Drinking Water Systems Reported for ZIP 94559
NAPA, California — 5 water systems are associated with this ZIP in EPA service-area data
Largest Reported System
NAPA RIVER RANCH
PWSID: CA2800531
11 EPA violation records in the five-year period ending June 30, 2026
D
Several health-based records
TapScore compliance-history grade
Other Systems Reported for This ZIP
NAPA, CITY OF
84,804 served2 historical records
A
BERRYESSA ESTATES (LBRID)
474 served27 historical records
A
BERRYESSA HIGHLANDS
715 served4 historical records
A
VETERANS HOME OF CALIFORNIA
1,000 served0 historical records
A