Is Yountville, California tap water safe?
4 water systems report serving Yountville. 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.
A
Town of Yountville
Serves 2,785 people · Surface water · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2024).
B
Veterans Home of California
Serves 1,000 people · Surface water · Full report →
1 health-based violation 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).
B
Hess Winery
Serves 100 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 2 monitoring/reporting violations; 2 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2026).
A
Mondavi Farm Worker Center
Serves 66 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 (2023).