4,728 water systems tracked in Montana, serving 1,277,714 people. 1 system has reported a result above an EPA PFAS limit and faces the April 2029 compliance deadline.
Montana follows federal EPA MCLs (PFOA/PFOS: 4 ppt).
MT follows federal EPA MCLs. PFAS investigation at Malmstrom AFB and other sites.
Montana follows federal EPA MCLs. Contamination investigation at Malmstrom AFB and fire training areas.
Free check against EPA UCMR5 data for PFOA and PFOS above the 4 ppt limit, plus weekly Montana MCL, deadline, and funding alerts.
If your system needs a lab, an engineer, a treatment firm or a funding contact, tell us what the project needs. We'll point you to who may fit.
Firms with PFAS-related federal awards routed to Montana (USASpending). See the national top 50 →
| Rank | Recipient | Total awarded | # awards |
|---|---|---|---|
| 1 | MONTANA DEPARTMENT OF ENVIRONMENTAL QUALITY | $36,011,000 | 2 |
| 2 | GS ENVIRONMENTAL, INC. | $66,000 | 1 |
| System | City | Population | PFOA (ppt) | PFOS (ppt) | Status |
|---|---|---|---|---|---|
| BILLINGS CITY OF MT0000153 | BILLINGS | 114,000 | — | — | No result above limit |
| CAMP MUSTANG MT0003181 | CORWIN SPRINGS | 75,816 | — | — | No result above limit |
| MISSOULA WATER MT0000294 | MISSOULA | 68,200 | — | — | No result above limit |
| GREAT FALLS CITY OF MT0000525 | GREAT FALLS | 60,000 | — | — | No result above limit |
| BOZEMAN CITY OF MT0000161 | BOZEMAN | 56,000 | — | — | No result above limit |
| BUTTE SILVERBOW WATER DEPT MT0000170 | BUTTE | 33,000 | — | — | No result above limit |
| HELENA WATER SYSTEM MT0000241 | HELENA | 32,091 | — | — | No result above limit |
| KALISPELL |
| 25,000 |
| — |
| 6.6 |
| Exceeds |
| MONTANA STATE UNIVERSITY BOZEMAN MT0004790 | BOZEMAN | 19,200 | — | — | No result above limit |
| UNIVERSITY OF MONTANA MT0004204 | MISSOULA | 15,000 | — | — | No result above limit |
| BILLINGS HEIGHTS CO WATER DIST OF MT0000155 | BILLINGS | 12,000 | — | — | No result above limit |
| BELGRADE CITY OF MT0000136 | BELGRADE | 10,460 | — | — | No result above limit |
| WHITEFISH CITY OF MT0000357 | WHITEFISH | 10,418 | — | — | No result above limit |
| HAVRE CITY OF MT0000524 | HAVRE | 9,921 | — | — | No result above limit |
| WEST YELLOWSTONE TOWN OF MT0003136 | WEST YELLOWSTONE | 9,899 | — | — | No result above limit |
| MILES CITY CITY OF MT0000291 | MILES CITY | 9,565 | — | — | No result above limit |
| MALMSTROM AIR FORCE BASE MT0000515 | MALMSTROM AIR FORCE BASE | 8,850 | — | — | No result above limit |
| FLATHEAD COUNTY WATER AND SEWER MT0001744 | KALISPELL | 7,775 | — | — | No result above limit |
| LIVINGSTON CITY OF MT0000573 | LIVINGSTON | 7,500 | — | — | No result above limit |
| ANACONDA WATER DEPARTMENT MT0000016 | ANACONDA | 6,750 | — | — | No result above limit |
| LAUREL MUNICIPAL WATER SYSTEM MT0000270 | LAUREL | 6,339 | — | — | No result above limit |
| BIGFORK COUNTY WATER AND SEWER MT0000262 | BIGFORK | 6,100 | — | — | No result above limit |
| LEWISTOWN CITY OF MT0000271 | LEWISTOWN | 5,923 | — | — | No result above limit |
| LOCKWOOD WATER AND SEWER DISTRICT MT0000156 | BILLINGS | 5,900 | — | — | No result above limit |
| ROCKY MOUNTAIN COLLEGE MT0004796 | BILLINGS | 5,700 | — | — | No result above limit |
| HAMILTON CITY OF MT0000234 | HAMILTON | 5,660 | — | — | No result above limit |
| POLSON CITY OF MT0000308 | POLSON | 5,300 | — | — | No result above limit |
| SIDNEY CITY OF MT0000330 | SIDNEY | 5,000 | — | — | No result above limit |
| LIBBY CITY OF MT0000274 | LIBBY | 4,892 | — | — | No result above limit |
| GLENDIVE CITY OF MT0000229 | GLENDIVE | 4,873 | — | — | No result above limit |
| BROWNING TOWN OF MT0000169 | BROWNING | 4,773 | — | — | No result above limit |
| TOWN OF BROWNING 083090091 | BROWNING | 4,671 | — | — | No result above limit |
| COLUMBIA FALLS CITY OF MT0000181 | COLUMBIA FALLS | 4,450 | — | — | No result above limit |
| NORTH STAR ZOOT WATER MT0004284 | BOZEMAN | 4,323 | — | — | No result above limit |
| DILLON CITY OF MT0000201 | DILLON | 4,300 | — | — | No result above limit |
| RIVER ROCK COUNTY WATER AND SEWER DIST MT0004082 | BELGRADE | 4,200 | — | — | No result above limit |
| BIG SKY COUNTY WATER AND SEWER DIST 363 MT0002385 | BIG SKY | 4,132 | — | — | No result above limit |
| VALLEY WATER COMPANY MT0001577 | HAMILTON | 4,000 | — | — | No result above limit |
| SHELBY CITY OF MT0000328 | SHELBY | 3,970 | — | — | No result above limit |
| HARDIN CITY OF MT0000235 | HARDIN | 3,500 | — | — | No result above limit |
| GLASGOW WATER CONDITIONING MT0003401 | GLASGOW | 3,500 | — | — | No result above limit |
| LOLO WATER AND SEWER DIST MT0000278 | LOLO | 3,315 | — | — | No result above limit |
| GLASGOW CITY OF MT0000415 | GLASGOW | 3,253 | — | — | No result above limit |
| POPLAR, CITY OF 083090051 | POPLAR | 3,025 | — | — | No result above limit |
| BIG SKY DRINKING WATER INC MT0003371 | CORVALLIS | 3,025 | — | — | No result above limit |
| DRY PRAIRIE RURAL WATER AUTHORITY MT0004348 | CULBERTSON | 3,005 | — | — | No result above limit |
| WOLF POINT CITY OF 083090058 | WOLF POINT | 3,000 | — | — | No result above limit |
| MONTANA STATE UNIVERSITY BILLINGS MT0004788 | BILLINGS | 2,999 | — | — | No result above limit |
| POPLAR CITY OF MT0000310 | POPLAR | 2,926 | — | — | No result above limit |
| DEER LODGE CITY OF MT0000197 | DEER LODGE | 2,900 | — | — | No result above limit |
| MEADOW VILLAGE BIG SKY MT0002384 | BIG SKY | 2,756 | — | — | No result above limit |
| LAME DEER WATER SYSTEM 083090064 | LAME DEER | 2,605 | — | — | No result above limit |
| FORT BELKNAP AGENCY WATER SYSTEM 083090041 | HARLEM | 2,600 | — | — | No result above limit |
| CONSOLIDATED CHEYENNE US MT0000008 | LAME DEER | 2,500 | — | — | No result above limit |
| CONRAD WATER DEPT MT0000186 | CONRAD | 2,500 | — | — | No result above limit |
| RONAN CITY OF MT0000318 | RONAN | 2,483 | — | — | No result above limit |
| BIG MOUNTAIN WATER COMPANY MT0000060 | WHITEFISH | 2,435 | — | — | No result above limit |
| COLSTRIP CITY OF MT0000180 | COLSTRIP | 2,350 | — | — | No result above limit |
| RAE WATER AND SEWER DIST 313 MT0000628 | BOZEMAN | 2,325 | — | — | No result above limit |
| FORSYTH CITY OF MT0000215 | FORSYTH | 2,260 | — | — | No result above limit |
| ROCKER WATER AND SEWER DISTRICT MT0003478 | ROCKER | 2,250 | — | — | No result above limit |
| WELBORN AQUA HAUL MT0005114 | BELGRADE | 2,246 | — | — | No result above limit |
| PABLO LAKE COUNTY WATER AND SEWER DIST MT0001917 | PABLO | 2,175 | — | — | No result above limit |
| EAST HELENA CITY OF MT0000196 | EAST HELENA | 2,114 | — | — | No result above limit |
| MONTANA STATE PRISON MT0000198 | DEER LODGE | 2,100 | — | — | No result above limit |
| TROY CITY OF MT0000348 | TROY | 2,100 | — | — | No result above limit |
| STEVENSVILLE TOWN OF MT0000335 | STEVENSVILLE | 2,090 | — | — | No result above limit |
| CROW AGENCY WATER SYSTEM 083090011 | CROW AGENCY | 2,057 | — | — | No result above limit |
| RED LODGE WATER DEPT MT0000314 | RED LODGE | 2,000 | — | — | No result above limit |
| EASTGATE VILLAGE SEWER AND WATER MT0001784 | EAST HELENA | 2,000 | — | — | No result above limit |
| TOWNSEND CITY OF MT0000344 | TOWNSEND | 2,000 | — | — | No result above limit |
| ROCKY BOY'S RURAL WATER 083090075 | BOX ELDER | 2,000 | — | — | No result above limit |
| EUREKA TOWN OF MT0000210 | EUREKA | 1,995 | — | — | No result above limit |
| FAIRMONT HOT SPRINGS RESORT MT0000589 | ANACONDA | 1,965 | — | — | No result above limit |
| THREE FORKS CITY OF MT0000343 | THREE FORKS | 1,900 | — | — | No result above limit |
| COLUMBUS TOWN OF MT0000185 | COLUMBUS | 1,900 | — | — | No result above limit |
| ROUNDUP WATER DEPARTMENT MT0000321 | ROUNDUP | 1,900 | — | — | No result above limit |
| BAKER CITY OF MT0000021 | BAKER | 1,858 | — | — | No result above limit |
| MALTA CITY OF MT0000284 | MALTA | 1,800 | — | — | No result above limit |
| SUN PRAIRIE VILLAGE COUNTY MT0000521 | GREAT FALLS | 1,800 | — | — | No result above limit |
| MANHATTAN TOWN OF MT0000285 | MANHATTAN | 1,800 | — | — | No result above limit |
| ASSINIBOINE & SIOUX RURAL WATER SYSTEM 083090050 | POPLAR | 1,726 | — | — | No result above limit |
| HILL COUNTY WATER DISTRICTS MT0000249 | HINGHAM | 1,720 | — | — | No result above limit |
| PLAINS TOWN OF MT0000305 | PLAINS | 1,700 | — | — | No result above limit |
| PLENTYWOOD WATER DEPARTMENT MT0000306 | PLENTYWOOD | 1,700 | — | — | No result above limit |
| CHOTEAU CITY OF MT0000175 | CHOTEAU | 1,691 | — | — | No result above limit |
| BIG TIMBER CITY OF MT0000463 | BIG TIMBER | 1,650 | — | — | No result above limit |
| SEELEY LAKE WATER DISTRICT MT0000327 | SEELEY LAKE | 1,575 | — | — | No result above limit |
| TWO MEDICINE WATER - EAST GLACIER 083090090 | BROWNING | 1,504 | — | — | No result above limit |
| YELLOWSTONE ICE AND WATER MT0003429 | BILLINGS | 1,500 | — | — | No result above limit |
| VIRGINIA CITY WATER DEPT MT0000353 | VIRGINIA CITY | 1,500 | — | — | No result above limit |
| WHITEHALL TOWN OF MT0000359 | WHITEHALL | 1,500 | — | — | No result above limit |
| FORT BENTON CITY OF MT0000216 | FORT BENTON | 1,500 | — | — | No result above limit |
| ROCKY BOY AGENCY WATER SYSTEM 083090079 | BOX ELDER | 1,442 | — | — | No result above limit |
| WORDEN COMMUNITY WUA MT0000365 | WORDEN | 1,400 | — | — | No result above limit |
| BOULDER CITY OF MT0000158 | BOULDER | 1,400 | — | — | No result above limit |
| ENNIS TOWN OF MT0000208 | ENNIS | 1,400 | — | — | No result above limit |
| PHILIPSBURG TOWN OF MT0000304 | PHILIPSBURG | 1,360 | — | — | No result above limit |
| EL MAR ESTATES MSLA CO WATER MT0000517 | MISSOULA | 1,350 | — | — | No result above limit |
| CHINOOK CITY OF MT0000174 | CHINOOK | 1,300 | — | — | No result above limit |
| VA MEDICAL CENTER HELENA MT0000246 | FORT HARRISON | 1,275 | — | — | No result above limit |
| BLACK EAGLE CASCADE COUNTY WATER SEWER MT0000157 | BLACK EAGLE | 1,233 | — | — | No result above limit |
| LAKESIDE WATER SYSTEM MT0000266 | LAKESIDE | 1,225 | — | — | No result above limit |
| CROW AGENCY WATER PLANT MT0000190 | CROW AGENCY | 1,200 | — | — | No result above limit |
| FOREST PARK WATER RSID 24 MT0000233 | GLENDIVE | 1,200 | — | — | No result above limit |
| HELENA LEISURE LLC MT0000590 | HELENA | 1,200 | — | — | No result above limit |
| HUNGRY HORSE CO WATER AND SEWER DISTRICT MT0000253 | HUNGRY HORSE | 1,135 | — | — | No result above limit |
| SUPERIOR TOWN OF MT0000339 | SUPERIOR | 1,100 | — | — | No result above limit |
| ABSAROKEE WATER AND SEWER DIST MT0000003 | ABSAROKEE | 1,100 | — | — | No result above limit |
| HARLOWTON CITY OF MT0000240 | HARLOWTON | 1,050 | — | — | No result above limit |
| ST MARY HEADQUARTERS AND CG MT0002729 | WEST GLACIER | 1,030 | — | — | No result above limit |
| SCOBEY CITY OF MT0000326 | SCOBEY | 1,026 | — | — | No result above limit |
| WHITE SULPHUR SPRINGS CITY OF MT0000360 | WHITE SULPHUR SPRINGS | 1,000 | — | — | No result above limit |
| PRAIRIE WATER COMPANY MT0003539 | GREAT FALLS | 1,000 | — | — | No result above limit |
| FAIRVIEW TOWN OF MT0000213 | FAIRVIEW | 1,000 | — | — | No result above limit |
| MEADOW LAKE CO WATER AND SEWER DISTRICT MT0000914 | COLUMBIA FALLS | 950 | — | — | No result above limit |
| WESTVIEW MOBILE HOME PARK MT0000437 | MISSOULA | 947 | — | — | No result above limit |
| EAST GLACIER CO WATER AND SEWER DIST MT0002887 | EAST GLACIER | 900 | — | — | No result above limit |
| PIONEER WATER SERVICE MT0004226 | BILLINGS | 900 | — | — | No result above limit |
| CULLIGAN WATER CONDITIONING GREAT FALLS MT0002630 | GREAT FALLS | 900 | — | — | No result above limit |
| CHESTER TOWN OF MT0000173 | CHESTER | 870 | — | — | No result above limit |
| DARBY TOWN OF MT0000195 | DARBY | 850 | — | — | No result above limit |
| HAYS/WHITE COW CANYON WS 083090044 | HARLEM | 840 | — | — | No result above limit |
| VALLEY GROVE SUBDIVISION MT0003780 | BELGRADE | 825 | — | — | No result above limit |
| HARLEM CITY OF MT0000239 | HARLEM | 820 | — | — | No result above limit |
| PHANTOM HILLS WATER SYSTEM MT0004379 | MISSOULA | 810 | — | — | No result above limit |
| PINESDALE TOWN OF MT0002926 | PINESDALE | 800 | — | — | No result above limit |
| WORDEN BALLANTINE YELLOWSTONE MT0000022 | BALLANTINE | 800 | — | — | No result above limit |
| JEFFERSON HILLS WUA MT0002978 | HELENA | 780 | — | — | No result above limit |
| SOMERS CO WATER AND SEWER DIST MT0000332 | SOMERS | 765 | — | — | No result above limit |
| FISHER WATER SERVICE MT0001848 | BILLINGS | 750 | — | — | No result above limit |
| FORT BELKNAP INDIAN AGENCY MT0000238 | HARLEM | 750 | — | — | No result above limit |
| LANDMARK SUBDIVISION MT0004262 | BOZEMAN | 750 | — | — | No result above limit |
| BRIDGER TOWN OF MT0000165 | BRIDGER | 750 | — | — | No result above limit |
| TIBER COUNTY WATER DISTRICT MT0000400 | BRADY | 750 | — | — | No result above limit |
| MONTANA STATE HOSPITAL COMPLEX MT0004805 | WARM SPRINGS | 721 | — | — | No result above limit |
| FAIRFIELD TOWN OF MT0000212 | FAIRFIELD | 718 | — | — | No result above limit |
| NORTH STAR PUD MT0004264 | HELENA | 715 | — | — | No result above limit |
| CULBERTSON TOWN OF MT0000192 | CULBERTSON | 714 | — | — | No result above limit |
| TRAVOIS VILLAGE MOBILE PARK MT0003909 | MISSOULA | 702 | — | — | No result above limit |
| GARDINER PARK CO WATER DIST MT0000224 | GARDINER | 700 | — | — | No result above limit |
| ST IGNATIUS TOWN OF MT0001740 | ST IGNATIUS | 700 | — | — | No result above limit |
| WOODS BAY WATER AND SEWER DISTRICT MT0004698 | BIGFORK | 685 | — | — | No result above limit |
| ELK GROVE WATER MT0004248 | BOZEMAN | 672 | — | — | No result above limit |
| GENESIS BUSINESS PARK MT0004178 | GALLATIN GATEWAY | 670 | — | — | No result above limit |
| FORT PECK RURAL COUNTY WATER DISTRICT MT0004177 | FT. PECK | 663 | — | — | No result above limit |
| ST LABRE INDIAN SCHOOL MT0000018 | ASHLAND | 650 | — | — | No result above limit |
| CASCADE TOWN OF MT0000171 | CASCADE | 650 | — | — | No result above limit |
| BEDROCKBABB WATER SYSTEM 083090004 | BROWNING | 645 | — | — | No result above limit |
| CIRCLE TOWN OF MT0000176 | CIRCLE | 644 | — | — | No result above limit |
| SHERIDAN TOWN OF MT0000329 | SHERIDAN | 632 | — | — | No result above limit |
| GREENFIELD MOBILE HOME PARK MT0000373 | MISSOULA | 620 | — | — | No result above limit |
| BIG SANDY TOWN OF MT0000150 | BIG SANDY | 608 | — | — | No result above limit |
| PTARMIGAN VILLAGE INC MT0000133 | WHITEFISH | 600 | — | — | No result above limit |
| CEDAR PARK WATER PLANT MT0000625 | BILLINGS | 600 | — | — | No result above limit |
| HOT SPRINGS MUNICIPAL WATER MT0000251 | HOT SPRINGS | 600 | — | — | No result above limit |
| MEDICINE LAKE TOWN OF MT0000289 | MEDICINE LAKE | 600 | — | — | No result above limit |
| BELT TOWN OF MT0000138 | BELT | 600 | — | — | No result above limit |
| JOLIET TOWN OF MT0000256 | JOLIET | 600 | — | — | No result above limit |
| CHERRY CREEK ESTATES LLC MT0004392 | BILLINGS | 600 | — | — | No result above limit |
| VAUGHN CASCADE COUNTY WATER AND SEWER MT0000352 | VAUGHN | 585 | — | — | No result above limit |
| FRENCHTOWN HIGH SCHOOL MT0000856 | FRENCHTOWN | 550 | — | — | No result above limit |
| WIBAUX TOWN OF MT0000361 | WIBUAX | 550 | — | — | No result above limit |
| BUSBY COMMUNITY WATER SYSTEM 083090063 | LAME DEER | 535 | — | — | No result above limit |
| WINDSOR ESTATES MT0003807 | LINCOLN | 530 | — | — | No result above limit |
| TWO BUTTES WATER USERS ASSN MT0000580 | FORT SHAW | 525 | — | — | No result above limit |
| WYE AREA WATER SYSTEM MT0004107 | MISSOULA | 512 | — | — | No result above limit |
| HIGHLAND PARK UTILITIES ASSN MT0000570 | GLENDIVE | 500 | — | — | No result above limit |
| CAMP CREEK CAMPGROUND - BLM MT0003222 | LEWISTOWN | 500 | — | — | No result above limit |
| RUDYARD WATER USERS MT0003126 | HINGHAM | 500 | — | — | No result above limit |
| COVERED WAGON MB HM PARK MT0003810 | LINCOLN | 500 | — | — | No result above limit |
| HOMESTEAD ACRES COUNTY WATER AND SEWER MT0000526 | GREAT FALLS | 500 | — | — | No result above limit |
| W YELLOWSTONE MT SPRING WATER MT0003661 | WEST YELLOWSTONE | 500 | — | — | No result above limit |
| MT STATE HOSPITAL WARM SPRINGS MT0000354 | WARM SPRINGS | 500 | — | — | No result above limit |
| HEADQUARTERS APGAR MT0003176 | WEST GLACIER | 500 | — | — | No result above limit |
| GORE HILL COUNTY WATER DIST MT0000232 | GREAT FALLS | 500 | — | — | No result above limit |
| FROMBERG TOWN OF MT0000222 | FROMBERG | 498 | — | — | No result above limit |
| ALBERTON TOWN OF MT0000015 | ALBERTON | 495 | — | — | No result above limit |
| LODGE GRASS TOWN OF MT0000277 | LODGE GRASS | 480 | — | — | No result above limit |
| CUSTER CO WATER AND SEWER DIST MT0003041 | MILES CITY | 480 | — | — | No result above limit |
| CUT BANK NORTH WATER DISTRICT MT0000619 | CUT BANK | 478 | — | — | No result above limit |
| PRYOR CREEK WATER ASSN MT0002956 | HUNTLEY | 475 | — | — | No result above limit |
| FLATHEAD CO WATER DISTRICT NO 8 MT0000261 | COLUMBIA FALLS | 475 | — | — | No result above limit |
| TRI COUNTY WATER DISTRICT MT0002912 | POWER | 470 | — | — | No result above limit |
| SUNBURST TOWN OF MT0000338 | SUNBURST | 459 | — | — | No result above limit |
| INDIAN SPRINGS RANCH SUB MT0004611 | EUREKA | 455 | — | — | No result above limit |
| VALIER TOWN OF MT0000351 | VALIER | 452 | — | — | No result above limit |
| FRAZER WATER SYSTEM 083090053 | WOLF POINT | 452 | — | — | No result above limit |
| NORTH VALLEY COUNTY WATER AND SEWER DIST MT0003595 | GLASGOW | 450 | — | — | No result above limit |
| BROADUS TOWN OF MT0000166 | BROADUS | 450 | — | — | No result above limit |
| FROID TOWN OF MT0000221 | FROID | 450 | — | — | No result above limit |
| FORT SMITH WATER AND SEWER DISTRICT MT0004765 | WORDEN | 450 | — | — | No result above limit |
| BAXTER CREEK NO 2 HOA MT0003323 | BELGRADE | 450 | — | — | No result above limit |
| ANDESITE RIDGE WATER SYSTEM MT0004468 | BIG SKY | 450 | — | — | No result above limit |
| CONSOLIDATED CHARLO LAKE CO W AND S DIST MT0000172 | CHARLO | 450 | — | — | No result above limit |
| CORAM COUNTY WATER AND SEWER DISTRICT MT0000189 | CORAM | 450 | — | — | No result above limit |
| DRY PRAIRIE VALLEY COUNTY MT0004708 | CULBERTSON | 440 | — | — | No result above limit |
| BUSHARD WATER COMPANY MT0005164 | BLACK EAGLE | 425 | — | — | No result above limit |
| STANFORD TOWN OF MT0000334 | STANFORD | 425 | — | — | No result above limit |
| TWIN BRIDGES TOWN OF MT0000349 | TWIN BRIDGES | 424 | — | — | No result above limit |
| PRYOR WATER SYSTEM 083090012 | CROW AGENCY | 406 | — | — | No result above limit |
| LA CASA GRANDE WATER AND SEWER DISTRICT MT0001924 | EAST HELENA | 404 | — | — | No result above limit |
| EL-MAR TRAILER COURT MT0000375 | MISSOULA | 400 | — | — | No result above limit |
| JOPLIN WATER USERS MT0003129 | HINGHAM | 400 | — | — | No result above limit |
| FRAZER WATER USERS ASSN MT0000220 | FRAZER | 400 | — | — | No result above limit |
| ROUND BUTTE WATER COMPANY MT0000320 | RONAN | 400 | — | — | No result above limit |
| SKYVIEW WATER AND SEWER UTILITY MT0004039 | EAST HELENA | 400 | — | — | No result above limit |
| HEART BUTTE WATER SYSTEM 083090005 | BROWNING | 400 | — | — | No result above limit |
| HIGHWOOD MOBILE HOME PARK MT0004681 | GREAT FALLS | 400 | — | — | No result above limit |
| ASHLAND WATER AND SEWER DIST MT0000458 | ASHLAND | 400 | — | — | No result above limit |
| EKALAKA TOWN OF MT0000206 | EKALAKA | 400 | — | — | No result above limit |
| WYLIE CREEK ESTATES SUBDIVISION MT0003961 | BOZEMAN | 400 | — | — | No result above limit |
| EAGLEMAN COMMUNITY WATER 083090074 | BOX ELDER | 400 | — | — | No result above limit |
| GOLDEN ESTATES HOMEOWNERS ASSOCIATION MT0004187 | EAST HELENA | 400 | — | — | No result above limit |
| FOREST ACRES TR PK WHITEFISH MT0000064 | WHITEFISH | 390 | — | — | No result above limit |
| GRANT CREEK WATER USERS ASSOCIATION INC MT0003305 | MISSOULA | 380 | — | — | No result above limit |
| SUNDANCE SUBDIVISION MT0005056 | BILLINGS | 378 | — | — | No result above limit |
| STONE CREEK SUBDIVISION MT0005183 | BILLINGS | 378 | — | — | No result above limit |
| JETTE MEADOWS LAKE CO W AND S DIST MT0003100 | POLSON | 375 | — | — | No result above limit |
| BROCKTON, TOWN OF 083090057 | WOLF POINT | 375 | — | — | No result above limit |
| DRY REDWATER REGIONAL WATER AUTHORITY MT0004839 | CIRCLE | 365 | — | — | No result above limit |
| JORDAN TOWN OF MT0000257 | JORDAN | 364 | — | — | No result above limit |
| ST IGNATIUS (MISSION) SO.SIDE 083090031 | PABLO | 356 | — | — | No result above limit |
| MT MOONLIGHT BASIN MT0004023 | BELGRADE | 355 | — | — | No result above limit |
| CHERRY VIEW MT0004856 | LAKESIDE | 352 | — | — | No result above limit |
| FORT SMITH W AND S DIST FORT SMITH TR PK MT0000104 | FORT SMITH | 350 | — | — | No result above limit |
| HIDDEN LAKE YELLOWSTONE COUNTY W AND S D MT0003374 | BILLINGS | 350 | — | — | No result above limit |
| FIRELIGHT MEADOWS LLC MT0004236 | BOZEMAN | 350 | — | — | No result above limit |
| 779 RADAR SQUADRON MT0000500 | OPHEIM AFS | 350 | — | — | No result above limit |
| BAINVILLE TOWN OF MT0000020 | BAINVILLE | 350 | — | — | No result above limit |
| SUN PRAIRIE WATER DISTRICT MT0000571 | GREAT FALLS | 350 | — | — | No result above limit |
| MONTANA DEVELOPMENT CENTER MT0000159 | BOULDER | 350 | — | — | No result above limit |
| LOWER PIONEER MOUNTAIN WATER SYSTEM MT0004462 | BIG SKY | 350 | — | — | No result above limit |
| WATER SERVICE INC TROUT CREEK MT0000347 | TROUT CREEK | 350 | — | — | No result above limit |
| SADDLE MOUNTAIN CORP CLANCY MT0000057 | CLANCY | 350 | — | — | No result above limit |
| MARTIN CITY COUNTY WATER DISTRICT MT0000286 | MARTIN CITY | 340 | — | — | No result above limit |
| DUTTON TOWN OF MT0000204 | DUTTON | 338 | — | — | No result above limit |
| IRON HORSE HOMEOWNERS ASSOC MT0004052 | COLUMBIA FALLS | 335 | — | — | No result above limit |
| NOXON WATER DISTRICT MT0000299 | NOXON | 330 | — | — | No result above limit |
| V.A. MEDICAL CENTER MILES CITY MT0001933 | MILES CITY | 325 | — | — | No result above limit |
| FOREST PARK WATER USERS ASSOCIATION MT0000591 | CLANCY | 323 | — | — | No result above limit |
| EMERALD VIEW PARK MT0002996 | BILLINGS | 320 | — | — | No result above limit |
| MOUNTAIN ACRES MB HM PK MT0003809 | LINCOLN | 320 | — | — | No result above limit |
| MIDVALE WATER AND SEWER DISTRICT MT0000211 | EUREKA | 320 | — | — | No result above limit |
| SHILOH ROAD DEVELOPMENT MT0005178 | BILLINGS | 315 | — | — | No result above limit |
| SOUTHSIDE PUBLIC WATER SUPPLY MT0002652 | KALISPELL | 306 | — | — | No result above limit |
| SEVILLE WATER SYSTEM 083090008 | BROWNING | 300 | — | — | No result above limit |
| HIGHLAND PARK WATER ASSOC MT0000230 | DAWSON | 300 | — | — | No result above limit |
| HILDRETH SUBDIVISION NO 2 MT0002486 | DILLON | 300 | — | — | No result above limit |
| COOKE CITY WATER DISTRICT MT0000187 | COOKE CITY | 300 | — | — | No result above limit |
| OILMONT COUNTY WATER DISTRICT MT0000587 | SUNBURST | 300 | — | — | No result above limit |
| ROBERTS WUA CARBON CO WATER AND SEWER MT0000317 | ROBERTS | 300 | — | — | No result above limit |
| BIG SKY OF MONT INC MT0000151 | BIG SKY | 300 | — | — | No result above limit |
| NASHUA TOWN OF MT0000297 | NASHUA | 300 | — | — | No result above limit |
| CLYDE PARK WATER DEPT MT0000178 | CLYDE PARK | 300 | — | — | No result above limit |
| KELLER SUBDIVISION NO 2 HOA MT0002485 | DILLON | 300 | — | — | No result above limit |
| GILDFORD WATER USERS MT0003123 | HINGHAM | 300 | — | — | No result above limit |
| MOBILE CITY HOME PARK NO 2 MT0003043 | BILLINGS | 300 | — | — | No result above limit |
| MOUNTAIN MEADOWS ESTATES LLP MT0001791 | BILLINGS | 300 | — | — | No result above limit |
| JETTE LAKE LANDOWNERS ASSOCIATION MT0003102 | POLSON | 295 | — | — | No result above limit |
| NORTHERN PINES COMMUNITY HOA MT0004193 | COLUMBIA FALLS | 295 | — | — | No result above limit |
| ANACONDA CCC MT0062254 | ANACONDA | 290 | — | — | No result above limit |
| KEVIN TOWN OF MT0000265 | KEVIN | 290 | — | — | No result above limit |
| WYOLA WATER SYSTEM 083090014 | CROW AGENCY | 281 | — | — | No result above limit |
| RIDGEWOOD TERRACE MHP MT0004186 | LINCOLN | 280 | — | — | No result above limit |
| HIGHWOOD COUNTY WATER AND SEWER DISTRICT MT0000248 | HIGHWOOD | 280 | — | — | No result above limit |
| LIMA TOWN OF MT0000276 | LIMA | 279 | — | — | No result above limit |
| HIDDEN VILLAGE MT0002386 | BIG SKY | 276 | — | — | No result above limit |
| PACHE WATER SYSTEM 083090036 | PABLO | 276 | — | — | No result above limit |
| TRAPPER CREEK JOB CORPS MT0062207 | DARBY | 275 | — | — | No result above limit |
| GREAT FALLS RV PARK MT0000027 | GREAT FALLS | 274 | — | — | No result above limit |
| WINIFRED TOWN OF MT0000363 | WINIFRED | 274 | — | — | No result above limit |
| ALPINE PACIFIC UTILITIES MT0004700 | SOMERS | 270 | — | — | No result above limit |
| RYEGATE TOWN OF MT0000322 | RYEGATE | 270 | — | — | No result above limit |
| HYSHAM TOWN OF MT0000428 | HYSHAM | 262 | — | — | No result above limit |
| COUNTRY LAKE HOMES WHITEFISH MT0003031 | KALISPELL | 260 | — | — | No result above limit |
| GERALDINE TOWN OF MT0000225 | GERALDINE | 260 | — | — | No result above limit |
| KATOONAH LODGES MT0003692 | MISSOULA | 258 | — | — | No result above limit |
| DENTON TOWN OF MT0000199 | DENTON | 255 | — | — | No result above limit |
| HILLTOP TERRACE NO 2 COLUMBIA F MT0003399 | KALISPELL | 250 | — | — | No result above limit |
| MEADOW VILLAGE WATER DISTRICT MT0000645 | SIDNEY | 250 | — | — | No result above limit |
| HEART BUTTE SCHOOL 083090009 | HEART BUTTE | 250 | — | — | No result above limit |
| HINSDALE WATER DEPARTMENT MT0000250 | HINSDALE | 250 | — | — | No result above limit |
| BLUE SKY HEIGHTS WUA CLANCY MT0000030 | CLANCY | 250 | — | — | No result above limit |
| ANACONDA CIVILIAN CONS CENTER MT0000017 | ANACONDA | 250 | — | — | No result above limit |
| TROUTBECK RISE LAKESIDE EST WATER SYSTEM MT0000267 | LAKESIDE | 250 | — | — | No result above limit |
| LEXLEY ACRES MOBILE HOME PARK MT0000461 | BELGRADE | 250 | — | — | No result above limit |
| SORREL SPRINGS HOA MT0000518 | FRENCHTOWN | 250 | — | — | No result above limit |
| KICKING HORSE JOB CENTER MT0000558 | RONAN | 250 | — | — | No result above limit |
| STARR SCHOOL WATER SYSTEM 083090007 | BROWNING | 250 | — | — | No result above limit |
| WILSALL WATER DISTRICT MT0000362 | WILSALL | 250 | — | — | No result above limit |
| RIDGEWOOD ESTATES MT0003175 | BIGFORK | 250 | — | — | No result above limit |
| GRANITE PARK WATER ASSOCIATION MT0004563 | BILLINGS | 250 | — | — | No result above limit |
| PRECISION WATER MT0004497 | BILLINGS | 250 | — | — | No result above limit |
| PONDEROSA HOMEOWNERS ASSN INC MT0002863 | KALISPELL | 246 | — | — | No result above limit |
| WELLS GARDEN ESTATES MT0002927 | BILLINGS | 240 | — | — | No result above limit |
| FORT PECK TOWN OF MT0000218 | FORT PECK | 240 | — | — | No result above limit |
| YELLOWSTONE BOYS AND GIRLS RANCH MT0000154 | BILLINGS | 240 | — | — | No result above limit |
| HEART BUTTE SCHOOL MT0003160 | HEART BUTTE | 240 | — | — | No result above limit |
| GREEN TREE MEADOWS COUNTY W AND S DIST MT0003194 | BIGFORK | 237 | — | — | No result above limit |
| SKYCREST ESTATES SUBDIVISION MT0004964 | BILLINGS | 235 | — | — | No result above limit |
| EAGLE BEND DEVELOPMENT MT0003071 | BIGFORK | 235 | — | — | No result above limit |
| KOKANEE BEND HOA MT0002997 | COLUMBIA FALLS | 230 | — | — | No result above limit |
| HUNTLEY YELLOWSTONE CO WATER AND SEWER MT0000254 | HUNTLEY | 230 | — | — | No result above limit |
| HEBGEN LAKE ESTATES CO WATER SEWER DISTR MT0001983 | WEST YELLOWSTONE | 230 | — | — | No result above limit |
| SPIRIT HILLS SUBDIVISION MT0004208 | BOZEMAN | 230 | — | — | No result above limit |
| CLANCY WATER DEPT MT0000177 | CLANCY | 230 | — | — | No result above limit |
| NEIHART TOWN OF MT0000298 | NEIHART | 229 | — | — | No result above limit |
| GRASS LAND ESTATES MT0004448 | EAST HELENA | 228 | — | — | No result above limit |
| TURTLE LAKE WATER SYSTEM 083090032 | PABLO | 225 | — | — | No result above limit |
| SAGE CREEK CO WATER DISTRICT MT0003150 | CHESTER | 225 | — | — | No result above limit |
| LAST STARR HOMES (INACTIVE) 083090006 | BROWNING | 225 | — | — | No result above limit |
| CRYSTAL SPRINGS WATER SYSTEM MT0003986 | BILLINGS | 225 | — | — | No result above limit |
| HOLMBERG VILLAGE ESTATES MT0004190 | HELENA | 225 | — | — | No result above limit |
| ELMO WATER SYSTEM 083090024 | PABLO | 220 | — | — | No result above limit |
| THE NINES SUBDIVISION MT0004989 | BILLINGS | 220 | — | — | No result above limit |
| HOLLYWOOD HEIGHTS TRAILER PARK LLC MT0000454 | MISSOULA | 220 | — | — | No result above limit |
| MNIHNAPA WATER SYSTEM 083090047 | HARLEM | 220 | — | — | No result above limit |
| SALISH SHORES TRADE WINDS COMM VILLAGE MT0003911 | THOMPSON FALLS | 215 | — | — | No result above limit |
| CIRCLE H WATER INC MT0004446 | MISSOULA | 215 | — | — | No result above limit |
| GLACIER POINT HO AND WUA MT0004559 | HELENA | 210 | — | — | No result above limit |
| WAGON WHEEL TRAILER VILLAGE MT0000379 | MISSOULA | 210 | — | — | No result above limit |
| ASHLAND COMMUNITY WATER SYSTEM 083090061 | LAME DEER | 210 | — | — | No result above limit |
| STOCKETT WATER AND SEWER DIST MT0000579 | STOCKETT | 210 | — | — | No result above limit |
| FLATHEAD COUNTY WATER DIST 101 MT0000184 | COLUMBIA FALLS | 210 | — | — | No result above limit |
| EAST GATE WORK CAMP MT0003440 | GARDINER | 208 | — | — | No result above limit |
| WILDERNESS PLATEAU WATER AND SEWER DIST MT0002985 | TROY | 208 | — | — | No result above limit |
| GOODAN KEIL CO WATER DIST MT0002393 | MISSOULA | 207 | — | — | No result above limit |
| HAPPY VALLEY WATER DIST B KSPL MT0001984 | COLUMBIA FALLS | 207 | — | — | No result above limit |
| POWER TETON COUNTY WATER DIST MT0000311 | POWER | 205 | — | — | No result above limit |
| BRIDGE CREEK ESTATES SUBDIVISION MT0004555 | EAST HELENA | 205 | — | — | No result above limit |
| BELFRY CARBON CO WATER AND SEWER DIST MT0000460 | BELFRY | 205 | — | — | No result above limit |
| LION MOUNTAIN HOMEOWNERS ASSOC MT0000392 | COLUMBIA FALLS | 204 | — | — | No result above limit |
| JETTE MEADOWS LAKE CO W&S DIST PHASE II MT0003101 | POLSON | 200 | — | — | No result above limit |
| BABB WATER USERS ASSN MT0000019 | BABB | 200 | — | — | No result above limit |
| LOMA COUNTY WATER DISTRICT MT0002669 | LOMA | 200 | — | — | No result above limit |
| SOUTH WIND WATER AND SEWER DISTRICT MT0000025 | GREAT FALLS | 200 | — | — | No result above limit |
| MISSION MEADOWS RV CAMPSITE PARK, INC MT0000621 | MISSOULA | 200 | — | — | No result above limit |
| OAK RIDGE ESTATES MT0004250 | BILLINGS | 200 | — | — | No result above limit |
| BEARCREEK MUNICIPAL WATER SYS MT0000063 | RED LODGE | 200 | — | — | No result above limit |
| KREMLIN WATER USERS MT0003121 | HINGHAM | 200 | — | — | No result above limit |
| LIBBY DAM PROJECT SEATTLE DIST MT0000273 | LIBBY | 200 | — | — | No result above limit |
| GALATA COUNTY WATER DISTRICT MT0000009 | GALATA | 200 | — | — | No result above limit |
| BASIN COUNTY WATER AND SEWER DIST MT0000014 | BASIN | 200 | — | — | No result above limit |
| AQUA GOAT LLC MT0005161 | BILLINGS | 200 | — | — | No result above limit |
| DIXON, TOWN OF 083090034 | PABLO | 200 | — | — | No result above limit |
| PARADISE WATER DISTRICT MT0000385 | PARADISE | 200 | — | — | No result above limit |
| KOUNTZ TRAILER COURT MT0001788 | BOZEMAN | 200 | — | — | No result above limit |
| GO 2 U WATER DELIVERY MT0004754 | LAUREL | 200 | — | — | No result above limit |
| BROADVIEW TOWN OF MT0000167 | BROADVIEW | 200 | — | — | No result above limit |
| INDIAN WATER USERS ASSOC. MT0000207 | ELMO | 200 | — | — | No result above limit |
| EAST GLACIER PARK CO MT0000205 | EAST GLACIER | 200 | — | — | No result above limit |
| RED WHEEL TRAILER COURT MT0000024 | GREAT FALLS | 200 | — | — | No result above limit |
| TRACY WATER USERS CORP MT0000345 | SAND COULEE | 200 | — | — | No result above limit |
| VALLEY GARDEN GOLF VILLAGE HOA MT0003597 | ENNIS | 195 | — | — | No result above limit |
| MUDDY CLUSTER WATER SYSTEM 083090065 | LAME DEER | 195 | — | — | No result above limit |
| GREENWOOD VILLAGE RV AND MHP MT0003602 | KALISPELL | 195 | — | — | No result above limit |
| TWO BUTTES WATER USERS ASSN MT0000219 | FORT SHAW | 195 | — | — | No result above limit |
| PINE HILLS YOUTH CORRECT FACIL MT0000292 | MILES CITY | 193 | — | — | No result above limit |
| STAR MOBILE HOME PARK MT0000034 | BOZEMAN | 190 | — | — | No result above limit |
| SUNSET WEST DEVELOPMENT MT0000383 | MISSOULA | 190 | — | — | No result above limit |
| STILL RIVER ESTATES SUBDIVISION MT0005118 | BILLINGS | 188 | — | — | No result above limit |
| WINNETT TOWN OF MT0000364 | WINNETT | 187 | — | — | No result above limit |
| PELE PARK MT0000593 | EAST HELENA | 186 | — | — | No result above limit |
| MOORE TOWN OF MT0000295 | MOORE | 186 | — | — | No result above limit |
| RAMSHORN VIEW ESTATES MT0004035 | TOWNSEND | 185 | — | — | No result above limit |
| HINGHAM WATER USERS MT0003124 | HINGHAM | 181 | — | — | No result above limit |
| TAMARACK WOODS HOA LAKESIDE MT0003393 | KALISPELL | 180 | — | — | No result above limit |
| BAIR CLARK PROPERTIES, LLC MT0000374 | MISSOULA | 180 | — | — | No result above limit |
| GOLDEN AGE VILLAGE MT0003313 | EMIGRANT | 180 | — | — | No result above limit |
| SANGSTER WATER HAULING LLC MT0003551 | GREAT FALLS | 180 | — | — | No result above limit |
| SACO TOWN OF MT0000323 | SACO | 180 | — | — | No result above limit |
| DAVIS MEADOW VILLAGE MT0003990 | EAST HELENA | 180 | — | — | No result above limit |
| CHERRY CREEK WUA GLASGOW MT0000228 | GLASGOW | 180 | — | — | No result above limit |
| RICHEY TOWN OF MT0000316 | RICHEY | 180 | — | — | No result above limit |
| SAND COULEE WATER USERS DISTRICT MT0000325 | SAND COULEE | 180 | — | — | No result above limit |
| INDIAN WATER USERS ASSN MT0000324 | SAINT IGNATIUS | 180 | — | — | No result above limit |
| CASITAS DEL MESA MHP MT0002738 | GLENDIVE | 180 | — | — | No result above limit |
| ELK MEADOWS RANCHETTES MT0000632 | HUSON | 175 | — | — | No result above limit |
| FISCHER'S TRAILER COURT MT0000026 | GREAT FALLS | 175 | — | — | No result above limit |
| MOBILE CITY TRAILER COURT MT0000646 | MISSOULA | 175 | — | — | No result above limit |
| TOWN VIEW ESTATES WUA INC MT0002172 | HELENA | 175 | — | — | No result above limit |
| FOREST PARK TRAILER COURT #2 MT0001367 | BOZEMAN | 175 | — | — | No result above limit |
| KOOTENAI CREEK VILLAGE MT0004241 | HAMILTON | 175 | — | — | No result above limit |
| MOUNTAIN HERITAGE WATER SYSTEM MT0002873 | HELENA | 175 | — | — | No result above limit |
| CINNABAR THE MT0001557 | GARDINER | 175 | — | — | No result above limit |
| WESTBY TOWN OF MT0000355 | WESTBY | 172 | — | — | No result above limit |
| AZURE VS GW 083090071 | BOX ELDER | 171 | — | — | No result above limit |
| TEN MILE-PLEANSANT VALLEY WUA MT0002035 | HELENA | 170 | — | — | No result above limit |
| MISSION HOUSING WATER SYSTEM 083090043 | HARLEM | 170 | — | — | No result above limit |
| MELSTONE TOWN OF MT0000290 | MELSTONE | 170 | — | — | No result above limit |
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