Is St. John, Indiana tap water safe?
1 water system report serving St. John. Your water depends on which one serves your address. Check your bill if unsure.
A
St. John Municipal Water Utility
Serves 25,700 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).