Is EPCOR - SAN TAN's water safe to drink?
EPCOR - SAN TAN has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 87,435, over 26,986 connections.
EPCOR - SAN TAN's record against the rest of the country
269 total violations and 7 health-based ones put EPCOR - SAN TAN at the 80th percentile nationally for violation burden, rank 2,535 of 12,903.
Against the AZ average
Among the 199 AZ systems in this dataset, the average is 8.2 health-based violations - EPCOR - SAN TAN's 7 is at or below that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
EPCOR - SAN TAN's most recent violation on record is dated 2026-01-03, with the most recent health-based one dated 2017-01-01. Last reported to EPA: 05/14/2026.
The concern categories on record
EPCOR - SAN TAN'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)
- Nitrate / nitrite - flagged from: Nitrate
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 EPCOR - SAN TAN's record does not cover
EPCOR - SAN TAN's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Between the utility's meter and EPCOR - SAN TAN's customers' taps is household plumbing, invisible to a system-level record ranked 2,535th of 12,903 by violation count. The guide to what this data misses covers that gap.