Is Mukwonago, Wisconsin tap water safe?
3 water systems report serving Mukwonago. Your water depends on which one serves your address. Check your bill if unsure.
A
Mukwonago Waterworks
Serves 8,190 people · Groundwater · Full report →
No health-based violations in the last 5 years; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2023).
C
Norris Inc
Serves 141 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 84 monitoring/reporting violations; 5 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2022).
A
Heaven City
Serves 106 people · Groundwater · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).