Montana
Chouteau County drinking water quality
12 active public water systems serve 3,456 people in Chouteau County. 3 are compliant, 9 had at least one EPA violation in the past three years, 1 is a designated serious violator, and 0 carry a health flag.
Needs attention
Community water systems
11 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Fort Benton City of Fort Benton |
1,500 | 0 | 0 | |
|
Big Sandy Town of Big Sandy |
608 | 2 | 0 | |
|
Highwood County Water and Sewer District Highwood |
280 | 2 | 0 | |
|
Geraldine Town of Geraldine |
260 | 1 | 0 | |
|
Loma County Water District Loma |
200 | 0 | 0 | |
|
Carter Chouteau CO Water Dist Carter |
150 | 2 | 0 | |
|
South Chouteau County Water Dist Highwood |
80 | 5 | 3 | |
|
Sunny Brook Colony Chester |
80 | 0 | 0 | |
|
Twin Hills Colony INC Carter |
78 | 3 | 0 | |
|
Hawarden Square Butte Water Fort Benton |
50 | 2 | 1 | |
|
North Geraldine Water System Geraldine |
50 | 1 | 1 |
Non-community systems (1: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Coal Banks Landing Blm Lewistown |
120 | 2 | 0 |
Inactive systems (5, 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.