Stockton, CA water quality
Stockton, CA is served by 97 public water systems, serving 229,850 people combined. Across those systems, we count 72 health-based violations in the last 5 years. The worst Tap Grade among them is F.
Water systems serving Stockton
CITY OF STOCKTON
STOCKTON, CA · 191,302 served
SAN JOAQUIN COUNTY - LINCOLN VILLAGE
STOCKTON, CA · 5,841 served
CDCR CALIFORNIA HEALTH CARE FACILITY
STOCKTON, CA · 5,551 served
SAN JOAQUIN COUNTY-MOKELUMNE ACRES
STOCKTON, CA · 3,802 served
SAN JOAQUIN COUNTY - COLONIAL HEIGHTS
STOCKTON, CA · 1,841 served
OAKWOOD LAKE WATER DISTRICT-SUBDIVISION
STOCKTON, CA · 1,479 served
DEFENSE DISTRIB. DEPOT - TRACY SITE
STOCKTON, CA · 1,200 served
FAIROAKS PWS #44
STOCKTON, CA · 1,172 served
SAN JOAQUIN COUNTY-RAYMUS VILLAGE
STOCKTON, CA · 1,086 served
HORIZON CHRISTIAN FELLOWSHIP
STOCKTON, CA · 1,000 served
SMK CHEVRON
MORADA, CA · 1,000 served
KING ISLAND RESORT PWS
STOCKTON, CA · 1,000 served
SAN JOAQUIN COUNTY - THORNTON
STOCKTON, CA · 964 served
ST MARYS HIGH SCHOOL
STOCKTON, CA · 950 served
SAN JOAQUIN COUNTY - WILKINSON MANOR
STOCKTON, CA · 851 served
STOCKTON VERDE MOBILE HOME PARK
STOCKTON, CA · 711 served
RODEWAY INN
STOCKTON, CA · 600 served
MORADA ESTATES N PWS #46
STOCKTON, CA · 426 served
WIENERSCHNITZEL
STOCKTON, CA · 400 served
BEL AIR MOBILE ESTATE
STOCKTON, CA · 325 served
SANTOS RANCH PWS #5-CSA #35
STOCKTON, CA · 320 served
SAN JOAQUIN WATER WORKS #2
STOCKTON, CA · 310 served
DENNY BOYS WATER SYSTEM
STOCKTON, CA · 300 served
MORADA ESTATES PWS
STOCKTON, CA · 290 served
ALPINE MEATS INC
STOCKTON, CA · 270 served
CLEMENTS WATER WORKS #43
STOCKTON, CA · 264 served
TWIN OAKS MOBILE PARK
STOCKTON, CA · 238 served
SHADED TERRACE PWS
STOCKTON, CA · 238 served
KING ISLAND TRAILER PARK WATER SYSTEM
STOCKTON, CA · 236 served
ELKHORN ESTATES WATER SYSTEM
STOCKTON, CA · 234 served
ACAMPO WATER SYSTEM
STOCKTON, CA · 231 served
SAN JUAN VISTA
STOCKTON, CA · 201 served
PARADISE POINT MARINA
STOCKTON, CA · 200 served
CARIBOU MOBILE PARK PWS
STOCKTON, CA · 180 served
PAR COUNTRY ESTATES CSA-16
STOCKTON, CA · 178 served
GAYLA MANOR PWS
STOCKTON, CA · 178 served
RANCHO SAN JOAQUIN WATER SYS
STOCKTON, CA · 172 served
COLLEGEVILLE MARKET & CAFE
STOCKTON, CA · 150 served
ST JOSEPHS HOSPITAL
STOCKTON, CA · 150 served
FAIRWAY ESTATES PWS CSA-18
STOCKTON, CA · 149 served
CORRAL HOLLOW PWS
STOCKTON, CA · 145 served
FLAG CITY WATER SYSTEM
STOCKTON, CA · 135 served
MOBILE VILLAS TRAILER PARK
STOCKTON, CA · 130 served
WILKINSON MANOR A-ZONE PWS
STOCKTON, CA · 125 served
BIG WHEEL MOBILE HOME PARK
STOCKTON, CA · 120 served
SPRING CREEK ESTATES PWS
STOCKTON, CA · 119 served
MORADA MANOR WATER SYSTEM
STOCKTON, CA · 112 served
FRESH INNOVATIONS LLC
STOCKTON, CA · 111 served
SAN JOAQUIN FAIR - 2ND DISTRICT
STOCKTON, CA · 110 served
WALNUT ACRES
STOCKTON, CA · 106 served
MORADA ACRES WATER SYSTEM
STOCKTON, CA · 105 served
NEW 99 SPEEDWAY WATER SYSTEM
STOCKTON, CA · 100 served
BEREA BAPTIST CHURCH STOCKTON CA
STOCKTON, CA · 100 served
J M EAGLE (WS)
STOCKTON, CA · 100 served
HOLIDAY HARBOR MARINA
STOCKTON, CA · 100 served
CHERRY LANE TRAILER PARK
STOCKTON, CA · 100 served
TURNER CUT RESORT
STOCKTON, CA · 100 served
OAKMOORE CONGRE OF JEHOVAH WIT
STOCKTON, CA · 100 served
MAURLAND MANOR WATER SYSTEM
STOCKTON, CA · 92 served
COZAD WATER SYSTEM
STOCKTON, CA · 85 served
SJ COUNTY-REDWOOD SCHOOL
STOCKTON, CA · 83 served
STOCKTON BAPTIST CHURCH
STOCKTON, CA · 78 served
EL RANCHO MOTEL
STOCKTON, CA · 76 served
MANTECA INDUSTRIAL PRK CSA-30
STOCKTON, CA · 76 served
A1 WINSTONS MOBILE HOME PARK
STOCKTON, CA · 75 served
WAYSIDE MOTEL APARTMENTS WTR SYS
STOCKTON, CA · 70 served
SUNNYSIDE ESTATES WATER SYSTEM
STOCKTON, CA · 69 served
BETHANY TEMPLE WATER SYSTEM
STOCKTON, CA · 65 served
ALMOND PARK WATER SYSTEM
STOCKTON, CA · 60 served
EL RIO MOBILE HOME PARK
STOCKTON, CA · 60 served
TOWN & COUNTRY INN
STOCKTON, CA · 55 served
TIKI LAGOON RESORT & MARINA
STOCKTON, CA · 50 served
ITALIAN ATHLETIC CLUB
STOCKTON, CA · 50 served
WINDMILL COVE RESORT/MARINA LLC
STOCKTON, CA · 50 served
WATERLOO GUN & BOCCE CLUB
STOCKTON, CA · 50 served
STOCKTON EAST WATER DISTRICT
STOCKTON, CA · 50 served
VALIMET INC
STOCKTON, CA · 48 served
KNAPHEIDE TRUCK EQUIPMENT COMPANY
STOCKTON, CA · 40 served
WINE COUNTRY APARTMENTS
STOCKTON, CA · 40 served
ST FRANCIS MOTEL
STOCKTON, CA · 40 served
ENCLAVE AT THE DELTA
STOCKTON, CA · 39 served
FREMONT ONE
STOCKTON, CA · 39 served
V & P TRAILER COURT WATER SYSTEM
STOCKTON, CA · 35 served
DURHAM FERRY COMMUNITY SCHOOL
STOCKTON, CA · 31 served
ZUCKERMAN, ROSCOE 39-316
STOCKTON, CA · 30 served
GERMAN GUYS
STOCKTON, CA · 29 served
BULLFROG LANDING MARINA
STOCKTON, CA · 27 served
LOVELACE TRANSFER STATION
STOCKTON, CA · 25 served
WATERLOO CALIFORNIA RESTAURANT
STOCKTON, CA · 25 served
DOWN RIVER AN ITW COMPANY
STOCKTON, CA · 25 served
ST MICHAELS WATER SYSTEM
STOCKTON, CA · 25 served
KOREAN PRESBYTERIAN CHURCH
STOCKTON, CA · 25 served
CALIFORNIA FRUIT PROCESSORS
STOCKTON, CA · 25 served
STEVENS MOTEL WATER SYSTEM
STOCKTON, CA · 25 served
LOWER SAC PLAZA
STOCKTON, CA · 25 served
ZUCKERMAN HERITAGE-MCDONALD
STOCKTON, CA · 25 served
O-G PACKING CO
STOCKTON, CA · 25 served
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Is Stockton, CA tap water safe to drink?
97 public water systems serve Stockton, CA, with 72 health-based violations in the last 5 years across them. The worst Tap Grade among them is F. A Tap Grade summarizes public EPA compliance records; it is not a determination that water is safe or unsafe to drink.
Does Stockton's water have lead in it?
The most recent 90th-percentile lead sample is 13 ppb, versus the EPA action level of 15 ppb.
Has PFAS been detected in Stockton's water?
Yes — at least one water system serving Stockton has detected PFAS under UCMR5.
Other cities in California
See all of California →Source: EPA SDWIS/ECHO · Data as of 2026Q2
TapGraded presents public EPA data for information only — it is not health advice and not a determination that any water is safe or unsafe to drink. For health concerns, contact your water utility or local health department.