PFAS contamination data for 5,286 water systems in Iowa, serving 3,525,397 people.
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 eligibility check — plus weekly MCL, deadline, and funding alerts for Iowa.
| 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 | 141,831 | — | — | Compliant |
| SIOUX CITY WATER SUPPLY IA9778054 | SIOUX CITY | 85,791 | 6 | 4.3 | Exceeds |
| ANKENY, CITY OF IA7709053 | ANKENY | 76,207 | — | — | Compliant |
| WATERLOO WATER WORKS IA0790074 | WATERLOO | 69,504 | — | — | Exceeds |
| IOWA CITY WATER DEPARTMENT IA5225079 | IOWA CITY | 68,753 | — | — | Compliant |
| WEST DES MOINES WATER WORKS IA7785007 | WEST DES MOINES | 68,723 | — | — | 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 | 27,591 | — | — | 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 |
| IOWA-AMERICAN WTR CO-CLINTON DISTRICT IA2326048 | CLINTON | 24,769 | — | — | Compliant |
| JOHNSTON MUNICIPAL WATER SUPPLY IA7740011 | JOHNSTON | 24,064 | — | — | Compliant |
| CORALVILLE MUNI WATER SYSTEM IA5208071 | CORALVILLE | 22,318 | — | — | Compliant |
| SIRWA #2 (CRESTON) IA8080701 | CRESTON | 20,793 | — | — | Compliant |
| NORTH LIBERTY WATER SUPPLY IA5252072 | NORTH LIBERTY | 20,491 | — | — | Compliant |
| WARREN WATER DISTRICT IA9133701 | INDIANOLA | 20,095 | — | — | Compliant |
| ALTOONA WATER SUPPLY IA7707030 | ALTOONA | 19,565 | — | — | Compliant |
| CLIVE WATER DEPARTMENT IA7720051 | CLIVE | 19,010 | — | — | 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 |
| GRIMES WATER SUPPLY IA7736011 | GRIMES | 15,392 | — | — | 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 | 10,571 | — | — | 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 | 8,500 | — | — | 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 |
| 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 |
| TIFFIN WATER SUPPLY IA5288021 | TIFFIN | 4,512 | — | — | 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 |
| CRESCO WATERWORKS IA4515087 | CRESCO | 3,913 | — | — | Compliant |
| WEST LIBERTY WATER UTILITY IA7073010 | WEST LIBERTY | 3,858 | — | — | 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 |
| 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 |
| MILFORD MUNICIPAL UTILITIES IA3050079 | MILFORD | 3,321 | — | — | 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 | MADRID | 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 |
| CENTRAL IA WATER ASSN (MARSHALLTOWN) IA6469071 | NEWTON | 2,700 | — | — | Compliant |
| HAWARDEN WATER SUPPLY IA8434040 | HAWARDEN | 2,700 | — | — | Compliant |
| MISSOURI VALLEY WATER SUPPLY IA4344088 | MISSOURI VALLEY | 2,684 | — | — | Compliant |
| BLOOMFIELD MUNI WATER DEPT IA2613019 | BLOOMFIELD | 2,682 | — | — | 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 |
| LAMONI MUNICIPAL UTILITIES IA2740050 | LAMONI | 2,104 | — | — | Compliant |
| WAPELLO MUNICIPAL WATER WORKS IA5879063 | WAPELLO | 2,096 | — | — | 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 |
| SAC CITY MUNICIPAL WATER PLANT IA8150015 | SAC CITY | 2,063 | — | — | 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 |
| 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 |
| GREENFIELD PLAZA BENEFITED WTR DISTRICT IA7700801 | DES MOINES | 2,000 | — | — | Compliant |
| POWESHIEK WATER ASSOCIATION (CR) IA5715702 | TAMA | 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 | 1,622 | — | — | 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 |
| URBAN BLUFFS - NORTH IA7820701 | AVOCA | 1,558 | — | — | Compliant |
| AKRON, CITY OF IA7509008 | AKRON | 1,558 | — | — | Compliant |
| URBANA WATER SUPPLY IA0680041 | URBANA | 1,554 | — | — | Compliant |
| WALCOTT WATERWORKS IA8285058 | WALCOTT | 1,551 | — | — | 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 |
| LYON-SIOUX RWS-BIG SIOUX IA6000755 | ROCK RAPIDS | 1,530 | — | — | Compliant |
| WELLMAN MUNICIPAL WATERWORKS IA9276096 | WELLMAN | 1,524 | — | — | Compliant |
| OAKLAND MUNIC WATER UTILITY IA7856084 | OAKLAND | 1,524 | — | — | Compliant |
| BEDFORD WATER WORKS IA8709096 | BEDFORD | 1,508 | — | — | 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 |
| 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 |
| LENOX WATER SUPPLY IA8748075 | LENOX | 1,339 | — | — | 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 |
| COON RAPIDS MUNICIPAL UTILITIES IA1427070 | COON RAPIDS | 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 |
| AMANA SOCIETY WATER SYSTEM NORTH IA4848001 | AMANA | 1,248 | — | — | Compliant |
| ALTON MUNICIPAL WATER DEPARTMENT IA8403029 | ALTON | 1,248 | — | — | 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 |
| GLIDDEN WATER SUPPLY IA1438091 | GLIDDEN | 1,151 | — | — | Compliant |
| LAKE VIEW WATER SUPPLY IA8127048 | LAKE VIEW | 1,133 | — | — | Compliant |
| VILLISCA MUNICIPAL WATER DEPT IA6985051 | VILLISCA | 1,132 | — | — | Compliant |
| GLENWOOD RESOURCE CENTER IA6525901 | GLENWOOD | 1,130 | — | — | Compliant |
| SHEFFIELD WATER SUPPLY IA3570037 | SHEFFIELD | 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 |
| FAIRBANK WATER SUPPLY IA1025031 | FAIRBANK | 1,111 | — | — | Compliant |
| ARNOLDS PARK WATER DEPARTMENT IA3003067 | ARNOLDS PARK | 1,110 | — | — | 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 |
| PANORA WATER WORKS IA3971026 | PANORA | 1,091 | — | — | Compliant |
| MARCUS WATER SUPPLY IA1838032 | MARCUS | 1,079 | — | — | Compliant |
| SIDNEY WATER SUPPLY IA3661048 | SIDNEY | 1,077 | — | — | Compliant |
| GEORGE WATER SUPPLY IA6028081 | GEORGE | 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 | TREYNOR | 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 |
| WINFIELD MUNI WATER DEPT IA4493028 | WINFIELD | 1,035 | — | — | Compliant |
| DUNLAP WATER SUPPLY IA4316087 | DUNLAP | 1,035 | — | — | Compliant |
| JANESVILLE WATER SUPPLY IA0932001 | JANESVILLE | 1,034 | — | — | Compliant |
| AUTUMN RIDGE ESTATES MHP IA7709601 | NEWTON | 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 |
| YES FIVE SEASONS CEDAR LLC IA5715602 | NEWTON | 994 | — | — | Compliant |
| ODEBOLT WATER SUPPLY IA8144087 | ODEBOLT | 994 | — | — | Compliant |
| GREENE MUNI WATER SUPPLY IA1253006 | GREENE | 994 | — | — | 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 |
| WAYLAND WATER SUPPLY IA4490091 | WAYLAND | 966 | — | — | Compliant |
| ALLISON WATER SUPPLY IA1203026 | ALLISON | 966 | — | — | Compliant |
| SHELLSBURG WATER SUPPLY IA0670043 | SHELLSBURG | 961 | — | — | Compliant |
| KEOSAUQUA WATER WORKS IA8938026 | KEOSAUQUA | 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 |
| LAWTON WATER SUPPLY IA9743065 | LAWTON | 943 | — | — | Compliant |
| EDGEWOOD WATER SUPPLY IA2220002 | EDGEWOOD | 939 | — | — | Compliant |
| HINTON WATER SUPPLY IA7528051 | HINTON | 935 | — | — | Compliant |
| ALPINE PARK IA3126605 | EPWORTH | 932 | — | — | Compliant |
| INWOOD WATER SUPPLY IA6040076 | INWOOD | 928 | — | — | Compliant |
| ELDON WATER SUPPLY IA9053004 | BATAVIA | 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 |
| SIOUX RAPIDS WATER DEPARTMENT IA1175056 | SIOUX RAPIDS | 920 | — | — | 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 |
| MELCHER WATER SUPPLY IA6352064 | MELCHER-DALLAS | 900 | — | — | Compliant |
| GRAETTINGER MUNICIPAL WATER SUPPLY IA7445096 | GRAETTINGER | 897 | — | — | Compliant |
| KEOTA WATER DEPT IA5440028 | KEOTA | 897 | — | — | Compliant |
| PRIMGHAR MUNICIPAL WATER SUPPLY IA7155059 | PRIMGHAR | 896 | — | — | 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 |
| SULLY MUNI WATER WORKS IA5076005 | SULLY | 881 | — | — | Compliant |
| ARMSTRONG WATER SUPPLY IA3203066 | ARMSTRONG | 875 | — | — | Compliant |
| VICTOR MUNICIPAL WATER DEPT IA4875050 | BELLE PLAINE | 875 | — | — | Compliant |
| HILLS WATER SUPPLY IA5221001 | HILLS | 863 | — | — | Compliant |
| RIPLEYS MHC IA LLC IA7000600 | LECLAIRE | 860 | — | — | 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 |
| LAKESIDE ESTATES LLC IA7812601 | GLENWOOD | 823 | — | — | 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 | 794 | — | — | Compliant |
| WEST BEND WATER DEPARTMENT IA7470099 | WEST BEND | 791 | — | — | Compliant |
| RAYMOND WATER SYSTEM IA0768001 | RAYMOND | 788 | — | — | Compliant |
| MILO PUBLIC WATER SUPPLY IA9155083 | MILO | 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 |
| FREEPORT WATER DISTRICT IA9630001 | DECORAH | 775 | — | — | Compliant |
| WHEATLAND CITY WATER SUPPLY IA2394017 | WHEATLAND | 775 | — | — | 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 |
| OKOBOJI WATER SUPPLY IA3060091 | OKOBOJI | 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 |
| GARNAVILLO WATER SUPPLY IA2234074 | GARNAVILLO | 763 | — | — | Compliant |
| ALDEN WATER SUPPLY IA4213013 | ALDEN | 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 | 744 | — | — | 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 |
| SHELBY WATER SUPPLY IA8369038 | SHELBY | 727 | — | — | Compliant |
| WHITING WATER SUPPLY IA6769018 | WHITING | 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 | HOSPERS | 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 |
| COGGON WATER DEPARTMENT IA5722053 | COGGON | 701 | — | — | Compliant |
| BOYDEN MUNICIPAL WATER SUPPLY IA8409037 | BOYDEN | 701 | — | — | Compliant |
| IOWA CITY REGENCY MOBILE HOME COMMUNITY IA5225673 | IOWA CITY | 700 | — | — | Compliant |
| BATTLE CREEK WATER SUPPLY IA4709090 | BATTLE CREEK | 700 | — | — | Compliant |
| WOODWARD RESOURCE CENTER IA0800923 | WOODWARD | 700 | — | — | Compliant |
| LAKESIDE WATER SUPPLY IA1145047 | LAKESIDE | 700 | — | — | Compliant |
| SAINT CHARLES WATER SUPPLY IA6161031 | SAINT CHARLES | 694 | — | — | Compliant |
| DEXTER WATER SUPPLY IA2533038 | DEXTER | 693 | — | — | Compliant |
| UNDERWOOD WATER SUPPLY IA7869037 | UNDERWOOD | 688 | — | — | Compliant |
| WALKER WATER WORKS IA5792059 | WALKER | 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 |
| YES WESTERN VILLAGE LLC IA7785601 | NEWTON | 670 | — | — | Compliant |
| FONTANELLE WATER WORKS IA0135046 | FONTANELLE | 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 |
| ALTO MOBILE HOME PARK IA7800600 | COUNCIL BLUFFS | 650 | — | — | Compliant |
| BENTON COMMERCE VILLAGE IA0680201 | URBANA | 650 | — | — | Compliant |
| RURAL WATER SYSTEM #1 (PLANT 1) IA8400711 | HOSPERS | 650 | — | — | Compliant |
| SOUTHRIDGE ESTATE IA7727603 | NEWTON | 648 | — | — | Compliant |
| SEYMOUR MUNICIPAL UTILITY WATER DEPT IA9368035 | SEYMOUR | 637 | — | — | Compliant |
| MORAVIA PUBLIC WATER SUPPLY IA0467008 | MORAVIA | 637 | — | — | Compliant |
| STANWOOD WATER SUPPLY IA1681092 | STANWOOD | 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 |
| WHAT CHEER WATER SUPPLY IA5493016 | SIGOURNEY | 607 | — | — | Compliant |
| LYON-SIOUX RWS-BOYDEN IA6000744 | ROCK RAPIDS | 605 | — | — | Compliant |
| FARMINGTON WATER SUPPLY IA8930038 | FARMINGTON | 601 | — | — | Compliant |
| CEDAR TERRACE MHC IA5700600 | NEWTON | 600 | — | — | Compliant |
| BRIGHTON MUNICIPAL WATER SUPPLY IA9209043 | BRIGHTON | 600 | — | — | Compliant |
| LAKE CANYADA MOBILE HOME COURT IA8200685 | DAVENPORT | 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 |
| BADGER WATER SUPPLY IA9405082 | BADGER | 561 | — | — | Compliant |
| RADCLIFFE MUNICIPAL WATER IA4283067 | RADCLIFFE | 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 |
| DELMAR WATER SUPPLY IA2328024 | MAQUOKETA | 542 | — | — | Compliant |
| RICHLAND WATER SUPPLY IA5470083 | BRIGHTON | 542 | — | — | Compliant |
| ZEARING WATER DEPARTMENT IA8590041 | ZEARING | 528 | — | — | Compliant |
| SUNSET VILLAGE IA6469601 | NEWTON | 528 | — | — | Compliant |
| DOWS WATER SUPPLY IA9921050 | DOWS | 526 | — | — | Compliant |
| TRURO WATERWORKS IA6167036 | NEWTON | 525 | — | — | Compliant |
| ARCADIA WATER SUPPLY IA1403062 | ARCADIA | 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 |
| ELLSWORTH PUBLIC WATER SUPPLY IA4009016 | ELLSWORTH | 514 | — | — | 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 |
| SCRANTON WATER SYSTEM IA3759031 | SCRANTON | 504 | — | — | Compliant |
| BEACON WATER SUPPLY IA6203093 | OSKALOOSA | 504 | — | — | Compliant |
| MOUNT PLEASANT TREATMENT CENTER IA4400920 | MOUNT PLEASANT | 500 | — | — | Compliant |
| MALMORE ACRES WATER SERVICE IA7820602 | COUNCIL BLUFFS | 500 | — | — | Compliant |
| STARLIGHT MOBILE HOME PARK IA5200600 | IOWA CITY | 500 | — | — | Compliant |
| CLAY REGIONAL WATER - SUPERIOR SUBSYSTEM IA3218701 | SPENCER | 500 | — | — | Compliant |
| BREDA WATER SUPPLY IA1409041 | BREDA | 500 | — | — | Compliant |
| BERWICK WATER DISTRICT IA7714707 | BERWICK | 500 | — | — | Compliant |
| SOUTHERN RURAL WATER ASSOC IA8000301 | ELLSTON | 500 | — | — | Compliant |
| THOMPSON WATER WORKS IA9585017 | THOMPSON | 499 | — | — | Compliant |
| NEW VIRGINIA WATER SUPPLY IA9159067 | NEW VIRGINIA | 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 | 462 | — | — | Compliant |
| COLONIAL/GM/RC IA3102301 | DUBUQUE | 462 | — | — | Compliant |
| RUNNELLS WATER SUPPLY IA7774008 | DES MOINES | 457 | — | — | Compliant |
| TABLE MOUND PARK IA3100600 | CASCASDE | 455 | — | — | Compliant |
| EWING TRACE MHC IA7727604 | NEWTON | 455 | — | — | Compliant |
| AMANA WATER SUPPLY IA4802033 | AMANA | 452 | — | — | Compliant |
| DALLAS MUNICIPAL WATER SUPPLY IA6322096 | MELCHER-DALLAS | 451 | — | — | Compliant |
| ALBION WATER DEPARTMENT IA6403011 | NEWTON | 448 | — | — | Compliant |
| ROYAL MUNICIPAL WATER UTILITIES IA2166006 | SPENCER | 446 | — | — | Compliant |
| LITTLE ROCK WATER SUPPLY IA6060006 | LITTLE ROCK | 441 | — | — | Compliant |
| KLEMME WATER WORKS IA4155035 | KLEMME | 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 |
| ASHTON MUNICIPAL WATER DEPARTMENT IA7209069 | ASHTON | 436 | — | — | 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 |
| ALLERTON WATER WORKS IA9303024 | ALLERTON | 430 | — | — | Compliant |
| BATAVIA WATER WORKS IA5107089 | BATAVIA | 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 |
| MILES WATER DEPARTMENT IA4953078 | MILES | 408 | — | — | Compliant |
| WAHPETON WATER SUPPLY IA3087057 | MILFORD | 408 | — | — | Compliant |
| LAWLER WATER SUPPLY IA1957064 | LAWLER | 406 | — | — | Compliant |
| BAYARD WATER SUPPLY IA3907092 | ADAIR | 405 | — | — | Compliant |
| CHARLOTTE WATER WORKS IA2324016 | MAQUOKETA | 401 | — | — | 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 |
| THORNTON WATER SUPPLY IA1781019 | BELMOND | 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 |
| SOUTHWEST POLK WATER SERVICE, INC. IA7700802 | ANKENY | 393 | — | — | Compliant |
| STOVER HEIGHTS MHC IA7727605 | MADRID | 393 | — | — | Compliant |
| PLAINFIELD WATER SUPPLY IA0960045 | PLAINFIELD | 393 | — | — | Compliant |
| COLUMBUS CITY PUBLIC WATER SUPPLY IA5809063 | OLDS | 392 | — | — | Compliant |
| WESLEY WATER SUPPLY IA5592098 | WESLEY | 390 | — | — | Compliant |
| RIVER HEIGHTS PROPERTY OWNERS ASSOC. IA5200318 | OXFORD | 390 | — | — | Compliant |
| BONAPARTE WATER SUPPLY IA8914031 | WASHINGINTON | 390 | — | — | Compliant |
| CEDAR FALLS MOBILE HOME VILLAGE IA0709600 | WATERLOO | 388 | — | — | Compliant |
| CASEY WATER SUPPLY IA3914081 | CASEY | 387 | — | — | Compliant |
| COLESBURG WATER SUPPLY IA2809055 | COLESBURG | 386 | — | — | Compliant |
| SPILLVILLE WATER SUPPLY IA9686077 | SPILLVILLE | 385 | — | — | 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 |
| MARSHALLTOWN ESTATES IA6400628 | MARSHALLTOWN | 382 | — | — | Compliant |
| NEW VIENNA WATER SUPPLY IA3165014 | NEW VIENNA | 382 | — | — | Compliant |
| WORTHINGTON WATER SUPPLY IA3189001 | WORTHINGTON | 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 |
| CHURDAN WATER SUPPLY IA3709001 | CHURDAN | 375 | — | — | Compliant |
| MARK TWAIN MEADOWS HOMEOWNERS IA7048301 | MUSCATINE | 375 | — | — | Compliant |
| HICKORY HOLLOW WATER SERVICE, INC. IA7709396 | ANKENY | 375 | — | — | 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 |
| MENLO WATER SUPPLY IA3956070 | MENLO | 365 | — | — | Compliant |
| STATE TRAINING SCHOOL IA4236002 | ELDORA | 365 | — | — | Compliant |
| RINGSTED WATER SUPPLY IA3275087 | RINGSTED | 365 | — | — | Compliant |
| STANHOPE WATER DEPARTMENT IA4045090 | STANHOPE | 364 | — | — | Compliant |
| MASSENA WATER SUPPLY IA1558055 | MASSENA | 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 |
| CALAMUS WATER SUPPLY IA2320062 | CALAMUS | 356 | — | — | Compliant |
| HOLY CROSS WATER SUPPLY IA3146055 | HOLY CROSS | 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 |
| TOWER TERRACE MOBILE HOME CRT IA5751693 | HIAWATHA | 350 | — | — | Compliant |
| PLEASANT VALLEY MANUFACTURED HOME COMM IA7767601 | PLEASANT HILL | 350 | — | — | Compliant |
| HOLIDAY LAKE WATER SYSTEM LTD IA7909001 | BROOKLYN | 350 | — | — | Compliant |
| LONG BRANCH MAINTENANCE CORP. IA3900300 | DEXTER | 350 | — | — | Compliant |
| RYAN WATER SUPPLY IA2864013 | RYAN | 350 | — | — | Compliant |
| FORT ATKINSON WATER WORKS IA9641049 | FORT ATKINSON | 347 | — | — | Compliant |
| BENNETT WATERWORKS IA1603005 | LOWDEN | 347 | — | — | 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 |
| CORALVILLE LAKE TERRACE IA5200817 | TIPTON | 340 | — | — | Compliant |
| SUNRISE VILLAGE MOBILE HOME PK IA5200602 | GRINNELL | 340 | — | — | Compliant |
| MT CARMEL WATER SUPPLY IA1462015 | MOUNT CARMEL | 340 | — | — | Compliant |
| MONDAMIN WATER SUPPLY IA4349094 | MARSHALLTOWN | 339 | — | — | Compliant |
| UTE WATER SUPPLY IA6762043 | UTE | 338 | — | — | Compliant |
| DIAGONAL WATER DEPARTMENT IA8018040 | DIAGONAL | 338 | — | — | Compliant |
| PIERSON WATER SUPPLY IA9766041 | PIERSON | 337 | — | — | 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 |
| SUNRISE TERRACE MHC IA5059601 | NEWTON | 330 | — | — | Compliant |
| CLARKE RURAL WATER DISTRICT #1 IA2000702 | OSCEOLA | 330 | — | — | Compliant |
| MINBURN WATERWORKS IA2547085 | BOUTON | 325 | — | — | Compliant |
| GUTTENBERG INDUSTRIAL & RESIDENTIAL AREA IA2242101 | GUTTENBERG | 325 | — | — | Compliant |
| GREENWOOD ACRES WATER CO. IA7709395 | ANKENY | 325 | — | — | Compliant |
| PETERSON MUNICIPAL WATER SUPPLY IA2154039 | PETERSON | 322 | — | — | Compliant |
| MYSTIC WATER SUPPLY IA0477040 | MYSTIC | 322 | — | — | Compliant |
| PONDEROSA PARK MHP IA8222612 | DAVENPORT | 320 | — | — | Compliant |
| DANBURY WATER SUPPLY IA9729099 | DANBURY | 320 | — | — | Compliant |
| CONROY WATER SUPPLY IA4808068 | TAMA | 320 | — | — | Compliant |
| RIPPEY MUNI WATER SUPPLY IA3754088 | RIPPEY | 319 | — | — | Compliant |
| MINGO WATER DEPARTMENT IA5052087 | DES MOINES | 316 | — | — | Compliant |
| ALTANNA CORPORATION IA5260301 | OXFORD | 316 | — | — | Compliant |
| WHEEL ESTATES MHC IA6342301 | KNOXVILLE | 315 | — | — | Compliant |
| WILLIAMS WATER SUPPLY IA4070022 | WILLIAMS | 315 | — | — | Compliant |
| FLOYD MUNI WATER SUPPLY IA3414044 | FLOYD | 313 | — | — | Compliant |
| GRINNELL MHP MHC IA7930601 | GRINNELL | 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 |