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ZIP Code 95370 Water Quality
California · 37,743 people served · 14 water systems
B
GoodZIP code 95370 is in California and is a small city from a drinking-water-service perspective, with 37,743 people served by 14 EPA-registered public water systems. It corresponds to SONORA.
Within ZIP code 95370, the EPA Safe Drinking Water Information System (SDWIS) records 2 health-based violations during the past five years across 14 water systems serving this postal area. The grade of B reflects the aggregate compliance pattern, not the current daily water quality.
Last updated: 2026-05-18 · Source: EPA SDWIS
ZIP Code Location
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Cities in ZIP 95370
Water Systems Serving 95370
GOLDEN SIERRA ESTATES_FKA MOTHER LODE
PWSID: CA5500125
210 served
PHOENIX LAKE ESTATES CC MWC
PWSID: CA5510026
1,168 served
SONORA MEADOWS MUTUAL WTR CO
PWSID: CA5510023
1,123 served
SLIDE INN SNOWBOWL WATER CO
PWSID: CA5500077
417 served
BELLEVIEW OAKS MUTUAL WATER CO
PWSID: CA5500042
468 served
TUD - UPPER BASIN WATER SYSTEM
PWSID: CA5510012
13,280 served
TUD - COLUMBIA WATER SYSTEM
PWSID: CA5510013
5,463 served
TUD-APPLE VALLEY ESTATES
PWSID: CA5510028
826 served
TUD-WARDS FERRY RANCHES
PWSID: CA5500363
62 served
TUD - SONORA/JAMESTOWN WATER SYSTEM
PWSID: CA5510001
11,054 served
TUD - PONDEROSA
PWSID: CA5510002
1,767 served
TUD - TUOLUMNE WATER SYSTEM
PWSID: CA5510003
1,761 served
TUD-PEACEFUL PINES WATER SYSTEM
PWSID: CA5510021
92 served
PONDEROSA MOBILE HOME PARK
PWSID: CA5500092
52 served
About ZIP-code water data
Postal-code level water quality data is built up from the underlying water systems — multiple ZIPs may share a single utility, and a single ZIP can span multiple utilities. For property-level information, contact the specific utility serving your address. EPA data on this page was last refreshed on 2026-05-18.
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