Is Irwin, Pennsylvania tap water safe?
2 water systems report serving Irwin. 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.
A
Mawc Sweeney Plant
Serves 143,000 people · Surface water · Full report →
No health-based violations in the last 5 years; 4 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
C
Mawc Yough Plant
Serves 133,000 people · Surface water · Full report →
2 health-based violations in the last 5 years; 4 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).