What's in FLAGSTAFF CITY OF's water?
FLAGSTAFF 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: 79,796, over 23,869 connections.
FLAGSTAFF CITY OF's record against the rest of the country
769 total violations and 7 health-based ones put FLAGSTAFF CITY OF at the 80th percentile nationally for violation burden, rank 2,525 of 12,903.
Against the AZ average
FLAGSTAFF CITY OF's 7 health-based violations sit within the AZ average of 8.2, across 199 systems statewide. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
FLAGSTAFF CITY OF's most recent violation on record is dated 2025-01-07, with the most recent health-based one dated 2015-01-07. Last reported to EPA: 05/14/2026.
The concern categories on record
FLAGSTAFF 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:
- Microbial contamination / treatment technique - flagged from: Surface Water Treatment Rule
- Other regulated metals - flagged from: Cadmium; Selenium
- Disinfection byproducts - flagged from: Total Haloacetic Acids (HAA5)
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 FLAGSTAFF CITY OF's record does not cover
This is what FLAGSTAFF CITY OF 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. This record - 7 health-based violations on file for FLAGSTAFF CITY OF - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.