Is Knightsen, California tap water safe?
4 water systems report serving Knightsen. 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
Orwood Resort
Serves 350 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 2 monitoring/reporting violations; 3 not yet resolved; No UCMR 5 PFAS results on file; Latest lead 90th percentile on file is from 2020 (older than 5 years, not graded).
D
Delta Mutual Water Company
Serves 333 people · Groundwater · Full report →
13 health-based violations in the last 5 years; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
D
Oakley Mutual Water Company
Serves 170 people · Groundwater · Full report →
19 health-based violations in the last 5 years; 1 monitoring/reporting violation; 2 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
A
Knightsen Community Water System
Serves 73 people · Groundwater · Full report →
No health-based violations in the last 5 years; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2022).