Water quality in Eureka, Montana
Eureka is in Lincoln County. 92 active public water systems serve the county; 54 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Lincoln County
18 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Eureka Town of Eureka |
1,995 | 0 | 1.4 mi | |
| Carpenter Lake HOA Eureka |
65 | 1 | 1.5 mi | |
| Indian Springs Ranch Sub Eureka |
455 | 3 | 1.6 mi | |
| Wilderness Club the Eureka |
440 | 0 | 4.4 mi | |
| Rexford Town of Rexford |
160 | 0 | 5.6 mi | |
| Crystal Lake Subdivision HOA Fortine |
34 | 0 | 11.5 mi | |
| Barnaby Lake HOA Eureka |
75 | 0 | 20.4 mi | |
| Emkayan Village CO Water and Sewer Dist Libby |
160 | 1 | 38.3 mi | |
| Rivers Edge Mobile Park Libby Libby |
60 | 3 | 38.9 mi | |
| Posts Trailer Court Libby |
45 | 4 | 42.5 mi | |
| Johnsons Mobile Home Park Libby |
35 | 1 | 42.5 mi | |
| Libby Creek Mobile Park Llc-Unapproved Libby |
35 | 0 | 42.5 mi | |
| Libby City of Libby |
4,892 | 1 | 42.5 mi | |
| Pinewood Village Libby |
160 | 1 | 44.5 mi | |
| Troy City of Troy |
2,100 | 0 | 49.0 mi | |
| Wilderness Plateau Water and Sewer Dist Troy |
208 | 1 | 49.1 mi | |
| Turning Winds Troy |
50 | 0 | 49.1 mi | |
| Angel Island Subdivision Troy |
150 | 1 | 57.9 mi |
Non-community systems in Lincoln County (73: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Lincoln County, nearest to Eureka 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 Montana 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.