What's in ARUZ's water?
ARUZ has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 5,105 people through 1,912 service connections.
Ranked against every other system in this dataset
ARUZ has 204 violations on record in total, 17 of thems health-based - ranking it 1,044th of 12,903 systems by violation count, the 92th percentile nationally.
How ARUZ compares within PR
ARUZ's 17 health-based violations sit within the PR average of 46.1, across 103 systems statewide. 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 ARUZ is from 2024-01-01 (health-based: 2004-01-04). Last reported to EPA: 06/05/2026.
What kind of problem, specifically
ARUZ'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 this data is and is not
This is what ARUZ 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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 204 logged violations can see. The guide to what this data misses covers that gap.