Holmen Waterworks, WI Water Quality
What's in Holmen Waterworks's water?
Holmen 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 10,147 people through 2,113 service connections.
Holmen Waterworks's record against the rest of the country
Out of 12,903 systems in this dataset, Holmen Waterworks ranks 4,865th by violation burden (62th percentile) - 36 violations total, 3 health-based.
Against the WI average
Among the 259 WI systems in this dataset, the average is 5.4 health-based violations - Holmen Waterworks's 3 is at or below that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
Holmen Waterworks's most recent violation on record is dated 2025-05-10, with the most recent health-based one dated 2025-05-10. Last reported to EPA: 05/29/2026.
The concern categories on record
Holmen 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
- Microbial contamination / treatment technique - flagged from: Coliform (TCR); Groundwater Rule
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What Holmen Waterworks's record does not cover
Everything on this page is Holmen Waterworks'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 Holmen 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.