Is Columbia City, Oregon tap water safe?
5 water systems report serving Columbia City. 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
City of St Helens
Serves 13,410 people · Surface water · Full report →
No health-based violations in the last 5 years; 8 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A
Columbia City Mun Waterworks
Serves 1,995 people · Groundwater · Full report →
No health-based violations in the last 5 years; 4 monitoring/reporting violations; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2024).
D
Deer Island Waterworks
Serves 90 people · Groundwater · Full report →
3 health-based violations in the last 5 years; 46 monitoring/reporting violations; 12 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2026).
D
Deer Island Heights WS
Serves 60 people · Groundwater · Full report →
3 health-based violations in the last 5 years; 20 monitoring/reporting violations; 5 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
B
Deer Island Village MHP
Serves 50 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 4 monitoring/reporting violations; 2 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2024).