Montana
Carbon County drinking water quality
36 active public water systems serve 9,149 people in Carbon County. 15 are compliant, 21 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
12 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Red Lodge Water Dept Red Lodge |
2,000 | 0 | 0 | |
|
Bridger Town of Bridger |
750 | 1 | 0 | |
|
Joliet Town of Joliet |
600 | 1 | 1 | |
|
Fromberg Town of Fromberg |
498 | 5 | 1 | |
|
Roberts Wua Carbon CO Water and Sewer Roberts |
300 | 0 | 0 | |
|
Belfry Carbon CO Water and Sewer Dist Belfry |
205 | 1 | 1 | |
|
Bearcreek Municipal Water Sys Red Lodge |
200 | 0 | 0 | |
|
Vwa Services Bridger |
93 | 0 | 0 | |
|
Cooney Enterprises Billings |
50 | 1 | 0 | |
|
Rio Vista Estates HOA Assoc INC Laurel |
50 | 1 | 0 | |
|
Evergreen Subdivision Billings |
45 | 0 | 0 | |
|
Canyon Ranches Subdivision Red Lodge |
36 | 0 | 0 |
Non-community systems (24: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
Inactive systems (15, 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.