Is ROCK VALLEY WATER SUPPLY's water safe to drink?
ROCK VALLEY WATER SUPPLY has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 4,059, over 1,866 connections.
How this compares nationally
19 total violations and 11 health-based ones put ROCK VALLEY WATER SUPPLY at the 86th percentile nationally for violation burden, rank 1,810 of 12,903.
Against the IA average
Among the 203 IA systems in this dataset, the average is 3.5 health-based violations - ROCK VALLEY WATER SUPPLY's 11 is above that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
ROCK VALLEY WATER SUPPLY's most recent violation on record is dated 2024-01-08, with the most recent health-based one dated 2002-01-08. Last reported to EPA: 06/17/2026.
The concern categories on record
ROCK VALLEY WATER SUPPLY'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)
- Nitrate / nitrite - flagged from: Nitrate
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 ROCK VALLEY WATER SUPPLY's record does not cover
ROCK VALLEY WATER SUPPLY's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 19 logged violations can see. The guide to what this data misses covers that gap.