Water quality in Johnstown, Wyoming
Johnstown is in Fremont County. 61 active public water systems serve the county; 38 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Fremont County
20 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Raintree Estates Riverton |
100 | 0 | 13.1 mi | |
| Mountain View Acres Riverton |
165 | 8 | 13.1 mi | |
| Farview Water and Sewer District Riverton |
60 | 5 | 14.5 mi | |
| Riverton, City of Riverton |
10,330 | 3 | 15.3 mi | |
| Second Fike Subdivision Riverton |
34 | 2 | 15.5 mi | |
| Hudson, Town of Hudson |
460 | 2 | 15.5 mi | |
| First Fike Subdivision Riverton |
150 | 2 | 15.5 mi | |
| Sunridge Estates Riverton |
220 | 3 | 17.1 mi | |
| A & J Mobile Home Park Riverton |
100 | 3 | 17.1 mi | |
| B&k Mobile Home Park Riverton |
200 | 4 | 17.2 mi | |
| Gardens North Homeowners Association Riverton |
300 | 2 | 17.4 mi | |
| Jade MHC Riverton |
200 | 3 | 17.5 mi | |
| Redd Fox Park HOA Lander |
75 | 0 | 18.7 mi | |
| Lander, City of Lander |
7,615 | 1 | 19.7 mi | |
| Pleasant Valley Water Association Lander |
35 | 0 | 19.8 mi | |
| Juniper Park Water Association Lander |
42 | 0 | 21.2 mi | |
| Shoshoni, Town of Shoshoni |
515 | 1 | 30.3 mi | |
| Dubois, Town of Dubois |
1,822 | 1 | 55.8 mi | |
| Warm Springs Water District Dubois |
68 | 1 | 58.2 mi | |
| Jeffrey City Water & Sewer District Riverton |
40 | 4 | 61.0 mi |
Non-community systems in Fremont County (40: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Fremont County, nearest to Johnstown 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.