Prairie Du Sac Waterworks, WI Water Quality
Prairie Du Sac Waterworks: EPA violation history, explained
Prairie Du Sac 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 4,006 people through 1,483 service connections.
How this compares nationally
Out of 12,903 systems in this dataset, Prairie Du Sac Waterworks ranks 2,486th by violation burden (81th percentile) - 13 violations total, 8 health-based.
How Prairie Du Sac Waterworks compares within WI
Prairie Du Sac Waterworks's 8 health-based violations sit above the WI average of 5.4, across 259 systems statewide. 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 Prairie Du Sac Waterworks is from 2025-05-10 (health-based: 2025-05-10). Last reported to EPA: 05/29/2026.
What kind of problem, specifically
Prairie Du Sac 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)
- Nitrate / nitrite - flagged from: Nitrate
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
Everything on this page is Prairie Du Sac Waterworks's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 13 logged violations can see. The guide to what this data misses covers that gap.