COLSTRIP CITY OF
PWSID: MT0000180 · Colstrip, MT · Serves 2,350 people
According to EPA Safe Drinking Water Information System (SDWIS), COLSTRIP CITY OF (PWSID MT0000180) in Colstrip, MT is listed as a CWS water system covering about 2,350 people. The same extract lists 6 health-based violation records spanning 2024-2024. Those 6 health-based rows for COLSTRIP CITY OF cover contaminants such as Surface Water Treatment Rule, TTHM; they remain historical EPA registry entries, not a current compliance or drinkability score.
COLSTRIP CITY OF has 6 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 2 distinct EPA contaminant codes appear in this system's record, including Surface Water Treatment Rule, TTHM. Recorded violations span 2024–2024. Day-to-day primacy enforcement for this system runs through the Montana drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Montana state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- MT0000180
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Colstrip, MT
- Population Served
- 2,350
- Health Violations
- Yes (6)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Surface Water Treatment Rule | 3 | 3 |
| TTHM | 3 | 3 |
Violation History (6)
| Contaminant | Health | Date |
|---|---|---|
| Surface Water Treatment Rule | Yes | Jul 1, 2024 |
| Surface Water Treatment Rule | Yes | Jul 1, 2024 |
| Surface Water Treatment Rule | Yes | Jul 1, 2024 |
| TTHM | Yes | Jul 1, 2024 |
| TTHM | Yes | Jul 1, 2024 |
| TTHM | Yes | Jul 1, 2024 |
Frequently Asked Questions
What does EPA SDWIS list for COLSTRIP CITY OF?
How many people does COLSTRIP CITY OF serve?
What violations does COLSTRIP CITY OF have?
What contaminants have been found in COLSTRIP CITY OF water?
Compare beyond Montana
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest COLSTRIP CITY OF on cumulative violation count (6) and EPA-reported population served (2,350). Violation-count peers include CHEROKEE WATER SYSTEM, FOUR BEARS WATER SYSTEM, SPIRIT LAKE WATER MANAGEMENT RWS. Population peers include CHINO MEADOWS II, DUNCANSVILLE MUNI WATER AUTH, MERCERSBURG MUNI WATER AUTH.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
Explore More
About This Data
COLSTRIP CITY OF (MT0000180) is drawn from EPA SDWIS. Nearby county systems in this extract include LAME DEER WATER SYSTEM; FORSYTH CITY OF; BUSBY COMMUNITY WATER SYSTEM; ASHLAND COMMUNITY WATER SYSTEM. Health-based rows (6 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.