Greene Co.-Northwest Reg Water, OH Water Quality
Greene Co.-Northwest Reg Water: EPA violation history, explained
Greene Co.-Northwest Reg Water has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 41,895 people through 16,597 service connections.
How this compares nationally
Greene Co.-Northwest Reg Water has 20 violations on record in total, 4 of them health-based - ranking it 4,194th of 12,903 systems by violation count, the 68th percentile nationally.
How Greene Co.-Northwest Reg Water compares within OH
Among the 412 OH systems in this dataset, the average is 5.3 health-based violations - Greene Co.-Northwest Reg Water's 4 is at or below 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 Greene Co.-Northwest Reg Water is from 2026-07-01 (health-based: 1999-01-06). Last reported to EPA: 05/15/2026.
What kind of problem, specifically
Greene Co.-Northwest Reg Water'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)
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 Greene Co.-Northwest Reg Water'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 Greene Co.-Northwest Reg Water's customers' taps is household plumbing, invisible to a system-level record ranked 4,194th of 12,903 by violation count. The guide to what this data misses covers that gap.