COMBINED LOCKS WATERWORKS: EPA violation history, explained
COMBINED LOCKS WATERWORKS had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. It serves 3,609 people through 1,433 service connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, COMBINED LOCKS WATERWORKS ranks 8,395th by violation burden (35th percentile) - 8 violations total, 1 health-based.
How COMBINED LOCKS WATERWORKS compares within WI
COMBINED LOCKS WATERWORKS's 1 health-based violations sit within the WI average of 3.6, across 202 systems statewide. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
The last violation EPA has on record for COMBINED LOCKS WATERWORKS is from 2025-05-10 (health-based: 2025-05-10). Last reported to EPA: 05/29/2026.
What kind of problem, specifically
COMBINED LOCKS WATERWORKS'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:
- Lead & copper - flagged from: LEAD AND COPPER RULE REVISIONS
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What this data is and is not
COMBINED LOCKS WATERWORKS's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. This record - 1 health-based violation on file for COMBINED LOCKS WATERWORKS - 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.