Water Quality: Chinook, MT
2 water systems • 1,400 people served
Multiple Health ViolationsWater Quality Summary
Chinook is served by 2 public water systems with a combined service population of 1,400 people, and has 12 EPA Safe Drinking Water Act violations on record. Critically, 7 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Chinook's violation count is 89% below the national average for Montana. Contaminants associated with violations include Total Haloacetic Acids (HAA5).
Contaminants Found
Haloacetic acids are associated with increased cancer risk and potential reproductive and developmental effects.
Common source: Reaction of chlorine disinfectants with organic matter in treated water
EPA limit: 0.060 mg/L (60 ppb)
Water Systems Serving Chinook
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| CHINOOK CITY OF | MT0000174 | Surface Water | 1,300 | 7 |
| PERRYS WATER SERVICE | MT0004869 | Surface Water | 100 | 5 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in Montana
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.