Epcor - Anthem, AZ Water Quality
Epcor - Anthem: EPA violation history, explained
Epcor - Anthem has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 23,826 people through 9,164 service connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, Epcor - Anthem ranks 7,217th by violation burden (44th percentile) - 123 violations total, 1 health-based.
How Epcor - Anthem compares within AZ
Epcor - Anthem's 1 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 - Anthem is from 2025-02-07 (health-based: 2017-01-10). Last reported to EPA: 05/14/2026.
What kind of problem, specifically
Epcor - Anthem'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: Long Term 2 Enhanced Surface Water Treatment Rule
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
Everything on this page is Epcor - Anthem's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Between the utility's meter and Epcor - Anthem's customers' taps is household plumbing, invisible to a system-level record ranked 7,217th of 12,903 by violation count. The guide to what this data misses covers that gap.