HIGHLAND PARK: EPA violation history, explained
HIGHLAND PARK has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 8,977 people through 3,514 service connections.
How this compares nationally
13 total violations and 3 health-based ones put HIGHLAND PARK at the 60th percentile nationally for violation burden, rank 5,183 of 12,903.
How HIGHLAND PARK compares within MI
Among the 390 MI systems in this dataset, the average is 1.3 health-based violations - HIGHLAND PARK's 3 is above 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 HIGHLAND PARK is from 2025-01-07 (health-based: 2012-01-04). Last reported to EPA: 06/23/2026.
What kind of problem, specifically
HIGHLAND PARK'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); Interim Enhanced Surface Water Treatment Rule
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 this data is and is not
Everything on this page is HIGHLAND PARK's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 3 health-based violations on file for HIGHLAND PARK - 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.