What's in WARRENTON PWS's water?

WARRENTON PWS has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 8,208 people through 3,908 service connections.

Ranked against every other system in this dataset

Out of 12,903 systems in this dataset, WARRENTON PWS ranks 1,395th by violation burden (89th percentile) - 19 violations total, 14 health-baseds.

Against the MO average

Among the 327 MO systems in this dataset, the average is 6.1 health-based violations - WARRENTON PWS's 14 is above that. See the lead and copper guide for why lead counts differently.

Most recent violation on record

WARRENTON PWS's most recent violation on record is dated 2014-01-11, with the most recent health-based one dated 2009-01-02. Last reported to EPA: 06/16/2026.

The concern categories on record

WARRENTON PWS'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)

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 WARRENTON PWS's record does not cover

This is what WARRENTON PWS 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 - 14 health-based violations on file for WARRENTON PWS - 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.