Is Yacolt, Washington tap water safe?
3 water systems report serving Yacolt. 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
Clark Public Utilities
Serves 153,526 people · Groundwater · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; PFOA/PFOS average above the 4 ppt federal limit: PFOS; Lead 90th percentile below the action level (2025).
B
Yacolt
Serves 3,034 people · Groundwater · Full report →
1 health-based violation in the last 5 years; No UCMR 5 PFAS results on file; Latest lead 90th percentile on file is from 2018 (older than 5 years, not graded).
A
Larch Corrections Center
Serves 705 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 2020 (older than 5 years, not graded).