Oro Valley Water Utility

Water Quality Snapshot: Oro Valley Water Utility

Oro Valley Water Utility is a local-owned community water system that delivers drinking water to 42,316 residents in Oro Valley, Arizona (Pima County) through 18,481 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 2,191 total violations for this system , of which 11 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 2,178 monitoring and reporting violations are on file. The most recent violation on record dates to 2019.

The most frequently cited contaminant at this system is Xylenes, Total, recorded in 59 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

Across Arizona, EPA tracks 1,493 public water systems serving 7,322,166 people, with 228,944 cumulative violations and 15,663 health-based violations on record. About 98% of systems in the state carry at least one violation, and state-wide the average per system is 153.3 violations. Statewide, 145 of 152 UCMR5-tested systems have reported PFAS detections (95.4%).

Oro Valley Water Utility's 2,191 violations sit above the Arizona average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.