Is Falmouth, Massachusetts tap water safe?
2 water systems report serving Falmouth. Your water depends on which one serves your address. Check your bill if unsure.
A
Falmouth Water Dept
Serves 97,551 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).
B
Otis Air National Guard Base
Serves 6,000 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 3 monitoring/reporting violations; 2 not yet resolved; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2024).