What's in CHELSEA's water?
CHELSEA has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 5,474, over 2,000 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, CHELSEA ranks 4,548th by violation burden (65th percentile) - 6 violations total, 4 health-baseds.
Against the MI average
Among the 390 MI systems in this dataset, the average is 1.3 health-based violations - CHELSEA's 4 is above that. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
CHELSEA's most recent violation on record is dated 2005-01-07, with the most recent health-based one dated 2003-01-06. Last reported to EPA: 06/23/2026.
The concern categories on record
CHELSEA'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)
- Synthetic organic chemicals / pesticides / VOCs - flagged from: Acrylamide
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 CHELSEA's record does not cover
Everything on this page is CHELSEA's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 4 health-based violations on file for CHELSEA - 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.