What's in CITY OF MADISON's water?
CITY OF MADISON has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 16,136 people through 6,112 service connections.
CITY OF MADISON's record against the rest of the country
Out of 12,903 systems in this dataset, CITY OF MADISON ranks 7,333th by violation burden (43th percentile) - 72 violations total, 1 health-based.
Against the MS average
CITY OF MADISON's 1 health-based violations sit within the MS average of 3.2, across 349 systems statewide. See the lead and copper guide for why lead counts differently.
Most recent violation on record
CITY OF MADISON's most recent violation on record is dated 2023-01-07, with the most recent health-based one dated 2004-02-05. Last reported to EPA: 05/18/2026.
The concern categories on record
CITY OF MADISON'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 CITY OF MADISON's record does not cover
Everything on this page is CITY OF MADISON's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 1 health-based violation on file for CITY OF MADISON - 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.