Montana
Custer County drinking water quality
11 active public water systems serve 10,579 people in Custer County. 6 are compliant, 5 had at least one EPA violation in the past three years, 0 are designated serious violators, and 0 carry a health flag.
Community water systems
4 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Miles City City of Miles City |
9,565 | 2 | 0 | |
|
Custer CO Water and Sewer Dist Miles City |
480 | 0 | 0 | |
|
Pine Hills Youth Correct Facil Miles City |
193 | 1 | 0 | |
|
Palisades Apartments Miles City |
50 | 3 | 0 |
Non-community systems (7: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Kinsey School District 63 Kinsey |
86 | 0 | 0 | |
|
Big Sky Camp and RV Park Miles City |
56 | 0 | 0 | |
|
Kircher School Dist 03 Miles City |
45 | 0 | 0 | |
|
Motel Miles Miles City |
29 | 2 | 0 | |
|
Albertsons Miles City NO 2039 Miles City |
25 | 0 | 0 | |
|
June's Bungalow Miles City |
25 | 1 | 0 | |
|
Primo Refill Wal-Mart NO 2608 Miles City |
25 | 0 | 0 |
Inactive systems (34, 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.