Is TUCSON CITY OF's water safe to drink?
TUCSON CITY OF has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 732,906, over 191,264 connections.
How this compares nationally
Out of 12,903 systems in this dataset, TUCSON CITY OF ranks 7,067th by violation burden (45th percentile) - 2,076 violations total, 1 health-based.
How TUCSON CITY OF compares within
Among the 244 systems in this dataset, the average is 11.2 health-based violations - TUCSON CITY OF's 1 is at or below that. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
The last violation EPA has on record for TUCSON CITY OF is from 2026-01-01 (health-based: 1981-07-11). Last reported to EPA: 05/14/2026.
What kind of problem, specifically
TUCSON 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 this data is and is not
TUCSON 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 2,076 logged violations can see. The guide to what this data misses covers that gap.