Is Mount Joy, Pennsylvania tap water safe?
5 water systems report serving Mount Joy. 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
Columbia Water Co
Serves 25,200 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
Elizabethtown Area Water
Serves 19,000 people · Surface water · Full report →
No health-based violations in the last 5 years; 5 monitoring/reporting violations; PFOA/PFOS average above the 4 ppt federal limit: PFOS; Lead 90th percentile below the action level (2025).
A
Mt Joy Boro Auth
Serves 15,261 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
B
Ridgewood Manor MHP
Serves 314 people · Groundwater · Full report →
No health-based violations in the last 5 years; 7 monitoring/reporting violations; No UCMR 5 PFAS results on file; Latest lead 90th percentile on file is from 1996 (older than 5 years, not graded).
B
Lancaster Est
Serves 304 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 3 monitoring/reporting violations; No UCMR 5 PFAS results on file; Latest lead 90th percentile on file is from 1995 (older than 5 years, not graded).