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Wyoming Tap Water Quality

EPA water quality data for 150 community water systems serving 372,778+ people in Wyoming. Click any system to see violations, lead testing results, and a safety grade.

CHEYENNE BOARD OF PUBLIC UTILITIES CHEYENNE, WY · 64,165 people · Surface Water LARAMIE, CITY OF LARAMIE, WY · 32,395 people · Surface Water GILLETTE, CITY OF GILLETTE, WY · 32,222 people · Groundwater JACKSON, TOWN OF JACKSON, WY · 24,760 people · Groundwater SHERIDAN, CITY OF SHERIDAN, WY · 22,700 people · Surface Water EVANSTON, CITY OF EVANSTON, WY · 12,000 people · Surface Water RIVERTON, CITY OF RIVERTON, WY · 10,330 people · Surface Water CODY, CITY OF CODY, WY · 10,224 people · Surface Water Purchased SOUTH CHEYENNE WATER & SEWER DISTRICT CHEYENNE, WY · 10,000 people · Surface Water Purchased RAWLINS WATER SUPPLY, CITY OF RAWLINS, WY · 9,006 people · Surface Water LANDER, CITY OF LANDER, WY · 7,615 people · Surface Water TORRINGTON MUNICIPAL WATER DEPT, CITY OF TORRINGTON, WY · 6,847 people · Groundwater DOUGLAS, CITY OF DOUGLAS, WY · 6,400 people · Surface Water POWELL, CITY OF POWELL, WY · 6,310 people · Surface Water Purchased WORLAND UTILITIES COMMISSION WORLAND, WY · 5,487 people · Groundwater BUFFALO, CITY OF BUFFALO, WY · 4,419 people · Surface Water MILLS, CITY OF MILLS, WY · 4,050 people · GWUDI BAR NUNN, TOWN OF BAR NUNN, WY · 4,000 people · Surface Water Purchased WHEATLAND, TOWN OF WHEATLAND, WY · 3,659 people · Groundwater NEWCASTLE, CITY OF NEWCASTLE, WY · 3,595 people · Groundwater KEMMERER-DIAMONDVILLE JPB KEMMERER, WY · 3,348 people · Surface Water GREYBULL, TOWN OF GREYBULL, WY · 3,260 people · Groundwater THERMOPOLIS, TOWN OF THERMOPOLIS, WY · 2,775 people · Surface Water EVANSVILLE, TOWN OF CASPER, WY · 2,728 people · Surface Water WRIGHT WATER & SEWER DISTRICT WRIGHT, WY · 2,500 people · Groundwater GLENROCK, TOWN OF GLENROCK, WY · 2,466 people · Groundwater SLEEPY HOLLOW SUBDIVISION GILLETTE, WY · 2,400 people · Groundwater LOVELL, TOWN OF LOVELL, WY · 2,360 people · Surface Water Purchased LYMAN, TOWN OF LYMAN, WY · 2,203 people · GWUDI STAR VALLEY RANCH, TOWN OF STAR VALLEY RANCH, WY · 2,030 people · Groundwater LITTLE AMERICA HOTELS & RESORTS, INC- WY LITTLE AMERICA, WY · 2,004 people · Surface Water AFTON, BOARD OF PUB UTILITIES AFTON, WY · 2,000 people · Groundwater PINEDALE MUNICIPAL WS PINEDALE, WY · 1,900 people · Surface Water DUBOIS, TOWN OF DUBOIS, WY · 1,822 people · Groundwater BRIDGER VALLEY JOINT POWERS BOARD MOUNTAIN VIEW, WY · 1,728 people · Surface Water SARATOGA, TOWN OF SARATOGA, WY · 1,720 people · Groundwater VISTA WEST WATER COMPANY CASPER, WY · 1,600 people · Surface Water Purchased LUSK, TOWN OF LUSK, WY · 1,576 people · Groundwater RAFTER J SUBDIVISION HOA WILSON, WY · 1,500 people · Groundwater PIONEER WATER & SEWER DISTRICT CASPER, WY · 1,500 people · Surface Water Purchased ASPENS PINES W&S DISTRICT WILSON, WY · 1,400 people · Groundwater ALPINE, TOWN OF ALPINE, WY · 1,300 people · Groundwater RANCHESTER, TOWN OF RANCHESTER, WY · 1,297 people · Surface Water ANTELOPE VALLEY I&S DISTRICT (AVISD) GILLETTE, WY · 1,280 people · Groundwater SUNDANCE, CITY OF SUNDANCE, WY · 1,279 people · Groundwater BASIN, TOWN OF BASIN, WY · 1,250 people · Groundwater Purchased MOUNTAIN VIEW, TOWN OF MOUNTAIN VIEW, WY · 1,250 people · Surface Water Purchased PINE BLUFFS, TOWN OF FORT COLLINS, CO · 1,186 people · Groundwater GUERNSEY, TOWN OF GUERNSEY, WY · 1,157 people · Groundwater UPTON, TOWN OF UPTON, WY · 1,100 people · Groundwater WINCHESTER HILLS CHEYENNE, WY · 1,078 people · Groundwater BURNS BOARD OF PUBLIC UTILITIES BURNS, WY · 1,024 people · Groundwater MOORCROFT, TOWN OF MOORCROFT, WY · 1,009 people · Groundwater CLEARVIEW I&S DISTRICT ROCK SPRINGS, WY · 930 people · Surface Water Purchased TETON VILLAGE WATER & SEWER DISTRICT TETON VILLAGE, WY · 906 people · Groundwater MARBLETON, TOWN OF MARBLETON, WY · 861 people · Groundwater FOX PARK SUBDIVISION GILLETTE, WY · 843 people · Groundwater HANNA, TOWN OF HANNA, WY · 841 people · Surface Water DAYTON, TOWN OF DAYTON, WY · 824 people · Surface Water COWLEY, TOWN OF COWLEY, WY · 800 people · Groundwater BEDFORD WATER & SEWER DISTRICT BEDFORD, WY · 750 people · Groundwater HERITAGE VILLAGE SUBDIVISION GILLETTE, WY · 750 people · Groundwater SALT CREEK WATER DISTRICT NEWCASTLE, WY · 600 people · Groundwater BYRON, TOWN OF BYRON, WY · 593 people · Surface Water Purchased JAMESTOWN-RIO VISTA W&S DISTRICT GREEN RIVER, WY · 560 people · Surface Water Purchased COKEVILLE, TOWN OF COKEVILLE, WY · 535 people · Groundwater FARSON EDEN SCHOOL ROCK SPRINGS, WY · 530 people · Groundwater SHOSHONI, TOWN OF SHOSHONI, WY · 515 people · Groundwater WAMSUTTER, TOWN OF WAMSUTTER, WY · 500 people · Groundwater CRESTVIEW ESTATES SUBDIVISION GILLETTE, WY · 500 people · Groundwater PINE HAVEN, TOWN OF GILLETTE, WY · 498 people · Groundwater LINGLE, TOWN OF LINGLE, WY · 486 people · Groundwater HUDSON, TOWN OF HUDSON, WY · 460 people · GWUDI ENCAMPMENT, TOWN OF ENCAMPMENT, WY · 450 people · Surface Water SOUTH TORRINGTON WATER DISTRICT TORRINGTON, WY · 450 people · Groundwater Purchased ROLLING HILLS, TOWN OF ROLLING HILLS, WY · 450 people · Groundwater LA GRANGE, TOWN OF LA GRANGE, WY · 448 people · Groundwater BIG PINEY, TOWN OF BIG PINEY, WY · 445 people · Groundwater SINCLAIR, TOWN OF SINCLAIR, WY · 433 people · Surface Water Purchased HULETT, TOWN OF HULETT, WY · 420 people · Groundwater MIDWEST, TOWN OF MIDWEST, WY · 410 people · Surface Water Purchased MEANS IMPROVEMENT & SERVICE DISTRICT GILLETTE, WY · 410 people · Groundwater BAGGS, TOWN OF BAGGS, WY · 400 people · GWUDI TEN SLEEP, TOWN OF TEN SLEEP, WY · 400 people · Groundwater NICKELSON FARMS WATER COMPANY GILLETTE, WY · 400 people · Groundwater FREEDOM HILLS SUBDIVISION GILLETTE, WY · 400 people · Groundwater SPRING CREEK IMPROVEMENT DISTRICT JACKSON, WY · 400 people · Groundwater NATRONA COUNTY INT'L AIRPORT CASPER, WY · 375 people · Surface Water Purchased CV LARAMIE MHP, LLC CEDAREDGE, CO · 375 people · Groundwater GREEN ACRES MOBILE HOME PARK POWELL, WY · 375 people · Surface Water Purchased THAYNE, TOWN OF THAYNE, WY · 366 people · Groundwater LINDLEY PARK, LLC EVANSTON, WY · 362 people · Groundwater COUNTRYSIDE WATER USERS, INC. GILLETTE, WY · 360 people · Groundwater LUCERNE WATER AND SEWER DIST. THERMOPOLIS, WY · 350 people · Groundwater Purchased LA BARGE, TOWN OF LA BARGE, WY · 347 people · Surface Water SUPERIOR, TOWN OF SUPERIOR, WY · 336 people · Groundwater HORIZON MHP ROCK SPRINGS, WY · 330 people · Surface Water Purchased MEETEETSE, TOWN OF MEETEETSE, WY · 327 people · GWUDI FREEDOM W&S DISTRICT GROVER, WY · 307 people · Groundwater HIGHVIEW MFG MOBILE HOME COMMUNITY (MHC) GILLETTE, WY · 304 people · Groundwater Purchased GARDENS NORTH HOMEOWNERS ASSOCIATION PAVILLION, WY · 300 people · Groundwater GLENDO, TOWN OF GLENDO, WY · 289 people · Groundwater BAR Y ESTATES/GROS VENTRE WEST WTR DISTS WILSON, WY · 270 people · Groundwater GREEN VALLEY MHP FARMINGTON HILLS, MI · 265 people · Surface Water Purchased KAYCEE, TOWN OF KAYCEE, WY · 263 people · Groundwater ORCHARD VALLEY WATER COMPANY CHEYENNE, WY · 260 people · Groundwater SKYLINE RANCH I&S DISTRICT WILSON, WY · 260 people · Groundwater CEDAR HILLS WATER ASSOCIATION GILLETTE, WY · 258 people · Groundwater EAST THERMOPOLIS, TOWN OF EAST THERMOPOLIS, WY · 254 people · Surface Water Purchased GROVER WATER & SEWER DISTRICT GROVER, WY · 252 people · Groundwater OSMOND PIPELINE CO AFTON, WY · 250 people · Groundwater OSAGE WATER DISTRICT OSAGE, WY · 240 people · Groundwater AIR BASE ACRES I&S DISTRICT CASPER, WY · 236 people · Surface Water Purchased PAVILLION, TOWN OF PAVILLION, WY · 230 people · Groundwater FAIRVIEW WATER & SEWER DISTRICT GROVER, WY · 230 people · Groundwater FORT LARAMIE, TOWN OF FORT LARAMIE, WY · 230 people · Groundwater AMERICAN ROAD W&S DISTRICT GILLETTE, WY · 220 people · Groundwater RIDGEWATER IMPROVEMENT DISTRICT DOUGLAS, WY · 218 people · Surface Water Purchased ROCK RIVER, TOWN OF ROCK RIVER, WY · 211 people · Surface Water GROS VENTRE UTILITY JACKSON, WY · 200 people · Groundwater POISON SPIDER I&S DISTRICT CASPER, WY · 200 people · Surface Water Purchased B&K MOBILE HOME PARK PAVILLION, WY · 200 people · Groundwater JADE MHC RIVERTON, WY · 200 people · Groundwater CHUGWATER, TOWN OF CHUGWATER, WY · 200 people · Groundwater EDGERTON, TOWN OF EDGERTON, WY · 195 people · Surface Water Purchased FORCE ROAD JOINT POWERS BOARD GILLETTE, WY · 195 people · Groundwater ELK MOUNTAIN, TOWN OF ELK MOUNTAIN, WY · 191 people · Groundwater MEDICINE BOW, TOWN OF MEDICINE BOW, WY · 189 people · Groundwater ALBIN, TOWN OF ALBIN, WY · 181 people · Groundwater DEAVER MUNICIPAL WATER SYSTEM DEAVER, WY · 176 people · Surface Water Purchased PEOPLE`S IMPROVEMENT & SERVICE DISTRICT GILLETTE, WY · 176 people · Groundwater Y-O INVESTMENTS, INC. JACKSON, WY · 173 people · Groundwater MOUNTAIN VIEW ACRES PAVILLION, WY · 165 people · Groundwater DOUGLAS KOA CG & PINE MEADOWS MHP DOUGLAS, WY · 165 people · Groundwater FRANNIE, TOWN OF FRANNIE, WY · 160 people · Surface Water Purchased SQUAW CREEK WATER DISTRICT WILSON, WY · 160 people · Groundwater FIRST FIKE SUBDIVISION PAVILLION, WY · 150 people · Groundwater EVANS MOBILE HOME COURT WILSON, WY · 150 people · Groundwater BALD MOUNTAIN TRAILER COURT GILLETTE, WY · 150 people · Groundwater INDIAN PAINTBRUSH WATER DISTRICT WILSON, WY · 150 people · Groundwater SOUTH END WATER USERS S&I DISTRICT LOVELL, WY · 150 people · Groundwater Purchased WATER UNLIMITED, INCORPORATED NEWCASTLE, WY · 144 people · Groundwater SOUTHFORK ESTATES GILLETTE, WY · 144 people · Groundwater CLEARMONT, TOWN OF CLEARMONT, WY · 142 people · Groundwater EAGLE RIDGE MHP, LLC GILLETTE, WY · 140 people · Groundwater GRANGER, TOWN OF GRANGER, WY · 139 people · Surface Water ETNA WATER & SEWER DISTRICT GROVER, WY · 135 people · Groundwater FAIRWAY ESTATES DOUGLAS, WY · 135 people · Groundwater YODER, TOWN OF YODER, WY · 131 people · Groundwater PLEASANT VIEW WATER COMPANY CASPER, WY · 130 people · Surface Water Purchased