Water quality in Mammoth, Wyoming
Mammoth is in Park County. 50 active public water systems serve the county; 29 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Park County
10 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Copperleaf Water System Cody |
42 | 1 | 69.6 mi | |
| Shoshone Municipal Pipeline Cody |
25 | 0 | 84.2 mi | |
| Northwest Rural Water District Cody |
7,330 | 0 | 85.4 mi | |
| Rivers Bend Trailer Court Cody |
96 | 1 | 85.6 mi | |
| Cody, City of Cody |
10,224 | 2 | 86.1 mi | |
| Jubys Mobile Home Park Cody |
300 | 2 | 86.3 mi | |
| Green Acres Mobile Home Park Cody |
375 | 0 | 86.6 mi | |
| Powell, City of Powell |
6,310 | 1 | 96.1 mi | |
| Big Valley & Crossed Arrows Imp Dist Meeteetse |
35 | 4 | 104.8 mi | |
| Meeteetse, Town of Meeteetse |
327 | 0 | 106.2 mi |
Non-community systems in Park County (39: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Park County, nearest to Mammoth first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
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.