Montana
Lincoln County drinking water quality
92 active public water systems serve 19,484 people in Lincoln County. 38 are compliant, 54 had at least one EPA violation in the past three years, 0 are designated serious violators, and 6 carry a health flag.
Needs attention
Community water systems
19 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Libby City of Libby |
4,892 | 1 | 0 | |
|
Troy City of Troy |
2,100 | 0 | 0 | |
|
Eureka Town of Eureka |
1,995 | 0 | 0 | |
|
Indian Springs Ranch Sub Eureka |
455 | 3 | 0 | |
|
Wilderness Club the Eureka |
440 | 0 | 0 | |
|
Wilderness Plateau Water and Sewer Dist Troy |
208 | 1 | 1 | |
|
Emkayan Village CO Water and Sewer Dist Libby |
160 | 1 | 0 | |
|
Pinewood Village Libby |
160 | 1 | 0 | |
|
Rexford Town of Rexford |
160 | 0 | 0 | |
|
Angel Island Subdivision Troy |
150 | 1 | 0 | |
|
Barnaby Lake HOA Eureka |
75 | 0 | 0 | |
|
Carpenter Lake HOA Eureka |
65 | 1 | 0 | |
|
Rivers Edge Mobile Park Libby Libby |
60 | 3 | 1 | |
|
Turning Winds Troy |
50 | 0 | 0 | |
|
Posts Trailer Court Libby |
45 | 4 | 0 | |
|
Creekside Motel RV and Trlr PK Eureka |
35 | 3 | 0 | |
|
Johnsons Mobile Home Park Libby |
35 | 1 | 0 | |
|
Libby Creek Mobile Park Llc-Unapproved Libby |
35 | 0 | 0 | |
|
Crystal Lake Subdivision HOA Fortine |
34 | 0 | 0 |
Non-community systems (73: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
Inactive systems (116, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
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.