All water systems in Wyoming
773 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Gtnp-Gros Ventre CG Moose · Teton County |
500 | 0 | 0 | |
|
Lds Auburn/grover/meadows Meetinghouse Grover · Lincoln County |
500 | 1 | 0 | |
|
Munger Mountain Elementary School Jackson · Teton County |
500 | 0 | 0 | |
|
Wamsutter, Town of Wamsutter · Sweetwater County |
500 | 1 | 1 | |
|
WY Dot-Mule Creek RA Newcastle · Niobrara County |
500 | 0 | 0 | |
|
WY Dot-Sweetwater Rest Area Riverton · Fremont County |
500 | 0 | 0 | |
|
Pine Haven, Town of Pine Haven · Crook County |
498 | 0 | 0 | |
|
Pub Place Jackson · Teton County |
497 | 6 | 0 | |
|
Ynp-Tower Fall CG Yellowstone Np · Park County |
495 | 0 | 0 | |
|
Prairie Wind Elementary School Cheyenne · Laramie County |
491 | 1 | 0 | |
|
Snow King Condominiums Jackson · Teton County |
490 | 0 | 0 | |
|
South Laramie W&s District Laramie · Albany County |
490 | 0 | 0 | |
|
Lingle, Town of Lingle · Goshen County |
486 | 5 | 0 | |
|
Sunny Meadows Village Laramie · Albany County |
485 | 0 | 0 | |
|
Lone Tree Village MHP Douglas · Converse County |
475 | 0 | 0 | |
|
Nordic Ranches Water, Llc. Alpine · Lincoln County |
465 | 3 | 0 | |
|
Hudson, Town of Hudson · Fremont County |
460 | 2 | 2 | |
|
American Soda LLC Green River · Sweetwater County |
450 | 0 | 0 | |
|
Bomgaars Supply, Incorporated Pinedale · Sublette County |
450 | 0 | 0 | |
|
Encampment, Town of Encampment · Carbon County |
450 | 1 | 0 | |
|
Jim Bridger Power Plant Point Of Rocks · Sweetwater County |
450 | 1 | 0 | |
|
Rolling Hills, Town of Rolling Hills · Converse County |
450 | 3 | 0 | |
|
Sandy Lake Estates I&s District Casper · Natrona County |
450 | 1 | 1 | |
|
Sisecam Wyoming LLC Green River · Sweetwater County |
450 | 2 | 0 | |
|
South Thermopolis W&s District Thermopolis · Hot Springs County |
450 | 0 | 0 | |
|
South Torrington Water District Torrington · Goshen County |
450 | 1 | 0 | |
|
Western Hills MHP Rock Springs · Sweetwater County |
450 | 1 | 0 | |
|
LA Grange, Town of La Grange · Goshen County |
448 | 4 | 0 | |
|
Big Piney, Town of Big Piney · Sublette County |
445 | 1 | 1 | |
|
Ucross Guest Ranch Clearmont · Sheridan County |
441 | 2 | 0 | |
|
Sinclair, Town of Sinclair · Carbon County |
433 | 0 | 0 | |
|
Flying J Travel Plaza Rawlins · Carbon County |
425 | 1 | 0 | |
|
Natrona County Int'l Airport Casper · Natrona County |
423 | 3 | 0 | |
|
Calico Italian Restaurant Teton Village · Teton County |
420 | 0 | 0 | |
|
Hulett, Town of Hulett · Crook County |
420 | 0 | 0 | |
|
Teton Science School-Jackson Campus Jackson · Teton County |
420 | 0 | 0 | |
|
Westview MHC Campbell County |
416 | 0 | 0 | |
|
Rock Springs/green River KOA Rock Springs · Sweetwater County |
415 | 1 | 0 | |
|
Means Improvement & Service District Gillette · Campbell County |
410 | 0 | 0 | |
|
Wydot-South Pass Rest Area Lander · Fremont County |
401 | 1 | 0 | |
|
Baggs, Town of Baggs · Carbon County |
400 | 3 | 0 | |
|
Downer Neighborhood I&s District Sheridan · Sheridan County |
400 | 0 | 0 | |
|
Freedom Hills Subdivision Gillette · Campbell County |
400 | 0 | 0 | |
|
Nickelson Farms Water Company Gillette · Campbell County |
400 | 0 | 0 | |
|
Sapp Brothers Truck Stop Cheyenne · Laramie County |
400 | 3 | 1 | |
|
Spring Creek Improvement District Jackson · Teton County |
400 | 0 | 0 | |
|
Ten Sleep, Town of Ten Sleep · Washakie County |
400 | 2 | 1 | |
|
Arbys Restaurant #7432 Cheyenne · Laramie County |
386 | 3 | 0 | |
|
CV Laramie Mhp, LLC Laramie · Albany County |
375 | 2 | 0 | |
|
Green Acres Mobile Home Park Cody · Park County |
375 | 0 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules still in violation at EPA's latest data refresh.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Wyoming records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.