Is Carlisle, Pennsylvania tap water safe?
10 water systems report serving Carlisle. 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
Pa American Water Co West
Serves 105,127 people · Surface water · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; PFOA/PFOS average above the 4 ppt federal limit: PFOS; Lead 90th percentile below the action level (2025).
A
Pa Amer Water Co
Serves 50,200 people · Surface water · 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 (2025).
C
Carlisle Water Trmt Plt
Serves 26,000 people · Surface water · Full report →
No health-based violations in the last 5 years; 12 monitoring/reporting violations; PFOA/PFOS average above the 4 ppt federal limit: PFOS; Lead 90th percentile below the action level (2025).
C
South Middleton Twp Water Auth
Serves 11,695 people · Surface water · Full report →
1 health-based violation in the last 5 years; 14 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
C
N Middleton Water Auth
Serves 8,455 people · Surface water · Full report →
No health-based violations in the last 5 years; 3 monitoring/reporting violations; PFOA/PFOS average above the 4 ppt federal limit: PFOS; Lead 90th percentile below the action level (2025).
B
Middlesex Twp Muni Auth
Serves 3,527 people · Groundwater · Full report →
No health-based violations in the last 5 years; 9 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
B
Us Army Garrison
Serves 1,700 people · Groundwater · Full report →
No health-based violations in the last 5 years; 8 monitoring/reporting violations; No UCMR 5 PFAS results on file; Latest lead 90th percentile on file is from 2016 (older than 5 years, not graded).
A
Dickinson Twp Munic Auth
Serves 250 people · Groundwater · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; No UCMR 5 PFAS results on file.
B
Harmony Estates MHP
Serves 80 people · Groundwater · Full report →
No health-based violations in the last 5 years; 52 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).
A
Hillside MHP
Serves 54 people · Groundwater · Full report →
No health-based violations in the last 5 years; No UCMR 5 PFAS results on file; Latest lead 90th percentile on file is from 1996 (older than 5 years, not graded).