What's in TOLLESON CITY OF's water?
TOLLESON CITY OF has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 9,300 people get their water from it, across 2,040 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, TOLLESON CITY OF ranks 7,226th by violation burden (44th percentile) - 114 violations total, 1 health-based.
Against the AZ average
Among the 199 AZ systems in this dataset, the average is 8.2 health-based violations - TOLLESON CITY OF's 1 is at or below that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
TOLLESON CITY OF's most recent violation on record is dated 2026-01-03, with the most recent health-based one dated 1984-07-08. Last reported to EPA: 05/14/2026.
The concern categories on record
TOLLESON CITY OF'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:
- Nitrate / nitrite - flagged from: Nitrate
The most severe category on record is nitrate / nitrite, which points toward a reverse osmosis-class filter if you want to address it directly.
What TOLLESON CITY OF's record does not cover
TOLLESON CITY OF'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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 114 logged violations can see. The guide to what this data misses covers that gap.