Local water quality
Water quality in Napa, California
14 public water systems · EPA data
The bottom line
EPA records for the water serving Napa, California show Lead, Copper, Total Trihalomethanes and more. A filter independently certified to reduce those exact contaminants is the most direct fix.
What's in Napa's water
Contaminants EPA has recorded across Napa's water systems, and how many certified filters remove each.
Water systems serving Napa
Open a system for its full report — measured levels vs. federal limits, PFAS, and the certified filters that remove each contaminant.
NAPA, CITY OF
84,804 people served
1 contaminant · report →
BERRYESSA HIGHLANDS
715 people served
3 contaminants · report →
DOMAINE CARNEROS
652 people served
3 contaminants · report →
BERRYESSA ESTATES (LBRID)
474 people served
2 contaminants · report →
NAPA VALLEY COUNTRY CLUB
400 people served
2 contaminants · report →
HESS WINERY
250 people served
2 contaminants · report →
WELCOME GRANGE HALL
200 people served
2 contaminants · report →
PINE RIDGE WINERY
75 people served
1 contaminant · report →
NAPA RIVER RANCH
70 people served
2 contaminants · report →
LAIRD FAMILY ESTATE
55 people served
2 contaminants · report →
ETUDE WINES
50 people served
1 contaminant · report →
MILTON ROAD WATER COMPANY
44 people served
3 contaminants · report →
R RANCH AT THE LAKE
28 people served
2 contaminants · report →
DARIOUSH WINERY
25 people served
2 contaminants · report →
Filter your Napa water
Match a certified filter to what's actually in your water — a filter certified for lead may do nothing for PFAS or fluoride.