Drinking Water Systems Reported for ZIP 94558
NAPA, California — 12 water systems are associated with this ZIP in EPA service-area data
Largest Reported System
BERRYESSA PINES WATER SYSTEM
PWSID: CA2810009
2 EPA violation records in the five-year period ending June 30, 2026
B
Few non-health records
TapScore compliance-history grade
Other Systems Reported for This ZIP
MEYERS WATER CO.
250 served13 historical records
A
SPANISH FLAT WATER DISTRICT
230 served0 historical records
A
CIRCLE OAKS WATER DISTRICT
500 served3 historical records
A
RIVER RANCH FARM WORKER CENTER
66 served0 historical records
A
CALISTOGA FARM WORKER CENTER
65 served1 historical record
A
MONDAVI FARM WORKER CENTER
66 served1 historical record
A
EDDY DRIVE
48 served0 historical records
A
MILTON ROAD WATER COMPANY
44 served13 historical records
A
R RANCH AT THE LAKE
28 served15 historical records5 recent
C
HESS WINERY
250 served6 historical records2 recent
C
BUCKTAIL MUTUAL WATER COMPANY
42 served3 historical records1 recent
B