Is Saint Marys, Pennsylvania tap water safe?
1 water system report serving Saint Marys. Your water depends on which one serves your address. Check your bill if unsure. This list is matched from the ZIP codes in this place, so it may include nearby systems.
B
St Marys Area Water Auth
Serves 19,588 people · Surface water · Full report →
No health-based violations in the last 5 years; 12 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).