IA0603072 | ATKINS | 2,056 | — | — | Compliant |
| AUDUBON WATER SUPPLY IA0505077 | AUDUBON | 2,053 | — | — | Compliant |
| IDA GROVE WATER UTILITY IA4728067 | IDA GROVE | 2,051 | — | — | Compliant |
| SUMNER WATER SUPPLY IA0970006 | SUMNER | 2,030 | — | — | Compliant |
| LAMONI MUNICIPAL UTILITIES IA2740050 | LAMONI | 2,029 | — | — | Compliant |
| EPWORTH WATER SUPPLY IA3133033 | EPWORTH | 2,023 | — | — | Compliant |
| PARKERSBURG WATER SUPPLY IA1281028 | PARKERSBURG | 2,019 | — | — | Compliant |
| MONROE WATER SUPPLY IA5054096 | MONROE | 2,007 | — | — | Compliant |
| SIGOURNEY MUNI WATER WORKS IA5475050 | SIGOURNEY | 2,004 | — | — | Compliant |
| POWESHIEK WATER ASSOCIATION (CR) IA5715702 | TAMA | 2,000 | — | — | Compliant |
| GREENFIELD PLAZA BENEFITED WTR DISTRICT IA7700801 | DES MOINES | 2,000 | — | — | Compliant |
| LAKEWOOD BENEFITED WATER DISTRICT IA9100879 | NORWALK | 1,972 | — | — | Compliant |
| DENVER WATER SUPPLY IA0915030 | DENVER | 1,919 | — | — | Compliant |
| NEW LONDON MUNIC WATER DEPT IA4458060 | NEW LONDON | 1,910 | — | — | Compliant |
| DALLAS CENTER WATER SUPPLY IA2520098 | DALLAS CENTER | 1,901 | — | — | Compliant |
| POCAHONTAS WATER DEPARTMENT IA7633049 | POCAHONTAS | 1,877 | — | — | Compliant |
| DURANT WATER SUPPLY IA1636090 | DURANT | 1,871 | — | — | Compliant |
| LEON WATER SUPPLY IA2742076 | LEON | 1,830 | — | — | Compliant |
| COLUMBUS JUNCTION WATER SUPPLY IA5815064 | COLUMBUS JUNCTION | 1,830 | — | — | Compliant |
| GUTTENBERG WATER UTILITY IA2242018 | GUTTENBERG | 1,817 | — | — | Compliant |
| STUART WATER SUPPLY IA0180001 | STUART | 1,814 | — | — | Compliant |
| PARK VIEW VILLAGE IA7736301 | ANKENY | 1,800 | — | — | Compliant |
| FARLEY WATER SUPPLY IA3135018 | FARLEY | 1,766 | — | — | Compliant |
| LYON-SIOUX RWS-DOON IA6000733 | ROCK RAPIDS | 1,765 | — | — | Compliant |
| PONDEROSA UTILITIES INC. IA7950300 | MONTEZUMA | 1,750 | — | — | Compliant |
| CORNING MUNI WATER DEPARTMENT IA0220075 | CORNING | 1,735 | — | — | Compliant |
| LAKE CITY WATER SUPPLY IA1345043 | LAKE CITY | 1,731 | — | — | Compliant |
| WEST CENTRAL RWA-BOYER SYSTEM IA1400903 | MANNING | 1,715 | — | — | Compliant |
| SIRWA #1 (GREENFIELD) IA0140701 | CRESTON | 1,712 | — | — | Compliant |
| MANSON WATER SUPPLY IA1351027 | MANSON | 1,709 | — | — | Compliant |
| PRAIRIE CITY WATER WORKS IA5064055 | PRAIRIE CITY | 1,703 | — | — | Compliant |
| AVOCA WATER WORKS IA7803080 | AVOCA | 1,697 | — | — | Compliant |
| MEDIAPOLIS WATER SUPPLY IA2948062 | MEDIAPOLIS | 1,688 | — | — | Compliant |
| MOVILLE WATER SUPPLY IA9753022 | MOVILLE | 1,687 | — | — | Compliant |
| MOUNT AYR WATER TREATMENT PLANT IA8055014 | MOUNT AYR | 1,683 | — | — | Compliant |
| REMSEN MUNICIPAL UTILITIES IA7568079 | REMSEN | 1,678 | — | — | Compliant |
| PLEASANTVILLE WATER WORKS IA6377046 | PLEASANTVILLE | 1,676 | — | — | Compliant |
| REINBECK WATER SUPPLY IA3870073 | GLADBROOK | 1,662 | — | — | Compliant |
| GRANGER MUNI WATER SUPPLY IA2537001 | GRANGER | 1,654 | — | — | Compliant |
| XENIA RWD (MADRID) IA0848701 | BOUTON | 1,635 | — | — | Compliant |
| GOULD HEIGHTS WATER SERVICE COMPANY IA7700853 | ANKENY | 1,635 | — | — | Compliant |
| WOODBINE WATER DEPARTMENT IA4388034 | WOODBINE | 1,625 | — | — | Compliant |
| CORYDON WATER SUPPLY IA9334078 | CORYDON | 1,610 | — | — | Compliant |
| HARTLEY MUNICIPAL WATER DEPARTMENT IA7128036 | HARTLEY | 1,605 | — | — | Compliant |
| GREENFIELD PLAZA WATER SYSTEM IA7700840 | ANKENY | 1,600 | — | — | Compliant |
| ACKLEY MUNICIPAL WATER WORKS IA4201001 | MARSHALLTOWN | 1,599 | — | — | Compliant |
| GUTHRIE CENTER MUNI WATER WORK IA3937016 | GUTHRIE CENTER | 1,593 | — | — | Compliant |
| TRAER MUNICIPAL WATER PLANT IA8681030 | TRAER | 1,583 | — | — | Compliant |
| AKRON, CITY OF IA7509008 | AKRON | 1,558 | — | — | Compliant |
| URBAN BLUFFS - NORTH IA7820701 | AVOCA | 1,558 | — | — | Compliant |
| WALCOTT WATERWORKS IA8285058 | WALCOTT | 1,556 | — | — | Compliant |
| URBANA WATER SUPPLY IA0680041 | URBANA | 1,554 | — | — | Compliant |
| NASHUA WATER SUPPLY IA1967041 | NASHUA | 1,551 | — | — | Compliant |
| SLATER MUNI WATER DEPT IA8580057 | SLATER | 1,548 | — | — | Compliant |
| MONTEZUMA MUNI WATER SUPPLY IA7950097 | MONTEZUMA | 1,545 | — | — | Compliant |
| BEDFORD WATER WORKS IA8709096 | BEDFORD | 1,533 | — | — | Compliant |
| LYON-SIOUX RWS-BIG SIOUX IA6000755 | ROCK RAPIDS | 1,530 | — | — | Compliant |
| WELLMAN MUNICIPAL WATERWORKS IA9276096 | MUSCATINE | 1,524 | — | — | Compliant |
| OAKLAND MUNIC WATER UTILITY IA7856084 | OAKLAND | 1,524 | — | — | Compliant |
| BROOKLYN WATER DEPARTMENT IA7909047 | BROOKLYN | 1,505 | — | — | Compliant |
| HOLSTEIN, CITY OF IA4721054 | HOLSTEIN | 1,501 | — | — | Compliant |
| MONONA MUNICIPAL WATER DEPT IA2264095 | MONONA | 1,471 | — | — | Compliant |
| LENOX WATER SUPPLY IA8748075 | LENOX | 1,470 | — | — | Compliant |
| RATHBUN REGIONAL WATER (MOUNT PLEASANT) IA4453901 | CENTERVILLE | 1,465 | — | — | Compliant |
| IOWA-AMERICAN WATER CO (BLUE GRASS) IA8215021 | DAVENPORT | 1,452 | — | — | Compliant |
| CHEROKEE RWS- MILL CREEK SUBSYSTEM IA1800900 | CHEROKEE | 1,451 | — | — | Compliant |
| EARLHAM MUNICIPAL WATERWORKS IA6115097 | EARLHAM | 1,446 | — | — | Compliant |
| CLARINDA TREATMENT COMPLEX IA7329501 | CLARINDA | 1,439 | — | — | Compliant |
| STATE CENTER MUNI WATER DEPT IA6484093 | STATE CENTER | 1,411 | — | — | Compliant |
| PALO WATER SUPPLY IA5765101 | PALO | 1,407 | — | — | Compliant |
| BLACK HAWK COUNTY RURAL WATER IA0789067 | WATERLOO | 1,400 | — | — | Compliant |
| LOGAN WATER SUPPLY IA4337092 | LOGAN | 1,397 | — | — | Compliant |
| KINGSLEY WATER SUPPLY IA7537032 | KINGSLEY | 1,396 | — | — | Compliant |
| ROLAND WATER SUPPLY IA8570001 | ROLAND | 1,394 | — | — | Compliant |
| MANNING WATER SUPPLY IA1457025 | MANNING | 1,392 | — | — | Compliant |
| SANBORN WATER SUPPLY IA7165025 | SANBORN | 1,392 | — | — | Compliant |
| SIRWA #3 (LEON) IA2718755 | CRESTON | 1,373 | — | — | Compliant |
| NORA SPRINGS WATER SUPPLY IA3423069 | MANLY | 1,369 | — | — | Compliant |
| MAHASKA RURAL WATER (NEW SHARON) IA6264063 | OSKALOOSA | 1,368 | — | — | Compliant |
| LONE TREE MUNI WATER SYSTEM IA5240095 | MUSCATINE | 1,357 | — | — | Compliant |
| WOODWARD WATER SUPPLY IA2576036 | WOODWARD | 1,346 | — | — | Compliant |
| DIKE WATER SUPPLY IA3815042 | DIKE | 1,306 | — | — | Compliant |
| LAURENS WATER SUPPLY IA7614063 | LAURENS | 1,301 | — | — | Compliant |
| LAKE RIDGE, INCORPORATED IA5225315 | GRINNELL | 1,300 | — | — | Compliant |
| DYSART WATER SUPPLY IA8627095 | DYSART | 1,281 | — | — | Compliant |
| SHELL ROCK MUNI WATER SUPP IA1286042 | SHELL ROCK | 1,269 | — | — | Compliant |
| MANLY WATER SUPPLY IA9845024 | MANLY | 1,266 | — | — | Compliant |
| CENTRAL CITY WATER SUPPLY IA5720010 | CENTRAL CITY | 1,264 | — | — | Compliant |
| FAYETTE WATER SUPPLY IA3342041 | FAYETTE | 1,256 | — | — | Compliant |
| CLARKSVILLE WATER SUPPLY IA1228038 | MARSHALLTOWN | 1,254 | — | — | Compliant |
| ALTON MUNICIPAL WATER DEPARTMENT IA8403029 | ALTON | 1,248 | — | — | Compliant |
| AMANA SOCIETY WATER SYSTEM NORTH IA4848001 | AMANA | 1,248 | — | — | Compliant |
| COON RAPIDS MUNICIPAL UTILITIES IA1427070 | COON RAPIDS | 1,242 | — | — | Compliant |
| ANAMOSA STATE PENITENTIARY IA5300947 | ANAMOSA | 1,230 | — | — | Compliant |
| ELKADER MUNI WATER DEPT IA2223011 | ELKADER | 1,219 | — | — | Compliant |
| JEWELL WATER SUPPLY IA4027010 | JEWELL | 1,216 | — | — | Compliant |
| MELCHER-DALLAS WATER SUPPLY IA6300099 | MELCHER DALLAS | 1,213 | — | — | Compliant |
| GILBERT WATER SUPPLY IA8531083 | GILBERT | 1,211 | — | — | Compliant |
| TRIPOLI WATER SUPPLY IA0975032 | TRIPOLI | 1,191 | — | — | Compliant |
| LYON-SIOUX RWS-ROCK RAPIDS IA6000800 | ROCK RAPIDS | 1,187 | — | — | Compliant |
| XENIA RWD (AMES) IA8503704 | BOUTON | 1,183 | — | — | Compliant |
| OSCEOLA RURAL WATER SYSTEM-NORTH OKOBOJI IA3090701 | MAY CITY | 1,177 | — | — | Compliant |
| BUFFALO WATER SUPPLY IA8218050 | BUFFALO | 1,176 | — | — | Compliant |
| XENIA RWD (LAKE MILLS) IA9545701 | BOUTON | 1,175 | — | — | Compliant |
| CAMP DODGE WATER SUPPLY IA7700901 | JOHNSTON | 1,169 | — | — | Compliant |
| LAKE PARK MUNICIPAL UTILITIES IA3045046 | LAKE PARK | 1,167 | — | — | Compliant |
| SPRINGVILLE WATER SUPPLY IA5782087 | SPRINGVILLE | 1,164 | — | — | Compliant |
| ST ANSGAR WATER SUPPLY IA6673016 | ST. ANSGAR | 1,161 | — | — | Compliant |
| STRAWBERRY POINT WATER SUPPLY IA2279003 | STRAWBERRY POINT | 1,155 | — | — | Compliant |
| POLK COUNTY RURAL WATER DIST #1 IA7727701 | DES MOINES | 1,152 | — | — | Compliant |
| PANORA WATER WORKS IA3971026 | PANORA | 1,142 | — | — | Compliant |
| GLIDDEN WATER SUPPLY IA1438091 | GLIDDEN | 1,140 | — | — | Compliant |
| LAKE VIEW WATER SUPPLY IA8127048 | LAKE VIEW | 1,133 | — | — | Compliant |
| VILLISCA MUNICIPAL WATER DEPT IA6985051 | VILLISCA | 1,132 | — | — | Compliant |
| SHEFFIELD WATER SUPPLY IA3570037 | SHEFFIELD | 1,130 | — | — | Compliant |
| GLENWOOD RESOURCE CENTER IA6525901 | GLENWOOD | 1,130 | — | — | Compliant |
| APLINGTON WATER SUPPLY IA1207061 | APLINGTON | 1,126 | — | — | Compliant |
| CALMAR WATER SUPPLY IA9615064 | CALMAR | 1,125 | — | — | Compliant |
| MAPLETON MUNICIPAL WATER PLANT IA6727028 | MAPLETON | 1,124 | — | — | Compliant |
| ARNOLDS PARK WATER DEPARTMENT IA3003067 | ARNOLDS PARK | 1,113 | — | — | Compliant |
| FAIRBANK WATER SUPPLY IA1025031 | FAIRBANK | 1,111 | — | — | Compliant |
| W CENTRAL RWA- AUDUBON SUBSYS IA1457701 | MANNING | 1,100 | — | — | Compliant |
| CONRAD WATER SUPPLY IA3809067 | CONRAD | 1,098 | — | — | Compliant |
| THE AMANAS (MIDDLE/EAST/MAIN/GOLF CLUB) IA4848901 | AMANA | 1,091 | — | — | Compliant |
| GEORGE WATER SUPPLY IA6028081 | GEORGE | 1,082 | — | — | Compliant |
| MARCUS WATER SUPPLY IA1838032 | MARCUS | 1,079 | — | — | Compliant |
| SIDNEY WATER SUPPLY IA3661048 | SIDNEY | 1,077 | — | — | Compliant |
| VAN METER MUNICIPAL WATER WORK IA2570046 | VAN METER | 1,074 | — | — | Compliant |
| ROCKWELL WATER SUPPLY IA1773097 | ROCKWELL | 1,071 | — | — | Compliant |
| ELK RUN HEIGHTS WATER SUPPLY IA0721014 | ELK RUN HEIGHTS | 1,069 | — | — | Compliant |
| NORTH ENGLISH WATER DEPARTMENT IA4858070 | NORTH ENGLISH | 1,065 | — | — | Compliant |
| RIVERSIDE WATER SUPPLY IA9260090 | RIVERSIDE | 1,060 | — | — | Compliant |
| TREYNOR WATER DEPARTMENT IA7866031 | UNDERWOOD | 1,049 | — | — | Compliant |
| MALVERN WATER SUPPLY IA6545020 | MALVERN | 1,046 | — | — | Compliant |
| SLOAN WATER SUPPLY IA9780059 | SLOAN | 1,042 | — | — | Compliant |
| CLARENCE WATER SUPPLY IA1630028 | MECHANICSVILLE | 1,039 | — | — | Compliant |
| DUNLAP WATER SUPPLY IA4316087 | DUNLAP | 1,035 | — | — | Compliant |
| WINFIELD MUNI WATER DEPT IA4493028 | WINFIELD | 1,035 | — | — | Compliant |
| JANESVILLE WATER SUPPLY IA0932001 | JANESVILLE | 1,034 | — | — | Compliant |
| AUTUMN RIDGE ESTATES MHP IA7709601 | GRINNELL | 1,032 | — | — | Compliant |
| EDDYVILLE MUNI WATER DEPT IA9049001 | EDDYVILLE | 1,029 | — | — | Compliant |
| MECHANICSVILLE WATER DEPT IA1667076 | MECHANICSVILLE | 1,020 | — | — | Compliant |
| TABOR WATER SUPPLY IA3667012 | TABOR | 1,014 | — | — | Compliant |
| GRISWOLD WATER SUPPLY IA1528010 | GRISWOLD | 1,008 | — | — | Compliant |
| EAGLE RIDGE IA5751602 | MARION | 1,005 | — | — | Compliant |
| BAXTER WATER SUPPLY IA5003091 | BAXTER | 1,002 | — | — | Compliant |
| COUNTRY TERRACE MOBILE HOME PARK IA0700675 | CEDAR FALLS | 1,000 | — | — | Compliant |
| PAULLINA MUNICIPAL WATER SUPPLY IA7139032 | PAULLINA | 996 | — | — | Compliant |
| ODEBOLT WATER SUPPLY IA8144087 | ODEBOLT | 994 | — | — | Compliant |
| YES FIVE SEASONS CEDAR LLC IA5715602 | NEWTON | 994 | — | — | Compliant |
| GREENE MUNI WATER SUPPLY IA1253006 | GREENE | 994 | — | — | Compliant |
| LAWTON WATER SUPPLY IA9743065 | LAWTON | 988 | — | — | Compliant |
| FREDERICKSBURG WATER SUPPLY IA1940068 | FREDERICKSBURG | 987 | — | — | Compliant |
| LANSING WATER SUPPLY IA0345054 | LANSING | 983 | — | — | Compliant |
| ANITA MUNICIPAL UTILITIES IA1503053 | ANITA | 972 | — | — | Compliant |
| AURELIA WATER SUPPLY IA1803079 | AURELIA | 968 | — | — | Compliant |
| ALLISON WATER SUPPLY IA1203026 | ALLISON | 966 | — | — | Compliant |
| WAYLAND WATER SUPPLY IA4490091 | WAYLAND | 966 | — | — | Compliant |
| KEOSAUQUA WATER WORKS IA8938026 | KEOSAUQUA | 961 | — | — | Compliant |
| SHELLSBURG WATER SUPPLY IA0670043 | SHELLSBURG | 961 | — | — | Compliant |
| DE SOTO WATER SUPPLY IA2529035 | ADEL | 960 | — | — | Compliant |
| GOWRIE MUNI UTILITIES WATER DEPT IA9436095 | GOWRIE | 954 | — | — | Compliant |
| PRESTON MUNI WATER SUPPLY IA4965057 | PRESTON | 949 | — | — | Compliant |
| EDGEWOOD WATER SUPPLY IA2220002 | EDGEWOOD | 939 | — | — | Compliant |
| HINTON WATER SUPPLY IA7528051 | HINTON | 935 | — | — | Compliant |
| ALPINE PARK IA3126605 | EPWORTH | 932 | — | — | Compliant |
| SIOUX RAPIDS WATER DEPARTMENT IA1175056 | SIOUX RAPIDS | 932 | — | — | Compliant |
| INWOOD WATER SUPPLY IA6040076 | INWOOD | 928 | — | — | Compliant |
| ELDON WATER SUPPLY IA9053004 | WASHINGTON | 927 | — | — | Compliant |
| LARCHWOOD WATER SUPPLY IA6050059 | LARCHWOOD | 926 | — | — | Compliant |
| DANVILLE WATER SUPPLY IA2915000 | MUSCATINE | 923 | — | — | Compliant |
| PRINCETON WATER SUPPLY IA8273061 | PRINCETON | 923 | — | — | Compliant |
| WEST POINT MUNI WATER SYSTEM IA5691012 | WEST POINT | 921 | — | — | Compliant |
| ARMSTRONG WATER SUPPLY IA3203066 | ARMSTRONG | 918 | — | — | Compliant |
| AFTON WATER SYSTEM IA8803005 | AFTON | 917 | — | — | Compliant |
| MODERN MANOR, INC IA5225601 | GRINNELL | 915 | — | — | Compliant |
| LE GRAND WATER WORKS IA6457070 | LEGRAND | 910 | — | — | Compliant |
| NEOLA LIGHT & WATER IA7853043 | ADAIR | 906 | — | — | Compliant |
| NEWELL WATER TREATMENT PLANT IA1155049 | NEWELL | 906 | — | — | Compliant |
| PRIMGHAR MUNICIPAL WATER SUPPLY IA7155059 | PRIMGHAR | 902 | — | — | Compliant |
| SULLY MUNI WATER WORKS IA5076005 | SULLY | 900 | — | — | Compliant |
| MELCHER WATER SUPPLY IA6352064 | MELCHER-DALLAS | 900 | — | — | Compliant |
| KEOTA WATER DEPT IA5440028 | MUSCATINE | 897 | — | — | Compliant |
| GRAETTINGER MUNICIPAL WATER SUPPLY IA7445096 | GRAETTINGER | 897 | — | — | Compliant |
| HAMBURG WATER SUPPLY IA3621023 | HAMBURG | 890 | — | — | Compliant |
| DONNELLSON MUNI WATER WORKS IA5620046 | DONNELLSON | 885 | — | — | Compliant |
| ELKHART WATER SUPPLY IA7730012 | ANKENY | 882 | — | — | Compliant |
| NEWHALL WATER SUPPLY IA0653050 | VAN HORNE | 881 | — | — | Compliant |
| VICTOR MUNICIPAL WATER DEPT IA4875050 | BELLE PLAINE | 875 | — | — | Compliant |
| HILLS WATER SUPPLY IA5221001 | HILLS | 863 | — | — | Compliant |
| HUBBARD WATER SUPPLY IA4254061 | HUBBARD | 860 | — | — | Compliant |
| MAXWELL WATER DEPARTMENT IA8557058 | MAXWELL | 859 | — | — | Compliant |
| BUFFALO CENTER MUNI WATER DEPT IA9506052 | WHITTEMORE | 857 | — | — | Compliant |
| COLO WATER SUPPLY IA8520061 | COLO | 853 | — | — | Compliant |
| MARION VILLAGE IA5751601 | NEWTON | 850 | — | — | Compliant |
| READLYN WATER SUPPLY IA0965073 | READLYN | 845 | — | — | Compliant |
| DUNKERTON MUNI WATER SUPPLY IA0717084 | DUNKERTON | 842 | — | — | Compliant |
| IOWA PREMIUM LLC IA8670101 | TAMA | 841 | — | — | Compliant |
| WINTHROP WATER SUPPLY IA1093031 | WINTHROP | 840 | — | — | Compliant |
| LONG GROVE MUNI WATER SUPPLY IA8251096 | LONG GROVE | 838 | — | — | Compliant |
| CAMBRIDGE WATER SUPPLY IA8509069 | CAMBRIDGE | 832 | — | — | Compliant |
| MIDWEST COUNTRY ESTATES IA2573301 | NEWTON | 820 | — | — | Compliant |
| RICEVILLE WATER SUPPLY IA4558001 | RICEVILLE | 816 | — | — | Compliant |
| SWISHER W.S. IA5285011 | SWISHER | 813 | — | — | Compliant |
| ADAIR MUNICIPAL WATER SUPPLY IA0105002 | ADAIR | 809 | — | — | Compliant |
| LOWDEN WATER SUPPLY IA1656001 | LOWDEN | 807 | — | — | Compliant |
| SCHLESWIG MUNIC WATER SUPPLY IA2446029 | SCHLESWIG | 803 | — | — | Compliant |
| OSSIAN WATER SUPPLY IA9677007 | OSSIAN | 802 | — | — | Compliant |
| GLADBROOK WATER SUPPLY IA8640089 | GLADBROOK | 799 | — | — | Compliant |
| GILBERTVILLE WATER WORKS IA0733084 | GILBERTVILLE | 796 | — | — | Compliant |
| MILO PUBLIC WATER SUPPLY IA9155083 | MILO | 788 | — | — | Compliant |
| RAYMOND WATER SYSTEM IA0768001 | RAYMOND | 788 | — | — | Compliant |
| WALL LAKE WATER SUPPLY IA8166061 | WALL LAKE | 780 | — | — | Compliant |
| VAN HORNE WATER WORKS IA0685045 | VAN HORNE | 779 | — | — | Compliant |
| RUTHVEN WATER SUPPLY IA7465010 | RUTHVEN | 779 | — | — | Compliant |
| CRESCENT WATER SUPPLY IA7822086 | MARSHALLTOWN | 778 | — | — | Compliant |
| OKOBOJI WATER SUPPLY IA3060091 | OKOBOJI | 776 | — | — | Compliant |
| FREEPORT WATER DISTRICT IA9630001 | DECORAH | 775 | — | — | Compliant |
| WHEATLAND CITY WATER SUPPLY IA2394017 | WHEATLAND | 775 | — | — | Compliant |
| WEST BEND WATER DEPARTMENT IA7470099 | WEST BEND | 772 | — | — | Compliant |
| DAYTON MUNICIPAL WATER SUPPLY IA9425011 | FORT DODGE | 772 | — | — | Compliant |
| DAKOTA CITY WATER SUPPLY IA4622095 | DAKOTA CITY | 769 | — | — | Compliant |
| WALNUT MUNICIPAL UTILITIES IA7872062 | WALNUT | 768 | — | — | Compliant |
| CARSON WATER SUPPLY IA7809078 | CARSON | 766 | — | — | Compliant |
| CORRECTIONVILLE WATER SUPPLY IA9721076 | CORRECTIONVILLE | 766 | — | — | Compliant |
| MELBOURNE WATER SUPPLY IA6471063 | MELBOURNE | 765 | — | — | Compliant |
| EXIRA WATER DEPT IA0520030 | EXIRA | 764 | — | — | Compliant |
| ALDEN WATER SUPPLY IA4213013 | ALDEN | 763 | — | — | Compliant |
| GARNAVILLO WATER SUPPLY IA2234074 | GARNAVILLO | 763 | — | — | Compliant |
| ROCKFORD WATER SUPPLY IA3430091 | ROCKFORD | 762 | — | — | Compliant |
| WESTERN HILLS (MOBILE) ESTATES IA5208600 | GRINNELL | 760 | — | — | Compliant |
| HARTFORD WATER WORKS IA9128035 | HARTFORD | 759 | — | — | Compliant |
| MANILLA MUNI SERVICE DEPT IA2436023 | MANILLA | 758 | — | — | Compliant |
| MORNING SUN WATER DEPARTMENT IA5857011 | MORNING SUN | 752 | — | — | Compliant |
| MCGREGOR WATER DEPT IA2258012 | MCGREGOR | 747 | — | — | Compliant |
| REDFIELD WATER WORKS IA2564074 | REDFIELD | 746 | — | — | Compliant |
| MAHASKA RURAL WATER (FREMONT) IA6234070 | OSKALOOSA | 743 | — | — | Compliant |
| BLAIRSTOWN WATER SUPPLY IA0607013 | BLAIRSTOWN | 738 | — | — | Compliant |
| MONTROSE WATER WORKS IA5650003 | MONTROSE | 738 | — | — | Compliant |
| SCHALLER WATER SUPPLY IA8156028 | SCHALLER | 729 | — | — | Compliant |
| HEDRICK WATER SUPPLY IA5432042 | HEDRICK | 728 | — | — | Compliant |
| WHITING WATER SUPPLY IA6769018 | WHITING | 727 | — | — | Compliant |
| SHELBY WATER SUPPLY IA8369038 | SHELBY | 727 | — | — | Compliant |
| GRAND JCT MUNICIPAL WATER DEPT IA3730098 | GRAND JUNCTION | 725 | — | — | Compliant |
| EARLVILLE MUNI WATER SUPPLY IA2825099 | EARLVILLE | 724 | — | — | Compliant |
| ESSEX WATER SUPPLY IA7349023 | ESSEX | 722 | — | — | Compliant |
| OXFORD WATER SUPPLY IA5260017 | OXFORD | 722 | — | — | Compliant |
| WELLSBURG WATER SUPPLY IA3890097 | WELLSBURG | 721 | — | — | Compliant |
| HOSPERS MUNICIPAL WATER DEPT IA8439058 | MARSHALLTOWN | 718 | — | — | Compliant |
| MERRILL MUNICIPAL WATER SUPPLY IA7548072 | MERRILL | 717 | — | — | Compliant |
| VENTURA WATER WORKS IA1785032 | VENTURA | 716 | — | — | Compliant |
| HAZLETON WATER SUPPLY IA1031044 | JESUP | 713 | — | — | Compliant |
| TIMBERLINE ESTATES, LTD. IA2900626 | WEST BURLINGTON | 712 | — | — | Compliant |
| BANCROFT WATER SUPPLY IA5507085 | BANCROFT | 711 | — | — | Compliant |
| YES REGENCY MANOR LLC IA7727602 | NEWTON | 710 | — | — | Compliant |
| STRATFORD MUNI WATER DEPT IA4051002 | STRATFORD | 707 | — | — | Compliant |
| BOYDEN MUNICIPAL WATER SUPPLY IA8409037 | BOYDEN | 701 | — | — | Compliant |
| COGGON WATER DEPARTMENT IA5722053 | COGGON | 701 | — | — | Compliant |
| LAKESIDE WATER SUPPLY IA1145047 | LAKESIDE | 700 | — | — | Compliant |
| WOODWARD RESOURCE CENTER IA0800923 | WOODWARD | 700 | — | — | Compliant |
| BATTLE CREEK WATER SUPPLY IA4709090 | BATTLE CREEK | 700 | — | — | Compliant |
| SAINT CHARLES WATER SUPPLY IA6161031 | SAINT CHARLES | 694 | — | — | Compliant |
| DEXTER WATER SUPPLY IA2533038 | DEXTER | 693 | — | — | Compliant |
| WALKER WATER WORKS IA5792059 | WALKER | 688 | — | — | Compliant |
| UNDERWOOD WATER SUPPLY IA7869037 | UNDERWOOD | 688 | — | — | Compliant |
| ELGIN MUNICIPAL WATER SUPPLY IA3338010 | ELGIN | 685 | — | — | Compliant |
| MURRAY WATER WORKS IA2032023 | MURRAY | 684 | — | — | Compliant |
| ALBERT CITY MUNI WATER SUPPLY IA1103009 | STORM LAKE | 677 | — | — | Compliant |
| ALBURNETT WATER SUPPLY IA5704012 | ALBURNETT | 675 | — | — | Compliant |
| POMEROY WATER SUPPLY IA1363051 | POMEROY | 671 | — | — | Compliant |
| FONTANELLE WATER WORKS IA0135046 | FONTANELLE | 670 | — | — | Compliant |
| YES WESTERN VILLAGE LLC IA7785601 | NEWTON | 670 | — | — | Compliant |
| SAC & FOX COMMUNITY WATER SUPPLY IA8600914 | TAMA | 669 | — | — | Compliant |
| KANAWHA WATER SUPPLY IA4150014 | KANAWHA | 658 | — | — | Compliant |
| RIVERDALE PUBLIC WATER SUPPLY IA8278089 | RIVERDALE | 653 | — | — | Compliant |
| OLIN WATER SUPPLY IA5355094 | WYOMING | 651 | — | — | Compliant |
| BENTON COMMERCE VILLAGE IA0680201 | URBANA | 650 | — | — | Compliant |
| ALTO MOBILE HOME PARK IA7800600 | COUNCIL BLUFFS | 650 | — | — | Compliant |
| RURAL WATER SYSTEM #1 (PLANT 1) IA8400711 | HOSPERS | 650 | — | — | Compliant |
| SOUTHRIDGE ESTATE IA7727603 | NEWTON | 648 | — | — | Compliant |
| WHAT CHEER WATER SUPPLY IA5493016 | SIGOURNEY | 646 | — | — | Compliant |
| MORAVIA PUBLIC WATER SUPPLY IA0467008 | MORAVIA | 637 | — | — | Compliant |
| STANWOOD WATER SUPPLY IA1681092 | STANWOOD | 637 | — | — | Compliant |
| SEYMOUR MUNICIPAL UTILITY WATER DEPT IA9368035 | SEYMOUR | 637 | — | — | Compliant |
| FONDA WATER SUPPLY IA7603045 | FONDA | 636 | — | — | Compliant |
| DUMONT WATER SUPPLY IA1240081 | MARSHALLTOWN | 635 | — | — | Compliant |
| GOLDFIELD WATER SUPPLY IA9937092 | GOLDFIELD | 634 | — | — | Compliant |
| ELK HORN MUNI WATER WORKS IA8325013 | ELK HORN | 631 | — | — | Compliant |
| SUTHERLAND WATER SUPPLY IA7177007 | SUTHERLAND | 629 | — | — | Compliant |
| HOPKINTON MUNICIPAL UTILITIES IA2835056 | HOPKINTON | 622 | — | — | Compliant |
| AGENCY WATER WORKS IA9003006 | AGENCY | 620 | — | — | Compliant |
| DOON WATER SUPPLY IA6015047 | DOON | 619 | — | — | Compliant |
| KELLOGG WATER SUPPLY IA5038017 | KELLOGG | 617 | — | — | Compliant |
| GRAND MOUND WATER SUPPLY IA2341099 | GRAND MOUND | 615 | — | — | Compliant |
| ORLEANS WATER SUPPLY IA3065009 | SPIRIT LAKE | 608 | — | — | Compliant |
| MOULTON WATER DEPARTMENT IA0472012 | MOULTON | 607 | — | — | Compliant |
| LYON-SIOUX RWS-BOYDEN IA6000744 | ROCK RAPIDS | 605 | — | — | Compliant |
| FARMINGTON WATER SUPPLY IA8930038 | FARMINGTON | 601 | — | — | Compliant |
| LAKE CANYADA MOBILE HOME COURT IA8200685 | DAVENPORT | 600 | — | — | Compliant |
| CEDAR TERRACE MHC IA5700600 | NEWTON | 600 | — | — | Compliant |
| BRIGHTON MUNICIPAL WATER SUPPLY IA9209043 | BRIGHTON | 600 | — | — | Compliant |
| KEYSTONE WATER SUPPLY IA0640030 | KEYSTONE | 599 | — | — | Compliant |
| MINDEN WATER SUPPLY IA7849086 | NEOLA | 598 | — | — | Compliant |
| IRETON WATER SUPPLY IA8447098 | IRETON | 590 | — | — | Compliant |
| EARLY MUNICIPAL WATER SUPPLY IA8114000 | EARLY | 587 | — | — | Compliant |
| CLERMONT WATER SUPPLY IA3317047 | CLERMONT | 586 | — | — | Compliant |
| SWEA CITY WATER SUPPLY IA5584009 | SWEA CITY | 584 | — | — | Compliant |
| GILMAN WATER SUPPLY IA6436087 | NEWTON | 582 | — | — | Compliant |
| WAPELLO RURAL WATER-SOUTH IA9000701 | OTTUMWA | 578 | — | — | Compliant |
| EVERLY WATER SUPPLY IA2115029 | EVERLY | 575 | — | — | Compliant |
| QUASQUETON MUNICIPAL WATER SYSTEM IA1074001 | QUASQUETON | 574 | — | — | Compliant |
| NEW HARTFORD WATER SUPPLY IA1271058 | MARSHALLTOWN | 570 | — | — | Compliant |
| RADCLIFFE MUNICIPAL WATER IA4283067 | RADCLIFFE | 561 | — | — | Compliant |
| BADGER WATER SUPPLY IA9405082 | BADGER | 561 | — | — | Compliant |
| VAL VISTA ESTATES IA7727607 | DES MOINES | 553 | — | — | Compliant |
| DENMARK WATER COMPANY IA5617029 | DENMARK | 550 | — | — | Compliant |
| ANTHON MUNICIPAL WATER SYSTEM IA9704060 | ANTHON | 545 | — | — | Compliant |
| RICHLAND WATER SUPPLY IA5470083 | BRIGHTON | 542 | — | — | Compliant |
| DELMAR WATER SUPPLY IA2328024 | MAQUOKETA | 542 | — | — | Compliant |
| ZEARING WATER DEPARTMENT IA8590041 | ZEARING | 528 | — | — | Compliant |
| SUNSET VILLAGE IA6469601 | NEWTON | 528 | — | — | Compliant |
| DOWS WATER SUPPLY IA9921050 | DOWS | 526 | — | — | Compliant |
| ARCADIA WATER SUPPLY IA1403062 | ARCADIA | 525 | — | — | Compliant |
| TRURO WATERWORKS IA6167036 | TRURO | 525 | — | — | Compliant |
| WYOMING WATER SYSTEM IA5396039 | WYOMING | 523 | — | — | Compliant |
| WHITTEMORE MUNI WATER SUPPLY IA5595020 | WHITTEMORE | 522 | — | — | Compliant |
| CHARTER OAK WATER SUPPLY IA2417018 | CHARTER OAK | 522 | — | — | Compliant |
| RIPLEYS MHC IA LLC IA7000600 | LECLAIRE | 520 | — | — | Compliant |
| ELLSWORTH PUBLIC WATER SUPPLY IA4009016 | ELLSWORTH | 514 | — | — | Compliant |
| SCRANTON WATER SYSTEM IA3759031 | SCRANTON | 511 | — | — | Compliant |
| TITONKA WATER SUPPLY IA5588026 | TITONKA | 511 | — | — | Compliant |
| AINSWORTH WATER WORKS IA9203007 | AINSWORTH | 511 | — | — | Compliant |
| ROLFE WATER SUPPLY IA7639002 | ROLFE | 509 | — | — | Compliant |
| PACIFIC JUNCTION WATER SUPPLY IA6562022 | PACIFIC JUNCTION | 507 | — | — | Compliant |
| SABULA WATER SUPPLY IA4975014 | SABULA | 506 | — | — | Compliant |
| COLLINS WATER SUPPLY IA8515060 | COLLINS | 505 | — | — | Compliant |
| ELMA WATER SUPPLY IA4525017 | ELMA | 505 | — | — | Compliant |
| BEACON WATER SUPPLY IA6203093 | OSKALOOSA | 504 | — | — | Compliant |
| BREDA WATER SUPPLY IA1409041 | BREDA | 502 | — | — | Compliant |
| MALMORE ACRES WATER SERVICE IA7820602 | COUNCIL BLUFFS | 500 | — | — | Compliant |
| CLAY REGIONAL WATER - SUPERIOR SUBSYSTEM IA3218701 | SPENCER | 500 | — | — | Compliant |
| STARLIGHT MOBILE HOME PARK IA5200600 | IOWA CITY | 500 | — | — | Compliant |
| MOUNT PLEASANT TREATMENT CENTER IA4400920 | MOUNT PLEASANT | 500 | — | — | Compliant |
| SOUTHERN RURAL WATER ASSOC IA8000301 | ELLSTON | 500 | — | — | Compliant |
| BERWICK WATER DISTRICT IA7714707 | BERWICK | 500 | — | — | Compliant |
| THOMPSON WATER WORKS IA9585017 | THOMPSON | 499 | — | — | Compliant |
| NEW VIRGINIA WATER SUPPLY IA9159067 | NEWTON | 498 | — | — | Compliant |
| FARRAGUT WATER SUPPLY IA3615040 | FARRAGUT | 490 | — | — | Compliant |
| IRUA - PERSHING UTILITIES IA6300800 | NEWTON | 488 | — | — | Compliant |
| GILMORE CITY WATERWORKS IA7607088 | GILMORE CITY | 487 | — | — | Compliant |
| UNIVERSITY PARK WATER SUPPLY IA6290040 | OSKALOOSA | 487 | — | — | Compliant |
| GARWIN WATER SUPPLY IA8637079 | GARWIN | 481 | — | — | Compliant |
| RUSSELL WATER SUPPLY IA5939009 | RUSSELL | 477 | — | — | Compliant |
| LATIMER WATER SUPPLY IA3554061 | HAMPTON | 477 | — | — | Compliant |
| MAYNARD WATER SUPPLY IA3350059 | MAYNARD | 476 | — | — | Compliant |
| LIME SPRINGS WATER SUPPLY IA4535081 | RICEVILLE | 473 | — | — | Compliant |
| LOVILIA MUNICIPAL WATER DEPARTMENT IA6858000 | LOVILIA | 472 | — | — | Compliant |
| JEFFERSON COUNTY RURAL WATER DISTRICT IA5131705 | FAIRFIELD | 468 | — | — | Compliant |
| DOW CITY WATER WORKS IA2427049 | DOW CITY | 467 | — | — | Compliant |
| NORWAY CITY WATER SUPPLY IA0656081 | NORWAY | 466 | — | — | Compliant |
| STACYVILLE WATER SUPPLY IA6677089 | STACYVILLE | 465 | — | — | Compliant |
| HUMESTON WATER PLANT IA9348065 | HUMESTON | 465 | — | — | Compliant |
| COLONIAL/GM/RC IA3102301 | DUBUQUE | 462 | — | — | Compliant |
| RUNNELLS WATER SUPPLY IA7774008 | DES MOINES | 457 | — | — | Compliant |
| ASHTON MUNICIPAL WATER DEPARTMENT IA7209069 | ASHTON | 456 | — | — | Compliant |
| EWING TRACE MHC IA7727604 | NEWTON | 455 | — | — | Compliant |
| TABLE MOUND PARK IA3100600 | CASCASDE | 455 | — | — | Compliant |
| AMANA WATER SUPPLY IA4802033 | AMANA | 452 | — | — | Compliant |
| DALLAS MUNICIPAL WATER SUPPLY IA6322096 | MELCHER-DALLAS | 451 | — | — | Compliant |
| ALBION WATER DEPARTMENT IA6403011 | ALBION | 448 | — | — | Compliant |
| ROYAL MUNICIPAL WATER UTILITIES IA2166006 | SPENCER | 446 | — | — | Compliant |
| KLEMME WATER WORKS IA4155035 | KLEMME | 441 | — | — | Compliant |
| LITTLE ROCK WATER SUPPLY IA6060006 | LITTLE ROCK | 441 | — | — | Compliant |
| OTLEY PUBLIC UTILITIES INC IA6361001 | NEWTON | 440 | — | — | Compliant |
| OCHEYEDAN WATER WORKS IA7239086 | OCHEYEDAN | 439 | — | — | Compliant |
| ALLEMAN WATER SUPPLY IA7705022 | ALLEMAN | 439 | — | — | Compliant |
| HAWKEYE WATER SUPPLY IA3346037 | HAWKEYE | 438 | — | — | Compliant |
| GRANDVIEW MUNI WATER DEPT IA5842000 | GRANDVIEW | 437 | — | — | Compliant |
| GALVA WATER SUPPLY IA4715072 | GALVA | 435 | — | — | Compliant |
| LOST NATION WATER SUPPLY IA2346047 | LOST NATION | 434 | — | — | Compliant |
| NEW ALBIN WATER SUPPLY IA0370047 | NEW ALBIN | 432 | — | — | Compliant |
| OTHO WATER SUPPLY IA9464008 | FORT DODGE | 431 | — | — | Compliant |
| BATAVIA WATER WORKS IA5107089 | BATAVIA | 430 | — | — | Compliant |
| ALLERTON WATER WORKS IA9303024 | ALLERTON | 430 | — | — | Compliant |
| LAMONT WATER SUPPLY IA1051051 | LAMONT | 429 | — | — | Compliant |
| MARQUETTE WATER SUPPLY IA2256041 | MARQUETTE | 429 | — | — | Compliant |
| BUSSEY WATER SUPPLY IA6309061 | OSKALOOSA | 427 | — | — | Compliant |
| LORIMOR WATER SUPPLY IA8834098 | LORIMOR | 427 | — | — | Compliant |
| PALACE PARK MHC IA9433601 | MADRID | 426 | — | — | Compliant |
| OXFORD JUNCTION WATER SUPPLY IA5361020 | OXFORD JUNCTION | 424 | — | — | Compliant |
| MARTENSDALE WATER SUPPLY IA9147047 | MARTENSDALE | 421 | — | — | Compliant |
| DELHI WATER SUPPLY IA2817020 | DELHI | 420 | — | — | Compliant |
| ARLINGTON WATER SUPPLY IA3307065 | ARLINGTON | 419 | — | — | Compliant |
| BURT WATER SUPPLY IA5510060 | BURT | 418 | — | — | Compliant |
| CLOVER RIDGE SUBDIVISION IA0690301 | WALFORD | 413 | — | — | Compliant |
| EMERSON WATER DEPARTMENT IA6520019 | EMERSON | 412 | — | — | Compliant |
| WAHPETON WATER SUPPLY IA3087057 | MILFORD | 408 | — | — | Compliant |
| MILES WATER DEPARTMENT IA4953078 | MILES | 408 | — | — | Compliant |
| LAWLER WATER SUPPLY IA1957064 | LAWLER | 406 | — | — | Compliant |
| BAYARD WATER SUPPLY IA3907092 | ADAIR | 405 | — | — | Compliant |
| CHARLOTTE WATER WORKS IA2324016 | MAQUOKETA | 401 | — | — | Compliant |
| THORNTON WATER SUPPLY IA1781019 | BELMOND | 400 | — | — | Compliant |
| RADIO CITY MHP IA7727601 | DES MOINES | 400 | — | — | Compliant |
| WEST BRANCH MHP IA1600682 | OXFORD | 400 | — | — | Compliant |
| OAKWOOD HEIGHTS MOBILE HOME PA IA7700602 | ANKENY | 400 | — | — | Compliant |
| UNION WATER SUPPLY IA4291038 | NEWTON | 399 | — | — | Compliant |
| EARLING WATER SUPPLY IA8320098 | EARLING | 397 | — | — | Compliant |
| SALEM WATER SUPPLY IA4478023 | SALEM | 396 | — | — | Compliant |
| LEHIGH WATER SUPPLY IA9453071 | FORT DODGE | 395 | — | — | Compliant |
| PLAINFIELD WATER SUPPLY IA0960045 | PLAINFIELD | 393 | — | — | Compliant |
| STOVER HEIGHTS MHC IA7727605 | MADRID | 393 | — | — | Compliant |
| SOUTHWEST POLK WATER SERVICE, INC. IA7700802 | ANKENY | 393 | — | — | Compliant |
| COLUMBUS CITY PUBLIC WATER SUPPLY IA5809063 | OLDS | 392 | — | — | Compliant |
| WESLEY WATER SUPPLY IA5592098 | WESLEY | 390 | — | — | Compliant |
| BONAPARTE WATER SUPPLY IA8914031 | WASHINGINTON | 390 | — | — | Compliant |
| RIVER HEIGHTS PROPERTY OWNERS ASSOC. IA5200318 | OXFORD | 390 | — | — | Compliant |
| CEDAR FALLS MOBILE HOME VILLAGE IA0709600 | WAVERLY | 388 | — | — | Compliant |
| CASEY WATER SUPPLY IA3914081 | CASEY | 387 | — | — | Compliant |
| COLESBURG WATER SUPPLY IA2809055 | COLESBURG | 386 | — | — | Compliant |
| NEW MARKET WATER SUPPLY IA8758061 | NEW MARKET | 385 | — | — | Compliant |
| DUNCOMBE WATER SUPPLY IA9427082 | DUNCOMBE | 384 | — | — | Compliant |
| LIVERMORE WATER SUPPLY IA4647090 | LIVERMORE | 383 | — | — | Compliant |
| VAIL WATER SUPPLY IA2452044 | VAIL | 383 | — | — | Compliant |
| WORTHINGTON WATER SUPPLY IA3189001 | WORTHINGTON | 382 | — | — | Compliant |
| MARSHALLTOWN ESTATES IA6400628 | MARSHALLTOWN | 382 | — | — | Compliant |
| NEW VIENNA WATER SUPPLY IA3165014 | NEW VIENNA | 382 | — | — | Compliant |
| LOHRVILLE WATER SUPPLY IA1389001 | NEWELL | 381 | — | — | Compliant |
| ANDREW WATER SUPPLY IA4903050 | MARSHALLTOWN | 380 | — | — | Compliant |
| LYNNVILLE WATER DEPT IA5047008 | LYNNVILLE | 380 | — | — | Compliant |
| MILTON WATER SUPPLY IA8954084 | MILTON | 380 | — | — | Compliant |
| FARNHAMVILLE WATER SUPPLY IA1320039 | GILMORE CITY | 379 | — | — | Compliant |
| PLYMOUTH WATER SUPPLY IA1759048 | PLYMOUTH | 378 | — | — | Compliant |
| MARK TWAIN MEADOWS HOMEOWNERS IA7048301 | MUSCATINE | 375 | — | — | Compliant |
| HICKORY HOLLOW WATER SERVICE, INC. IA7709396 | ANKENY | 375 | — | — | Compliant |
| CHURDAN WATER SUPPLY IA3709001 | CHURDAN | 375 | — | — | Compliant |
| SPILLVILLE WATER SUPPLY IA9686077 | SPILLVILLE | 371 | — | — | Compliant |
| CLEARFIELD MUNICIPAL WATER IA8012001 | CLEARFIELD | 371 | — | — | Compliant |
| CALLENDER WATER SUPPLY IA9417063 | FORT DODGE | 371 | — | — | Compliant |
| ORIENT MUNICIPAL WATER SUPPLY IA0160099 | ORIENT | 368 | — | — | Compliant |
| BIRMINGHAM WATER SUPPLY IA8909011 | BIRMINGHAM | 367 | — | — | Compliant |
| STATE TRAINING SCHOOL IA4236002 | ELDORA | 365 | — | — | Compliant |
| RINGSTED WATER SUPPLY IA3275087 | RINGSTED | 365 | — | — | Compliant |
| MENLO WATER SUPPLY IA3956070 | MENLO | 365 | — | — | Compliant |
| MASSENA WATER SUPPLY IA1558055 | MASSENA | 364 | — | — | Compliant |
| STANHOPE WATER DEPARTMENT IA4045090 | STANHOPE | 364 | — | — | Compliant |
| PERSIA MUNICIPAL WATER SUPPLY IA4360038 | PERSIA | 363 | — | — | Compliant |
| COUNTRY LIVING MOBILE HOME PK IA7700605 | ALTOONA | 362 | — | — | Compliant |
| LACONA WATER SUPPLY IA9138041 | LACONA | 361 | — | — | Compliant |
| BEAVERDALE HOMEOWNERS ASSOCIATION IA2985303 | WEST BURLINGTON | 360 | — | — | Compliant |
| WEST OKOBOJI HARBOR ASSOCIATION IA3070301 | STORM LAKE | 360 | — | — | Compliant |
| SUNNYBROOK MOBILE HOME PARK IA7700601 | NEWTON | 360 | — | — | Compliant |
| RUDD WATERWORKS IA3440007 | RUDD | 358 | — | — | Compliant |
| LEWIS WATER SUPPLY IA1535078 | LEWIS | 357 | — | — | Compliant |
| C.R. BUILDERS IA5784325 | TODDVILLE | 356 | — | — | Compliant |
| HOLY CROSS WATER SUPPLY IA3146055 | HOLY CROSS | 356 | — | — | Compliant |
| CALAMUS WATER SUPPLY IA2320062 | CALAMUS | 356 | — | — | Compliant |
| MCCALLSBURG WATER SUPPLY IA8552010 | COLO | 353 | — | — | Compliant |
| TEMPLETON WATER SUPPLY IA1479015 | TEMPLETON | 352 | — | — | Compliant |
| CUMMING WATER TREATMENT PLANT IA9123047 | DES MOINES | 351 | — | — | Compliant |
| PLEASANT VALLEY LE LLC IA7767601 | PLEASANT HILL | 350 | — | — | Compliant |
| RYAN WATER SUPPLY IA2864013 | RYAN | 350 | — | — | Compliant |
| HOLIDAY LAKE WATER SYSTEM LTD IA7909001 | BROOKLYN | 350 | — | — | Compliant |
| LONG BRANCH MAINTENANCE CORP. IA3900300 | DEXTER | 350 | — | — | Compliant |
| TOWER TERRACE MOBILE HOME CRT IA5751693 | HIAWATHA | 350 | — | — | Compliant |
| FORT ATKINSON WATER WORKS IA9641049 | FORT ATKINSON | 347 | — | — | Compliant |
| BENNETT WATERWORKS IA1603005 | LOWDEN | 347 | — | — | Compliant |
| PIERSON WATER SUPPLY IA9766041 | PIERSON | 345 | — | — | Compliant |
| ELLIOTT WATER SUPPLY IA6915015 | ELLIOTT | 345 | — | — | Compliant |
| GARRISON WATER SUPPLY IA0625078 | TRAER | 344 | — | — | Compliant |
| VERDE WATER CO.-TABLE MOUND #1-WELL #2 IA3100610 | DUBUQUE | 342 | — | — | Compliant |
| BRANDON WATER SUPPLY IA1011001 | BRANDON | 341 | — | — | Compliant |
| MT CARMEL WATER SUPPLY IA1462015 | MOUNT CARMEL | 340 | — | — | Compliant |
| CORALVILLE LAKE TERRACE IA5200817 | TIPTON | 340 | — | — | Compliant |
| SUNRISE VILLAGE MOBILE HOME PK IA5200602 | GRINNELL | 340 | — | — | Compliant |
| MONDAMIN WATER SUPPLY IA4349094 | MARSHALLTOWN | 339 | — | — | Compliant |
| UTE WATER SUPPLY IA6762043 | UTE | 338 | — | — | Compliant |
| DIAGONAL WATER DEPARTMENT IA8018040 | DIAGONAL | 338 | — | — | Compliant |
| MIDDLETOWN WATER SUPPLY IA2952075 | MIDDLETOWN | 336 | — | — | Compliant |
| IOWA AMERICAN WATER DONAHUE IA8227045 | DAVENPORT | 335 | — | — | Compliant |
| ROLLING HILLS IA8500634 | NEVADA | 335 | — | — | Compliant |
| TERRIL MUNICIPAL WATERWORKS IA3080016 | TERRIL | 334 | — | — | Compliant |
| BARRINGTON LAKES WATER SYSTEM IA3126301 | DUBUQUE | 333 | — | — | Compliant |
| CLARKE RURAL WATER DISTRICT #1 IA2000702 | OSCEOLA | 330 | — | — | Compliant |
| SUNRISE TERRACE MHC IA5059601 | NEWTON | 330 | — | — | Compliant |
| GUTTENBERG INDUSTRIAL & RESIDENTIAL AREA IA2242101 | GUTTENBERG | 325 | — | — | Compliant |
| GREENWOOD ACRES WATER CO. IA7709395 | ANKENY | 325 | — | — | Compliant |
| MINBURN WATERWORKS IA2547085 | BOUTON | 325 | — | — | Compliant |
| MYSTIC WATER SUPPLY IA0477040 | MYSTIC | 322 | — | — | Compliant |
| PETERSON MUNICIPAL WATER SUPPLY IA2154039 | PETERSON | 322 | — | — | Compliant |
| PONDEROSA PARK MHP IA8222612 | DAVENPORT | 320 | — | — | Compliant |
| CONROY WATER SUPPLY IA4808068 | TAMA | 320 | — | — | Compliant |
| DANBURY WATER SUPPLY IA9729099 | DANBURY | 320 | — | — | Compliant |
| RIPPEY MUNI WATER SUPPLY IA3754088 | RIPPEY | 319 | — | — | Compliant |
| MINGO WATER DEPARTMENT IA5052087 | MINGO | 316 | — | — | Compliant |
| ALTANNA CORPORATION IA5260301 | OXFORD | 316 | — | — | Compliant |
| WILLIAMS WATER SUPPLY IA4070022 | WILLIAMS | 315 | — | — | Compliant |
| WHEEL ESTATES MHC IA6342301 | KNOXVILLE | 315 | — | — | Compliant |
| GRINNELL MHP MHC IA7930601 | GRINNELL | 313 | — | — | Compliant |
| FLOYD MUNI WATER SUPPLY IA3414044 | FLOYD | 313 | — | — | Compliant |
| IRWIN MUNICIPAL SUPPLY IA8340099 | IRWIN | 313 | — | — | Compliant |
| BURDS GREEN ACRES SUBDIVISION IA3170302 | PEOSTA | 312 | — | — | Compliant |
| SURREY HEIGHTS WATER COMPANY IA8222310 | BETTENDORF | 310 | — | — | Compliant |
| VALLEY VILLAGE MOBILE HOME COU IA9000672 | OTTUMWA | 310 | — | — | Compliant |
| GRANVILLE WATER SUPPLY IA8429002 | GRANVILLE | 310 | — | — | Compliant |
| WEST OKOBOJI IA3090081 | MILFORD | 308 | — | — | Compliant |
| SHELDAHL WATER SUPPLY IA7778039 | SHELDAHL | 307 | — | — | Compliant |
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