Is Cottage Grove, Oregon tap water safe?
6 water systems report serving Cottage Grove. 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 Cottage Grove
Serves 10,879 people · Surface water · Full report →
No health-based violations in the last 5 years; 7 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2024).
A
Lamontai Improvement WTR Dist
Serves 255 people · Groundwater · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; No UCMR 5 PFAS results on file; Latest lead 90th percentile on file is from 2020 (older than 5 years, not graded).
D
London Water Co-Op
Serves 63 people · Surface water · Full report →
55 health-based violations in the last 5 years; 82 monitoring/reporting violations; 4 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
A
Hilltop Improvement District
Serves 45 people · Groundwater · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; No UCMR 5 PFAS results on file; Latest lead 90th percentile on file is from 2020 (older than 5 years, not graded).
C
Mint Acres Water Co-Op
Serves 35 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 7 monitoring/reporting violations; 1 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
C
Emerald Valley Mh & RV Park
Serves 31 people · Groundwater · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; No UCMR 5 PFAS results on file; Lead 90th percentile ABOVE the action level (2024).