What's in MAHWAH WATER DEPARTMENT's water?
MAHWAH WATER DEPARTMENT has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 26,777, over 8,775 connections.
MAHWAH WATER DEPARTMENT's record against the rest of the country
MAHWAH WATER DEPARTMENT has 42 violations on record in total, 1 of them health-based - ranking it 7,500th of 12,903 systems by violation count, the 42th percentile nationally.
Against the NJ average
NJ's 270 covered systems average 5.3 health-based violations each; MAHWAH WATER DEPARTMENT carries 1, not more than typical for the state. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
MAHWAH WATER DEPARTMENT's most recent violation on record is dated 2023-01-01, with the most recent health-based one dated 2012-01-10. Last reported to EPA: 06/30/2026.
The concern categories on record
MAHWAH WATER DEPARTMENT'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 MAHWAH WATER DEPARTMENT's record does not cover
This is what MAHWAH WATER DEPARTMENT reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. Between the utility's meter and MAHWAH WATER DEPARTMENT's customers' taps is household plumbing, invisible to a system-level record ranked 7,500th of 12,903 by violation count. The guide to what this data misses covers that gap.