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Oro Valley reports no water-quality violations in 2025; backflow program enforces ~1,500 assemblies
Summary
Staff told the commission the utility completed 4,681 water-quality samples in 2025 with no violations; quarterly and UCMR testing schedules were reviewed, and staff said the town manages testing and recordkeeping for about 1,500 private backflow assemblies, performing ~125 tests and repairs in-house annually.
The utility's water-quality briefing covered state and federal oversight, sampling frequencies and program work. The presenter (speaker 6, covering for the absent specialist) said the Arizona Department of Environmental Quality holds primacy for enforcement and that EPA rules set sampling frequency by population and contaminant type; staff reported completing 4,681 samples in 2025 and reported no violations.
Staff also described the town's backflow and cross-connection prevention program: the utility is responsible for compliance of roughly 1,500 private backflow assemblies across both service systems and performs about 125 tests and repairs annually in-house. The presenter noted the long-term lead-and-copper rule changes and upcoming UCMR-6 monitoring, and said Oro Valley is ahead of many systems in preparatory work toward the November 2027 long-term lead-and-copper compliance schedule.
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