Is ORO VALLEY WATER UTILITY's water safe to drink?
ORO VALLEY WATER UTILITY has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 42,316 people get their water from it, across 18,481 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, ORO VALLEY WATER UTILITY ranks 2,271th by violation burden (82th percentile) - 1,807 violations total, 8 health-baseds.
How ORO VALLEY WATER UTILITY compares within AZ
ORO VALLEY WATER UTILITY's 8 health-based violations sit within the AZ average of 8.2, across 199 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 ORO VALLEY WATER UTILITY is from 2019-01-01 (health-based: 2014-01-01). Last reported to EPA: 05/14/2026.
What kind of problem, specifically
ORO VALLEY WATER UTILITY'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)
- Other regulated metals - flagged from: Mercury
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 ORO VALLEY WATER UTILITY 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 ORO VALLEY WATER UTILITY's customers' taps is household plumbing, invisible to a system-level record ranked 2,271th of 12,903 by violation count. The guide to what this data misses covers that gap.