Is Plymouth, Connecticut tap water safe?
3 water systems report serving Plymouth. Your water depends on which one serves your address. Check your bill if unsure.
B
Bristol Water Department
Serves 52,079 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: PFOA; Lead 90th percentile below the action level (2025).
A
Ctwc - Naugatuck Reg-Terryville System
Serves 5,607 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 (2024).
A
Ctwc - Naugatuck Reg-Thomaston System
Serves 3,789 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 (2024).