Montana
Toole County drinking water quality
18 active public water systems serve 6,498 people in Toole County. 5 are compliant, 13 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
15 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Shelby City of Shelby |
3,970 | 1 | 1 | |
|
Sunburst Town of Sunburst |
459 | 1 | 0 | |
|
Ncmrwa North Shelby Shelby |
300 | 1 | 0 | |
|
Oilmont County Water District Shelby |
300 | 1 | 0 | |
|
Kevin Town of Kevin |
290 | 0 | 0 | |
|
Galata County Water District Galata |
200 | 1 | 0 | |
|
Rimrock Colony Sunburst |
124 | 1 | 0 | |
|
Hillside Colony INC Sweetgrass |
100 | 0 | 0 | |
|
Sweetgrass Water Users Assn Sweetgrass |
100 | 3 | 1 | |
|
Camrose Colony Ledger |
95 | 3 | 0 | |
|
Nine Mile CO Water and Sewer District |
90 | 1 | 0 | |
|
Big Rose Colony Sunburst |
75 | 0 | 0 | |
|
Devon Water INC Shelby |
75 | 2 | 2 | |
|
Ethridge County Water District Shelby |
70 | 2 | 1 | |
|
Ncmrwa Shelby to Ethridge Cut Bank |
70 | 0 | 0 |
Non-community systems (3: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Marias Valley Golf and Country Club Shelby |
105 | 2 | 0 | |
|
Albertsons Shelby NO 2014 Shelby |
50 | 0 | 0 | |
|
Lewis and Clark RV Park Shelby |
25 | 1 | 0 |
Inactive systems (3, 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.