Is Williams Bay, Wisconsin tap water safe?
1 water system report serving Williams Bay. Your water depends on which one serves your address. Check your bill if unsure.
D
Williams Bay Waterworks
Serves 2,601 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 10 monitoring/reporting violations; 5 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile ABOVE the action level (2026).