PFAS contamination data for 1,849 water systems in Wyoming, serving 758,238 people.
Wyoming follows federal EPA MCLs (PFOA/PFOS: 4 ppt).
WY follows federal EPA MCLs. PFAS monitoring at FE Warren AFB and other sites.
Free eligibility check — plus weekly MCL, deadline, and funding alerts for Wyoming.
| System | City | Population | PFOA (ppt) | PFOS (ppt) | Status |
|---|---|---|---|---|---|
| CHEYENNE BOARD OF PUBLIC UTILITIES WY5600011 | CHEYENNE | 64,165 | — | — | Compliant |
| CASPER, CITY OF WY5601415 | CASPER | 59,000 | — | — | Compliant |
| LARAMIE, CITY OF WY5600029 | LARAMIE | 32,395 | — | — | Compliant |
| GILLETTE, CITY OF WY5600019 | GILLETTE | 32,222 | — | — | Compliant |
| JACKSON, TOWN OF WY5600213 | JACKSON | 24,760 | — | — | Compliant |
| ROCK SPRINGS, CITY OF WY5601182 | ROCK SPRINGS | 24,000 | — | — | Compliant |
| SHERIDAN, CITY OF WY5600052 | SHERIDAN | 22,700 | — | — | Compliant |
| EVANSTON, CITY OF WY5600150 | EVANSTON | 12,000 | — | — | Compliant |
| GREEN RIVER, CITY OF WY5601181 | GREEN RIVER | 10,500 | — | — | Compliant |
| RIVERTON, CITY OF WY5600047 | RIVERTON | 10,330 | — | 7 | Exceeds |
| CODY, CITY OF WY5600207 | CODY | 10,224 | — | — | Compliant |
| SOUTH CHEYENNE WATER & SEWER DISTRICT WY5600239 | CHEYENNE | 10,000 | — | — | Compliant |
| RAWLINS WATER SUPPLY, CITY OF WY5600045 | RAWLINS | 9,006 | — | — | Compliant |
| YNP-OLD FAITHFUL WY5680085 | YELLOWSTONE | 7,675 | — | — | Compliant |
| LANDER, CITY OF WY5600176 | LANDER | 7,615 | — | — | Compliant |
| NORTHWEST RURAL WATER DISTRICT WY5601254 | CODY | 7,330 | — | — | Compliant |
| TORRINGTON MUNICIPAL WATER DEPT, CITY OF WY5600164 | TORRINGTON | 6,847 | — | — | Compliant |
| DOUGLAS, CITY OF WY5600137 | DOUGLAS | 6,400 | — | — | Compliant |
| POWELL, CITY OF WY5600042 | POWELL | 6,310 | — | — | Compliant |
| YNP - LAKE VILLAGE WY5680079 | YELLOWSTONE | 5,925 | — | — | Compliant |
| USAF F.E. WARREN AFB WY5680122 | F.E. WARREN AFB | 5,500 | — | — | Compliant |
| WORLAND UTILITIES COMMISSION WY5600197 | WORLAND | 5,487 | — | — | Compliant |
| GTNP-COLTER BAY VILLAGE WY5680095 | MOOSE | 4,514 | — | — | Compliant |
| BUFFALO, CITY OF WY5600005 | BUFFALO | 4,419 | — | — | Compliant |
| YNP-CANYON VILLAGE WY5680074 | YELLOWSTONE | 4,300 | — | — | Compliant |
| MILLS-WARDWELL JPB WY5600841 | MILLS | 4,150 | — | — | Compliant |
| MILLS, CITY OF WY5600036 | MILLS | 4,050 | — | — | Compliant |
| BROOKS WATER & SEWER DISTRICT WY5600070 | MILLS | 4,000 | — | — | Compliant |
| BAR NUNN, TOWN OF WY5600067 | BAR NUNN | 4,000 | — | — | Compliant |
| WHEATLAND, TOWN OF WY5600187 | WHEATLAND | 3,659 | — | — | Compliant |
| NEWCASTLE, CITY OF WY5600256 | NEWCASTLE | 3,595 | — | — | Compliant |
| FORT WASHAKIE 085690003 | FORT WASHAKIE | 3,520 | 9.3 | — | Exceeds |
| KEMMERER-DIAMONDVILLE JPB WY5600028 | KEMMERER | 3,348 | — | — | Compliant |
| GREYBULL, TOWN OF WY5600022 | GREYBULL | 3,260 | — | — | Compliant |
| ARAPAHOE COMM WATER SYSTEM 085690004 | ETHETE | 3,100 | — | — | Compliant |
| PARADISE VALLEY UTIL CO WY5600010 | CASPER | 3,000 | — | — | Compliant |
| THERMOPOLIS, TOWN OF WY5600056 | THERMOPOLIS | 2,775 | — | — | Compliant |
| EVANSVILLE, TOWN OF WY5600018 | CASPER | 2,728 | — | — | Compliant |
| YNP-MAMMOTH HOT SPRINGS WY5680092 | YELLOWSTONE NATIONAL PARK | 2,600 | — | — | Compliant |
| WRIGHT WATER & SEWER DISTRICT WY5600136 | WRIGHT | 2,500 | — | — | Compliant |
| GLENROCK, TOWN OF WY5600199 | GLENROCK | 2,466 | — | — | Compliant |
| LOVELL, TOWN OF WY5600031 | LOVELL | 2,360 | — | — | Compliant |
| LYMAN, TOWN OF WY5600033 | LYMAN | 2,203 | — | — | Compliant |
| STAR VALLEY RANCH, TOWN OF WY5600287 | STAR VALLEY RANCH | 2,030 | — | — | Compliant |
| LITTLE AMERICA HOTELS & RESORTS, INC- WY WY5600097 | LITTLE AMERICA | 2,004 | — | — | Compliant |
| AFTON, BOARD OF PUB UTILITIES WY5600002 | AFTON | 2,000 | — | — | Compliant |
| ETHETE WATER SYSTEM 085690002 | FORT WASHAKIE | 1,950 | — | — | Compliant |
| LEISURE VALLEY INC/ STAR VALLEY RV PARK WY5601471 | GROVER | 1,910 | — | — | Compliant |
| PINEDALE MUNICIPAL WS WY5600041 | PINEDALE | 1,900 | — | — | Compliant |
| DUBOIS, TOWN OF WY5600177 | DUBOIS | 1,870 | — | — | Compliant |
| GTNP-JACKSON LAKE LODGE WY5680103 | MOOSE | 1,830 | — | — | Compliant |
| BRIDGER VALLEY JOINT POWERS BOARD WY5600757 | MOUNTAIN VIEW | 1,728 | — | — | Compliant |
| SARATOGA, TOWN OF WY5600061 | SARATOGA | 1,720 | — | — | Compliant |
| VISTA WEST WATER COMPANY WY5600069 | CASPER | 1,600 | — | — | Compliant |
| LUSK, TOWN OF WY5600032 | LUSK | 1,576 | — | — | Compliant |
| PIONEER WATER & SEWER DISTRICT WY5600828 | CASPER | 1,500 | — | — | Compliant |
| RAFTER J SUBDIVISION HOA WY5600822 | WILSON | 1,500 | — | — | Compliant |
| ASPENS PINES W&S DISTRICT WY5600220 | WILSON | 1,400 | — | — | Compliant |
| ALPINE, TOWN OF WY5600156 | ALPINE | 1,300 | — | — | Compliant |
| RANCHESTER, TOWN OF WY5600044 | RANCHESTER | 1,297 | — | — | Compliant |
| SUNDANCE, CITY OF WY5600055 | SUNDANCE | 1,279 | — | — | Compliant |
| BASIN, TOWN OF WY5600004 | BASIN | 1,250 | — | — | Compliant |
| MOUNTAIN VIEW, TOWN OF WY5600847 | MOUNTAIN VIEW | 1,250 | — | — | Compliant |
| PACIFIC POWER & LIGHT CO. WY5600046 | ROCK SPRINGS | 1,200 | — | — | Compliant |
| COTTONWOOD ESTATES WTR SUPPLY WY5600803 | LARAMIE | 1,200 | — | — | Compliant |
| BEAR RIVER REGIONAL JOINT POWERS WY5601019 | BEAR RIVER | 1,200 | — | — | Compliant |
| GUERNSEY, TOWN OF WY5600023 | GUERNSEY | 1,157 | — | — | Compliant |
| UPTON, TOWN OF WY5600140 | UPTON | 1,100 | — | — | Compliant |
| BURNS BOARD OF PUBLIC UTILITIES WY5600188 | BURNS | 1,024 | — | — | Compliant |
| MOORCROFT, TOWN OF WY5600037 | MOORCROFT | 1,009 | — | — | Compliant |
| PIONEER MOBILE HOME PARK WY5601173 | ROCK SPRINGS | 1,000 | — | — | Compliant |
| CHEVRON CRTR CK BACHELOR HOUS. WY5600781 | EVANSTON | 1,000 | — | — | Compliant |
| WASHAKIE RURAL WATER SYSTEM WY5601523 | WORLAND | 990 | — | — | Compliant |
| CLEARVIEW I&S DISTRICT WY5600091 | ROCK SPRINGS | 930 | — | — | Compliant |
| TETON VILLAGE WATER & SEWER DISTRICT WY5600218 | TETON VILLAGE | 906 | — | — | Compliant |
| SOUTH BIG HORN COUNTY JPB WY5601454 | WORLAND | 900 | — | — | Compliant |
| SUNBURST WATER & SEWER DIST. WY5600116 | GILLETTE | 900 | — | — | Compliant |
| MELODY RANCH IMPROVEMENT & SERVICE DIST. WY5601440 | JACKSON | 900 | — | — | Compliant |
| MARBLETON, TOWN OF WY5600223 | MARBLETON | 861 | — | — | Compliant |
| HANNA, TOWN OF WY5600025 | HANNA | 841 | — | — | Compliant |
| DAYTON, TOWN OF WY5600202 | DAYTON | 824 | — | — | Compliant |
| COWLEY, TOWN OF WY5600206 | COWLEY | 800 | — | — | Compliant |
| BEDFORD WATER & SEWER DISTRICT WY5600006 | BEDFORD | 750 | — | — | Compliant |
| GREATER SMOOT W&S DISTRICT WY5601397 | SMOOT | 720 | — | — | Compliant |
| DESERT VILLAGE WY5601180 | ROCK SPRINGS | 700 | — | — | Compliant |
| VETERANS ADMINISTRATION MEDICAL CENTER WY5680001 | SHERIDAN | 685 | — | — | Compliant |
| ARAPAHOE INDUSTRIAL PARK 085690008 | FORT WASHAKIE | 650 | — | — | Compliant |
| BIG COUNTRY ESTATES WY5601271 | CHEYENNE | 615 | — | — | Compliant |
| BLACK THUNDER COAL MINE WY5600360 | WRIGHT | 600 | — | — | Compliant |
| SALT CREEK WATER DISTRICT WY5600133 | NEWCASTLE | 600 | — | — | Compliant |
| BYRON, TOWN OF WY5600008 | BYRON | 593 | — | — | Compliant |
| HIGH MEADOW RANCH WY5601569 | PINEDALE | 580 | — | — | Compliant |
| JAMESTOWN-RIO VISTA W&S DISTRICT WY5600810 | GREEN RIVER | 560 | — | — | Compliant |
| RAWHIDE VILLAGE #3 WY5600773 | GILLETTE | 550 | — | — | Compliant |
| COKEVILLE, TOWN OF WY5600015 | COKEVILLE | 535 | — | — | Compliant |
| FARSON EDEN SCHOOL WY5600113 | ROCK SPRINGS | 530 | — | — | Compliant |
| SHOSHONI, TOWN OF WY5600053 | SHOSHONI | 515 | — | — | Compliant |
| WEST WINDS MOBILE HOME COMM. WY5601380 | CHEYENNE | 503 | — | — | Compliant |
| J AND J MOBILE HOME PARK WY5600130 | GILLETTE | 500 | — | — | Compliant |
| WAMSUTTER, TOWN OF WY5600105 | WAMSUTTER | 500 | — | — | Compliant |
| SOUTH WORLAND WATER USERS CORPORATION WY5600235 | WORLAND | 490 | — | — | Compliant |
| SOUTH LARAMIE W&S DISTRICT WY5601393 | LARAMIE | 490 | — | — | Compliant |
| LINGLE, TOWN OF WY5600030 | LINGLE | 486 | — | — | Compliant |
| SUNNY MEADOWS VILLAGE WY5601289 | LARAMIE | 485 | — | — | Compliant |
| B&R MOBILE HOME VILLAGE WY5601211 | ROCK SPRINGS | 475 | — | — | Compliant |
| NORDIC RANCHES WATER, LLC. WY5601418 | ETNA | 465 | — | — | Compliant |
| HUDSON, TOWN OF WY5600183 | HUDSON | 460 | — | — | Compliant |
| FOOTHILLS VILLAGE MOBILE HOME PARK WY5601202 | ROCK SPRINGS | 450 | — | — | Compliant |
| SOUTH TORRINGTON WATER DISTRICT WY5600168 | TORRINGTON | 450 | — | — | Compliant |
| ROLLING HILLS, TOWN OF WY5600782 | ROLLING HILLS | 450 | — | — | Compliant |
| FORT BRIDGER WATER & SEWER WY5600775 | FT. BRIDGER | 450 | — | — | Compliant |
| ENCAMPMENT, TOWN OF WY5600060 | ENCAMPMENT | 450 | — | — | Compliant |
| BLACKS FORK WATER & SEWER DIST WY5601094 | LYMAN | 450 | — | — | Compliant |
| SOUTH THERMOPOLIS W&S DISTRICT WY5601083 | THERMOPOLIS | 450 | — | — | Compliant |
| LA GRANGE, TOWN OF WY5600788 | LA GRANGE | 448 | — | — | Compliant |
| BIG PINEY, TOWN OF WY5600007 | BIG PINEY | 445 | — | — | Compliant |
| SINCLAIR, TOWN OF WY5600054 | SINCLAIR | 433 | — | — | Compliant |
| HULETT, TOWN OF WY5600026 | HULETT | 420 | — | — | Compliant |
| MIDWEST, TOWN OF WY5600201 | MIDWEST | 410 | — | — | Compliant |
| TEN SLEEP, TOWN OF WY5600203 | TEN SLEEP | 400 | — | — | Compliant |
| DOWNER NEIGHBORHOOD I&S DISTRICT WY5601537 | SHERIDAN | 400 | — | — | Compliant |
| BAGGS, TOWN OF WY5600058 | BAGGS | 400 | — | — | Compliant |
| SPRING CREEK IMPROVEMENT DISTRICT WY5600811 | JACKSON | 400 | — | — | Compliant |
| ROYAL GROVE SUBDIVISION WY5600834 | GILLETTE | 400 | — | — | Compliant |
| SOLDIER CREEK WATER COMPANY WY5600244 | SHERIDAN | 400 | — | — | Compliant |
| ASPENS MHP WY5601330 | EVANSVILLE | 400 | — | — | Compliant |
| NINE-MILE WATER & SEWER DISTRICT WY5601533 | LARAMIE | 380 | — | — | Compliant |
| GREEN ACRES MOBILE HOME PARK WY5600238 | POWELL | 375 | — | — | Compliant |
| NATRONA COUNTY INT'L AIRPORT WY5600079 | CASPER | 375 | — | — | Compliant |
| LEWIS MOBILE HOME PARK WY5601175 | ROCK SPRINGS | 370 | — | — | Compliant |
| THAYNE, TOWN OF WY5600159 | THAYNE | 366 | — | — | Compliant |
| RIMROCK WATER COMPANY LLC SD4602220 | ALADDIN | 365 | — | — | Compliant |
| LINDLEY PARK, LLC WY5600820 | EVANSTON | 362 | — | — | Compliant |
| COUNTRYSIDE WATER USERS, INC. WY5600192 | GILLETTE | 360 | — | — | Compliant |
| LUCERNE WATER AND SEWER DIST. WY5600935 | THERMOPOLIS | 350 | — | — | Compliant |
| FEDERAL-AMERICAN PARTNERS WY5600107 | RIVERTON | 350 | — | — | Compliant |
| BURLINGTON, TOWN OF WY5601098 | BURLINGTON | 348 | — | — | Compliant |
| LA BARGE, TOWN OF WY5600222 | LA BARGE | 347 | — | — | Compliant |
| ALCOVA ACRES INVESTMENT CORP. WY5600071 | CASPER | 340 | — | — | Compliant |
| SUPERIOR, TOWN OF WY5600092 | SUPERIOR | 336 | — | — | Compliant |
| SNAKE RIVER SPORTING CLUB WY5601699 | WILSON | 332 | — | — | Compliant |
| HORIZON MHP WY5600088 | ROCK SPRINGS | 330 | — | — | Compliant |
| RIVERSIDE MOBILE HOME COURT WY5601641 | CASPER | 330 | — | — | Compliant |
| MEETEETSE, TOWN OF WY5600035 | MEETEETSE | 327 | — | — | Compliant |
| CIMMARON VILLAGE WY5601315 | CHEYENNE | 327 | — | — | Compliant |
| PINE BLUFF COURT NY0600901 | JACKSON | 312 | — | — | Compliant |
| PARKWAY MHP & RV CG WY5601386 | CODY | 311 | — | — | Compliant |
| FREEDOM W&S DISTRICT WY5600158 | GROVER | 307 | — | — | Compliant |
| MOBILE CORRALS/STALLS COURT WY5601203 | ROCK SPRINGS | 300 | — | — | Compliant |
| RIVERSIDE ADDITION WATER CO WY5600633 | LARAMIE | 300 | — | — | Compliant |
| RIO VISTA HOMESITES WATER SERV WY5600115 | GREEN RIVER | 300 | — | — | Compliant |
| GREEN ACRES VILLAGE WY5600862 | CODY | 300 | — | — | Compliant |
| ELMO, TOWN OF WY5600224 | HANNA | 300 | — | — | Compliant |
| JUBYS MOBILE HOME PARK WY5601496 | CODY | 300 | — | — | Compliant |
| GARDENS NORTH HOMEOWNERS ASSOCIATION WY5600774 | PAVILLION | 300 | — | — | Compliant |
| NORTH AFTON WATER & SEWER WY5600155 | AFTON | 300 | — | — | Compliant |
| GLENDO, TOWN OF WY5600231 | GLENDO | 289 | — | — | Compliant |
| AFFORDABLE RES COMM/CHEYENNE WY5600057 | CHEYENNE | 280 | — | — | Compliant |
| SAGEBRUSH DEVELOPMENT WY5600821 | GILLETTE | 275 | — | — | Compliant |
| WHITE MOUNTAIN MOBILE HOME PARK WY5601206 | ROCK SPRINGS | 270 | — | — | Compliant |
| BAR Y ESTATES/GROS VENTRE WEST WTR DISTS WY5600976 | WILSON | 270 | — | — | Compliant |
| COLLINS HEIGHTS SUBDIVISION WY5600129 | GILLETTE | 265 | — | — | Compliant |
| KAYCEE, TOWN OF WY5600196 | KAYCEE | 263 | — | — | Compliant |
| ORCHARD VALLEY WATER COMPANY WY5600012 | CHEYENNE | 260 | — | — | Compliant |
| SKYLINE RANCH I&S DISTRICT WY5600217 | WILSON | 260 | — | — | Compliant |
| RIVERSIDE TRAILER COURT WY5600072 | CASPER | 260 | — | — | Compliant |
| EAST THERMOPOLIS, TOWN OF WY5600226 | EAST THERMOPOLIS | 254 | — | — | Compliant |
| GROVER WATER & SEWER DISTRICT WY5600160 | GROVER | 252 | — | — | Compliant |
| CARSON MOB HOME PK- VIP REALTY WY5600117 | GILLETTE | 251 | — | — | Compliant |
| WYOMING STATE HOSPITAL WY5600104 | EVANSTON | 250 | — | — | Compliant |
| OSMOND PIPELINE CO WY5600154 | AFTON | 250 | — | — | Compliant |
| WRANGLER ESTATES WY5601474 | GILLETTE | 250 | — | — | Compliant |
| OSAGE WATER DISTRICT WY5600038 | OSAGE | 240 | — | — | Compliant |
| AIR BASE ACRES I&S DISTRICT WY5600080 | CASPER | 236 | — | — | Compliant |
| FORT LARAMIE, TOWN OF WY5600185 | FORT LARAMIE | 230 | — | — | Compliant |
| PAVILLION, TOWN OF WY5600039 | PAVILLION | 230 | — | — | Compliant |
| CF&I STEEL CORP, SUNRISE MINE WY5600024 | HARTVILLE | 230 | — | — | Compliant |
| FAIRVIEW WATER & SEWER DISTRICT WY5600166 | GROVER | 230 | — | — | Compliant |
| WEST END WATER DISTRICT WY5601032 | NEWCASTLE | 225 | — | — | Compliant |
| GTNP--MOOSE/BEAVER CREEK WY5680093 | MOOSE | 221 | — | — | Compliant |
| SUNRIDGE ESTATES WY5601225 | RIVERTON | 220 | — | — | Compliant |
| RIDGEWATER IMPROVEMENT DISTRICT WY5600285 | DOUGLAS | 218 | — | — | Compliant |
| ROCK RIVER, TOWN OF WY5600048 | ROCK RIVER | 211 | — | — | Compliant |
| FISH CREEK IMPROVEMENT AND SERVICE DIST WY5601473 | WILSON | 210 | — | — | Compliant |
| BOULDER FLATS 085690005 | LANDER | 210 | — | — | Compliant |
| GREENWAY TRAILER PARK WY5601310 | CHEYENNE | 200 | — | — | Compliant |
| MEDICINE WATERS VILLAGE WY5601741 | RAWLINS | 200 | — | — | Compliant |
| NORTH ALPINE I&S DISTRICT WY5601021 | ALPINE | 200 | — | — | Compliant |
| THIRTY-THREE MILE ROAD I&S DISTRICT WY5601579 | MILLS | 200 | — | — | Compliant |
| JADE MHC WY5600181 | RIVERTON | 200 | — | — | Compliant |
| TRADEWINDS TRAILER PARK WY5600791 | CASPER | 200 | — | — | Compliant |
| CHUGWATER, TOWN OF WY5600200 | CHUGWATER | 200 | — | — | Compliant |
| OSAGE WATER DISTRICT WY5601429 | OSAGE | 200 | — | — | Compliant |
| GROS VENTRE UTILITY WY5600027 | JACKSON | 200 | — | — | Compliant |
| B&K MOBILE HOME PARK WY5600180 | PAVILLION | 200 | — | — | Compliant |
| COUNTRY CLUB MOBILE VILLAGE WY5601179 | ROCK SPRINGS | 200 | — | — | Compliant |
| POISON SPIDER I&S DISTRICT WY5600073 | CASPER | 200 | — | — | Compliant |
| EDGERTON, TOWN OF WY5600017 | EDGERTON | 195 | — | — | Compliant |
| VALLEY VISTA ESTATES ID7410036 | JACKSON | 192 | — | — | Compliant |
| ELK MOUNTAIN, TOWN OF WY5600065 | ELK MOUNTAIN | 191 | — | — | Compliant |
| LAKESIDE PROPERTIES INC WY5600118 | GILLETTE | 189 | — | — | Compliant |
| MEDICINE BOW, TOWN OF WY5600034 | MEDICINE BOW | 189 | — | — | Compliant |
| WYOMING HONOR FARM WY5601052 | RIVERTON | 186 | — | — | Compliant |
| ALBIN, TOWN OF WY5600189 | ALBIN | 181 | — | — | Compliant |
| ROCKING H MOBILE HOME PARK WY5600799 | CODY | 180 | — | — | Compliant |
| RANCHO BRIDGER MOBILE HOME PK WY5601242 | ROCK SPRINGS | 177 | — | — | Compliant |
| DEAVER MUNICIPAL WATER SYSTEM WY5600016 | DEAVER | 176 | — | — | Compliant |
| H&G MOBILE HOME PARK WY5600268 | CHEYENNE | 175 | — | — | Compliant |
| HYLAND MOBILE HOME PARK WY5600267 | CHEYENNE | 174 | — | — | Compliant |
| Y-O INVESTMENTS, INC. WY5600777 | JACKSON | 173 | — | — | Compliant |
| LEX MOBILE HOME PARK WY5601742 | CASPER | 172 | — | — | Compliant |
| LEE'S MOBILE HOME PARK WY5601281 | LARAMIE | 170 | — | — | Compliant |
| MOUNTAIN VIEW MOBILE HOME VILL WY5600089 | ROCK SPRINGS | 165 | — | — | Compliant |
| DOUGLAS KOA CG & PINE MEADOWS MHP WY5600247 | DOUGLAS | 165 | — | — | Compliant |
| RAHONCE TRAILER COURT WY5601207 | GREEN RIVER | 165 | — | — | Compliant |
| MOUNTAIN VIEW ACRES WY5600182 | PAVILLION | 165 | — | — | Compliant |
| FRANNIE, TOWN OF WY5600210 | FRANNIE | 160 | — | — | Compliant |
| GROS VENTRE NORTH HOA WY5601357 | WILSON | 160 | — | — | Compliant |
| COOPER SUBDIVISION WATER SYS. WY5600928 | MIDWEST | 160 | — | — | Compliant |
| SQUAW CREEK WATER DISTRICT WY5600737 | WILSON | 160 | — | — | Compliant |
| ENGLEWOOD VILLAGE MHP WY5601304 | CHEYENNE | 152 | — | — | Compliant |
| A & T TRAILER PARK WY5600755 | RIVERTON | 150 | — | — | Compliant |
| CENTENNIAL WATER AND SEWER DISTRICT WY5601232 | CENTENNIAL | 150 | — | — | Compliant |
| B BAR B MOBILE HOME PARK WY5601276 | LARAMIE | 150 | — | — | Compliant |
| COLORADO INTERSTATE GAS CO WY5600100 | ROCK SPRINGS | 150 | — | — | Compliant |
| HUTTON HEIGHTS TRAILER PARK WY5601172 | GREEN RIVER | 150 | — | — | Compliant |
| MOBILE CORRALS COURT WY5601204 | ROCK SPRINGS | 150 | — | — | Compliant |
| CANYON COURT MOBILE HOME PARK WY5601177 | ROCK SPRINGS | 150 | — | — | Compliant |
| W-K MOBILE HOME COURT WY5601178 | ROCK SPRINGS | 150 | — | — | Compliant |
| LUCKY MC MINE-PATHFINDER MINES WY5600108 | RIVERTON | 150 | — | — | Compliant |
| EL RANCHO TRAILER COURT WY5601212 | ROCK SPRINGS | 150 | — | — | Compliant |
| SANDY LAKE ESTATES I&S DISTRICT WY5601581 | CASPER | 150 | — | — | Compliant |
| MARK III TRAILER HOME PARK WY5600380 | FT BRIDGER | 150 | — | — | Compliant |
| EVANS MOBILE HOME COURT WY5600215 | WILSON | 150 | — | — | Compliant |
| INDIAN PAINTBRUSH WATER DISTRICT WY5600758 | WILSON | 150 | — | — | Compliant |
| RANCHO MOBILE HOME PARK WY5600962 | CASPER | 150 | — | — | Compliant |
| SOUTH END WATER USERS S&I DISTRICT WY5600970 | LOVELL | 150 | — | — | Compliant |
| FIRST FIKE SUBDIVISION WY5600194 | PAVILLION | 150 | — | — | Compliant |
| CAMBRIA I&S DISTRICT WY5601028 | NEWCASTLE | 148 | — | — | Compliant |
| WATER UNLIMITED, INCORPORATED WY5600132 | NEWCASTLE | 144 | — | — | Compliant |
| CLEARMONT, TOWN OF WY5600013 | CLEARMONT | 142 | — | — | Compliant |
| GRANGER, TOWN OF WY5600020 | GRANGER | 139 | — | — | Compliant |
| RED BUTTE VILL IMP DIST WY5600075 | CASPER | 136 | — | — | Compliant |
| FAIRWAY ESTATES WY5600918 | DOUGLAS | 135 | — | — | Compliant |
| ETNA WATER & SEWER DISTRICT WY5600157 | GROVER | 135 | — | — | Compliant |
| YODER, TOWN OF WY5600169 | YODER | 131 | — | — | Compliant |
| SEVEN MILE WATER & SEWER DISTRICT WY5601004 | LARAMIE | 130 | — | — | Compliant |
| SIERRA MADRE JPB WY5601332 | ENCAMPMENT | 130 | — | — | Compliant |
| PLEASANT VIEW WATER COMPANY WY5600082 | CASPER | 130 | — | — | Compliant |
| 7 ACRES MOBILE HOME COMM. WY5601286 | LARAMIE | 130 | — | — | Compliant |
| APOLLO MOBILE VILLAGE WY5601274 | CHEYENNE | 130 | — | — | Compliant |
| B BAR B TRAILER RANCHES WY5600254 | LARAMIE | 130 | — | — | Compliant |
| MILLER'S MOBILE VILLAGE WY5601395 | CHEYENNE | 130 | — | — | Compliant |
| SHELTERED VALLEY MHP WY5601170 | GREEN RIVER | 129 | — | — | Compliant |
| HIGHLAND RANCH ESTATES WY5600260 | CHEYENNE | 128 | — | — | Compliant |
| COUNTRYSIDE COURT WY5600756 | MILLS | 125 | — | — | Compliant |
| SOUTH RIVERSIDE ACRES WTR IMPR DIST WY5601072 | EVANSVILLE | 125 | — | — | Compliant |
| TOWN OF ALPINE - MEGA WELL WY5601748 | ALPINE | 120 | — | — | Compliant |
| HIDDEN VALLEY HOMEOWNERS ASSOC WY5600144 | GILLETTE | 120 | — | — | Compliant |
| TOWN & COUNTRY MOBILE PARK WY5600261 | CHEYENNE | 120 | — | — | Compliant |
| SHELL TOWN WATER IMPROVEMENT DISTRICT WY5600205 | SHELL | 120 | — | — | Compliant |
| MOUNTAIN SPRINGS TRL. CT. WY5600087 | ROCK SPRINGS | 120 | — | — | Compliant |
| TARGHEE TOWNE WATER DISTRICT WY5600787 | WILSON | 120 | — | — | Compliant |
| DIXON, TOWN OF WY5600059 | DIXON | 114 | — | — | Compliant |
| DESERT TRAILS MHP WY5601608 | GREEN RIVER | 112 | — | — | Compliant |
| CONTINENTAL ESTATES WY5600272 | CHEYENNE | 110 | — | — | Compliant |
| MANDERSON, TOWN OF WY5600204 | BASIN | 110 | — | — | Compliant |
| RED LANE DOMESTIC WATER, INC. WY5600232 | THERMOPOLIS | 110 | — | — | Compliant |
| MOUNTAIN VIEW MOBILE PARK WY5600282 | CHEYENNE | 108 | — | — | Compliant |
| HIDE-A-WAY MOBILE VILLAGE WY5600263 | CHEYENNE | 107 | — | — | Compliant |
| KEY LARGO UTILITIES TX0200401 | SHERIDAN | 105 | — | — | Compliant |
| OVERLAND TRAIL MHV WY5601284 | LARAMIE | 100 | — | — | Compliant |
| SHERIDAN AREA WATER SUPPLY JPB WY5601244 | SHERIDAN | 100 | — | — | Compliant |
| DILLMAN ESTATES WY5601248 | TORRINGTON | 100 | — | — | Compliant |
| HOME RANCH SUBDIVISION WY5600245 | SHERIDAN | 100 | — | — | Compliant |
| COLES TRAILER PARK WY5600270 | DOUGLAS | 100 | — | — | Compliant |
| HOT SPRINGS STATE PARK WY5600233 | THERMOPOLIS | 100 | — | — | Compliant |
| RIVERMEADOWS WATER DISTRICT WY5600786 | JACKSON | 100 | — | — | Compliant |
| OWL CREEK WATER DISTRICT WY5601673 | THERMOPOLIS | 100 | — | — | Compliant |
| TETON SHADOWS HOA WY5600724 | WILSON | 100 | — | — | Compliant |
| A & J MOBILE HOME PARK WY5600179 | PAVILLION | 100 | — | — | Compliant |
| STONE CREEK HOA WY5601586 | TORRINGTON | 100 | — | — | Compliant |
| TRAIL RIDGE WATER SYSTEM WY5601576 | GROVER | 100 | — | — | Compliant |
| VALLEY VIEW MUTUAL WATER COMPANY WY5601499 | WILSON | 100 | — | — | Compliant |
| ROUTH TRAILER COURT WY5601210 | ROCK SPRINGS | 100 | — | — | Compliant |
| WHITE MOUNTAIN TRAILER COURT WY5600095 | ROCK SPRINGS | 100 | — | — | Compliant |
| ROCKY POINT HOMEOWNERS ASSN WY5600259 | GILLETTE | 98 | — | — | Compliant |
| DICKINSON TRAILER COURT WY5600174 | RIVERTON | 98 | — | — | Compliant |
| MANVILLE, TOWN OF WY5600110 | MANVILLE | 97 | — | — | Compliant |
| RIVERS BEND TRAILER COURT WY5600212 | POWELL | 96 | — | — | Compliant |
| COTTONWOOD ACRES WY5601233 | TORRINGTON | 95 | — | — | Compliant |
| LARIAT MHP WY5601342 | MILLS | 95 | — | — | Compliant |
| CARPENTER W&S DISTRICT WY5601464 | CHEYENNE | 94 | — | — | Compliant |
| COTTONWOOD SUBDIVISION WY5600778 | AFTON | 92 | — | — | Compliant |
| JONES TRAILER COURT WY5600125 | GILLETTE | 90 | — | — | Compliant |
| RIVER MEADOWS ID7410048 | JACKSON | 90 | — | — | Compliant |
| STAGE STOP TEXACO WY5600094 | POINT OF ROCKS | 90 | — | — | Compliant |
| BRENTWOOD SUBDIVISION WY5600248 | RIVERTON | 90 | — | — | Compliant |
| NORTON TRAILER COURT WY5600763 | DOUGLAS | 90 | — | — | Compliant |
| TURNERVILLE WATER AND SEWER DISTRICT WY5601115 | GROVER | 90 | — | — | Compliant |
| ROLLING HILLS MHP WY5601351 | GILLETTE | 90 | — | — | Compliant |
| HI-COUNTRY WATER DISTRICT WY5600216 | WILSON | 85 | — | — | Compliant |
| MOUNTAIN VIEW ESTATES WY5600264 | CHEYENNE | 84 | — | — | Compliant |
| GREYBULL HEIGHTS WATER USERS WY5600230 | GREYBULL | 84 | — | — | Compliant |
| STAR VIEW ESTATES WY5600893 | AUBURN | 84 | — | — | Compliant |
| RAINTREE ESTATES WY5601100 | RIVERTON | 83 | — | — | Compliant |
| WESTVIEW VILLAGE WY5600864 | GROVER | 83 | — | — | Compliant |
| MEADOW'S MOBILE HOME PARK WY5601321 | CHEYENNE | 82 | — | — | Compliant |
| WADE'S MOBILE MANOR WY5601358 | LARAMIE | 81 | — | — | Compliant |
| PONDEROSA VILLAGE EAST WY5601317 | CHEYENNE | 80 | — | — | Compliant |
| MOUNTAIN SPRINGS TRL. CT. - B WY5600086 | ROCK SPRINGS | 80 | — | — | Compliant |
| MODERN TRAILER COURT WY5601215 | ROCK SPRINGS | 80 | — | — | Compliant |
| ALCOVA PWR PLANT FOREMAN WY5680148 | MILLS | 80 | — | — | Compliant |
| CANYON IMPROVEMENT & SERVICE DISTRICT WY5601632 | NEWCASTLE | 79 | — | — | Compliant |
| POINT OF ROCKS MERCANTILE WY5600093 | POINT OF ROCKS | 78 | — | — | Compliant |
| SADDLE BUTTE WATER SYSTEM WY5601401 | JACKSON | 75 | — | — | Compliant |
| CAREFREE ESTATES WY5600941 | GILLETTE | 75 | — | — | Compliant |
| TRAILS END MOBILE HOME PARK WY5600262 | CHEYENNE | 75 | — | — | Compliant |
| BLAKE'S MOBILE HOME RANCH WY5601277 | LARAMIE | 75 | — | — | Compliant |
| TRAILER COURT NORTH OF DOUGLAS WY5600234 | LEBANON | 75 | — | — | Compliant |
| ARTESIAN MOBILE HOME PARK WY5601311 | CHEYENNE | 75 | — | — | Compliant |
| WILSON PARK SUBDIVISION WY5601624 | WILSON | 75 | — | — | Compliant |
| SUNSET WEST TRAILER COURT WY5600098 | ROCK SPRINGS | 75 | — | — | Compliant |
| OUTLAW INN MOBILE COURT WY5601216 | ROCK SPRINGS | 72 | — | — | Compliant |
| STAR VALLEY TRAILER COURT WY5601017 | GROVER | 72 | — | — | Compliant |
| PLAINVIEW MOBILE HOME CT WY5601348 | CASPER | 72 | — | — | Compliant |
| BAIROIL, TOWN OF WY5600003 | BAIROIL | 71 | — | — | Compliant |
| SHANNON HEIGHTS WY5600265 | CHEYENNE | 70 | — | — | Compliant |
| SUNSET RANCH WATER DISTRICT WY5601633 | NEWCASTLE | 70 | — | — | Compliant |
| POTLATCH TRAILER COURT WY5600171 | TORRINGTON | 70 | — | — | Compliant |
| BIG W TRAILER COURT WY5600126 | GILLETTE | 70 | — | — | Compliant |
| WEBB CREEK RANCHES WY5600765 | CASPER | 70 | — | — | Compliant |
| SCHRANDTS MOBILE VILLA WY5600269 | DOUGLAS | 70 | — | — | Compliant |
| OLD WEST CABINS WY5601187 | WILSON | 70 | — | — | Compliant |
| ANTELOPE RIDGE HOA WY5601457 | LARAMIE | 70 | — | — | Compliant |
| WESTERN HILLS TRAILER COURT WY5600066 | RAWLINS | 69 | — | — | Compliant |
| COTTONWOOD COURT WY5600175 | KINNEAR | 68 | — | — | Compliant |
| OSTDIEK PRIVATE MOBILE HOME SB WY5601301 | CHEYENNE | 68 | — | — | Compliant |
| WARM SPRINGS WATER DISTRICT WY5600861 | DUBOIS | 68 | — | — | Compliant |
| BOTTOM'S MOBILE HOME PARK WY5600253 | LARAMIE | 66 | — | — | Compliant |
| HYATTVILLE S&I DISTRICT WY5600209 | HYATTVILLE | 66 | — | — | Compliant |
| REDD FOX PARK HOA WY5600805 | LANDER | 65 | — | — | Compliant |
| OPAL, TOWN OF WY5600835 | OPAL | 65 | — | — | Compliant |
| SOUTH PARK VILLAGE SUBDIVISION WY5600836 | WILSON | 65 | — | — | Compliant |
| WESTRIDGE II WY5600748 | GILLETTE | 65 | — | — | Compliant |
| GRAND VIEW IMPROVEMENT ASSOC. WY5600273 | CODY | 65 | — | — | Compliant |
| HARTVILLE, TOWN OF WY5600186 | HARTVILLE | 64 | — | — | Compliant |
| MT. VIEW MOBILE HOME COURT WY5601398 | SHERIDAN | 63 | — | — | Compliant |
| LAKEVIEW I&S DISTRICT WY5601494 | MILLS | 62 | — | — | Compliant |
| RESTWAY TRAVEL PARK WY5601292 | CHEYENNE | 62 | — | — | Compliant |
| WESTSIDE MOBILE HOME COURT WY5601167 | MILLS | 60 | — | — | Compliant |
| BROWNIES TRAILER COURT WY5600283 | POWELL | 60 | — | — | Compliant |
| SKYVIEW TRAILER COURT WY5601208 | ROCK SPRINGS | 60 | — | — | Compliant |
| INDIAN SPRINGS SUBDIVISION WY5601071 | CASPER | 60 | — | — | Compliant |
| CENTENNIAL VALLEY ESTATES WY5600161 | EVANSTON | 60 | — | — | Compliant |
| WAGON WHEEL MOBILE HOME PARK WY5600384 | FORT BRIDGER | 60 | — | — | Compliant |
| OFFE TRAILER COURT WY5601346 | GUERNSEY | 60 | — | — | Compliant |
| FARVIEW WATER AND SEWER DISTRICT WY5601546 | PAVILLION | 60 | — | — | Compliant |
| A & T TRAILER PARK WY5600387 | FORT BRIDGER | 60 | — | — | Compliant |
| FLAMING GORGE TRAILER COURT WY5601174 | GREEN RIVER | 60 | — | — | Compliant |
| COTTONWOOD WATER USERS ASSOC WY5600149 | GREEN RIVER | 60 | — | — | Compliant |
| BOTTOM'S MOBILE HOME PARK WY5601278 | LARAMIE | 60 | — | — | Compliant |
| CENTRAL MOBILE HOME PARK WY5601320 | CHEYENNE | 60 | — | — | Compliant |
| MILLER'S MOBILE HOME PARK WY5601381 | LANDER | 60 | — | — | Compliant |
| MISSILE MOBIL COURT WY5601300 | CHEYENNE | 60 | — | — | Compliant |
| WEST GROS VENTRE BUTTE WTR DIS WY5601448 | JACKSON | 58 | — | — | Compliant |
| CROSSED ARROWS WATER SYSEM WY5600938 | MEETEETSE | 56 | — | — | Compliant |
| BAR-B-BAR MEADOWS WY5601439 | WILSON | 55 | — | — | Compliant |
| COUNTRY ESTATES WTR & SWR DIST WY5600198 | GLENROCK | 53 | — | — | Compliant |
| GUERNSEY MHP WY5601335 | GUERNSEY | 52 | — | — | Compliant |
| C-V RANCHES (BOCES REG V) WY5600806 | WILSON | 51 | — | — | Compliant |
| L & L TRAILER COURT WY5600090 | ROCK SPRINGS | 50 | — | — | Compliant |
| BUFFALO VALLEY WATER DISTRICT WY5600435 | MORAN | 50 | — | — | Compliant |