Epcor- Rio Verde, AZ Water Quality
Epcor- Rio Verde: EPA violation history, explained
Epcor- Rio Verde has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 5,330 people get their water from it, across 3,046 connections.
Epcor- Rio Verde's record against the rest of the country
Epcor- Rio Verde has 97 violations on record in total, 3 of them health-based - ranking it 4,714th of 12,903 systems by violation count, the 63th percentile nationally.
How Epcor- Rio Verde compares within AZ
Epcor- Rio Verde's 3 health-based violations sit within the AZ average of 8.0, across 210 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 Epcor- Rio Verde is from 2025-01-04 (health-based: 1982-02-01). Last reported to EPA: 05/14/2026.
What kind of problem, specifically
Epcor- Rio Verde'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:
- Other regulated metals - flagged from: Fluoride
The most severe category on record is other regulated metals, which points toward a reverse osmosis-class filter if you want to address it directly.
What this data is and is not
This is what Epcor- Rio Verde 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 97 logged violations can see. The guide to what this data misses covers that gap.