Is Lake Mills, Wisconsin tap water safe?
2 water systems report serving Lake Mills. Your water depends on which one serves your address. Check your bill if unsure.
B
Lake Mills Waterworks
Serves 6,211 people · Groundwater · Full report →
1 health-based violation in the last 5 years; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A
Lakewood Village
Serves 160 people · Groundwater · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; No UCMR 5 PFAS results on file; Latest lead 90th percentile on file is from 2021 (older than 5 years, not graded).