Is Coulee Dam, Washington tap water safe?
1 water system report serving Coulee Dam. 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.
C
Nespelem Agency
Serves 445 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 11 monitoring/reporting violations; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2024).