Is CROW AGENCY WATER SYSTEM's water safe to drink?
CROW AGENCY WATER SYSTEM has at least one health-based violation EPA's ECHO database still lists as unaddressed - the required fix has not been reported complete. It serves 2,057 people through 435 service connections.
How this compares nationally
179 total violations and 28 health-based ones put CROW AGENCY WATER SYSTEM at the 95th percentile nationally for violation burden, rank 613 of 12,903.
How CROW AGENCY WATER SYSTEM compares within MT
Among the 59 MT systems in this dataset, the average is 6.7 health-based violations - CROW AGENCY WATER SYSTEM's 28 is above that. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
The last violation EPA has on record for CROW AGENCY WATER SYSTEM is from 2026-11-09 (health-based: 2026-04-08). Last reported to EPA: 06/29/2026.
What kind of problem, specifically
CROW AGENCY WATER SYSTEM's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR); Groundwater Rule; Interim Enhanced Surface Water Treatment Rule; Long Term 2 Enhanced Surface Water Treatment Rule; Surface Water Treatment Rule
- Synthetic organic chemicals / pesticides / VOCs - flagged from: CARBON, TOTAL
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What this data is and is not
Everything on this page is CROW AGENCY WATER SYSTEM's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Between the utility's meter and CROW AGENCY WATER SYSTEM's customers' taps is household plumbing, invisible to a system-level record ranked 613th of 12,903 by violation count. The guide to what this data misses covers that gap.