STANLEY WATERWORKS: EPA violation history, explained
STANLEY WATERWORKS has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 3,500, over 882 connections.
How this compares nationally
29 total violations and 2 health-based ones put STANLEY WATERWORKS at the 53th percentile nationally for violation burden, rank 6,082 of 12,903.
How STANLEY WATERWORKS compares within WI
STANLEY WATERWORKS's 2 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 STANLEY WATERWORKS is from 2025-01-10 (health-based: 2017-01-05). Last reported to EPA: 05/29/2026.
What kind of problem, specifically
STANLEY 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:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR); Groundwater 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 STANLEY WATERWORKS's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 2 health-based violations on file for STANLEY 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.