Santa Rosa, CA water quality
Santa Rosa, CA is served by 84 public water systems, serving 193,678 people combined. Across those systems, we count 12 health-based violations in the last 5 years. The worst Tap Grade among them is C.
Water systems serving Santa Rosa
SANTA ROSA, CITY OF
SANTA ROSA, CA · 175,396 served
PENNGROVE WATER COMPANY (PUC)
SANTA ROSA, CA · 1,742 served
SONOMA COUNTY CSA 41-FITCH MOUNTAIN
SANTA ROSA, CA · 1,265 served
KENWOOD VILLAGE WATER COMPANY (PUC)
SANTA ROSA, CA · 1,029 served
SUTTER SANTA ROSA REGIONAL HOSPITAL
SANTA ROSA, CA · 1,000 served
CANON MANOR WATER SYSTEM
SANTA ROSA, CA · 805 served
URJ CAMP NEWMAN
SANTA ROSA, CA · 705 served
JEHOVAH'S WITNESSES HALL
SANTA ROSA, CA · 650 served
OAK GROVE SCHOOL
SANTA ROSA, CA · 500 served
WRIGHT ELEMENTARY SCHOOL
SANTA ROSA, CA · 500 served
WILLOWSIDE SCHOOL
SANTA ROSA, CA · 460 served
WILLOWSIDE MUTUAL WATER COMPANY
SANTA ROSA, CA · 448 served
BENNETT RIDGE MUTUAL WATER COMPANY
SANTA ROSA, CA · 439 served
SONOMA COUNTY CSA 41-SALMON CREEK
SANTA ROSA, CA · 427 served
LEISURE MOBILE HOME PARK
SANTA ROSA, CA · 410 served
SONOMA COUNTY CSA 41-JENNER
SANTA ROSA, CA · 406 served
OLIVET ELEMENTARY SCHOOL
SANTA ROSA, CA · 400 served
BELLEVUE UNION SCH DIST-BELLEVUE SCHOOL
SANTA ROSA, CA · 380 served
NORTHWEST PREP CHARTER SCHOOL
SANTA ROSA, CA · 325 served
SIKH GURDWARA SANTA ROSA
SANTA ROSA, CA · 302 served
SUMMERFIELD WALDORF SCHOOL
SANTA ROSA, CA · 301 served
BRANGER MUTUAL WATER COMPANY, INC.
SANTA ROSA, CA · 300 served
HOLLAND HEIGHTS MUTUAL WATER COMPANY
SANTA ROSA, CA · 300 served
SONOMA COUNTY CSA 41-FREESTONE
SANTA ROSA, CA · 290 served
SONOMA COUNTY PARKS-VET. MEMORIAL BEACH
SANTA ROSA, CA · 252 served
SANTA ROSA GOLF & COUNTRY CLUB
SANTA ROSA, CA · 250 served
NORTH STAR MOBILE HOME PARK
SANTA ROSA, CA · 221 served
MOBILE HOME ESTATES
SANTA ROSA, CA · 210 served
JAMES COURT WATER SYSTEM
SANTA ROSA, CA · 208 served
YULUPA MUTUAL WATER COMPANY
SANTA ROSA, CA · 200 served
RANDAL'S RANCHETTE MUTUAL WATER COMPANY
SANTA ROSA, CA · 200 served
EL PORTAL MOBILE ESTATES
SANTA ROSA, CA · 200 served
SHAMROCK MOBILE HOME PARK
SANTA ROSA, CA · 188 served
SONOMA MOUNTAIN COUNTY WATER DISTRICT
SANTA ROSA, CA · 181 served
SAINT FRANCIS WINERY-WILD OAK VINEYARDS
SANTA ROSA, CA · 160 served
Kashia
Santa Rosa, CA · 153 served
SUNSET PARK COMMUNITY
SANTA ROSA, CA · 141 served
END-O-VALLEY MUTUAL WATER COMPANY
SANTA ROSA, CA · 129 served
CLOVERLEAF RANCH SUMMER CAMP
SANTA ROSA, CA · 100 served
SAFARI WEST
SANTA ROSA, CA · 99 served
FRIEDMAN BROTHERS HARDWARE
SANTA ROSA, CA · 95 served
SARALEE'S VINEYARD AND TASTING ROOM
SANTA ROSA, CA · 84 served
SANTA ROSA LIQUOR AND DELI
SANTA ROSA, CA · 75 served
PARK ROYAL MUTUAL WATER COMPANY
SANTA ROSA, CA · 75 served
LA CANTERA RACQUET CLUB
SANTA ROSA, CA · 75 served
RUSSIAN RIVER WINERY
SANTA ROSA, CA · 73 served
SONOMA COUNTY PARKS-STILLWATER COVE
SANTA ROSA, CA · 70 served
WILSHIRE HEIGHTS MUTUAL WATER COMPANY
SANTA ROSA, CA · 70 served
MELITA HEIGHTS MUTUAL WATER COMPANY
SANTA ROSA, CA · 64 served
MARK WEST ACRES MWC
SANTA ROSA, CA · 61 served
DELORES LANE WATER SYSTEM
SANTA ROSA, CA · 59 served
LA HACIENDA DEL TORO
SANTA ROSA, CA · 58 served
SONOMA COUNTY PARKS-PUTNAM PARK
SANTA ROSA, CA · 52 served
LAKE SONOMA MARINA
SANTA ROSA, CA · 51 served
ATHENA TERRACE MUTUAL WATER COMPANY
SANTA ROSA, CA · 50 served
GRAY WATER SYSTEM
SANTA ROSA, CA · 50 served
SONOMA COUNTY PARKS-RIVERFRONT PARK
SANTA ROSA, CA · 50 served
SUMMIT VIEW RANCH MUTUAL WATER CO.
SANTA ROSA, CA · 45 served
KENDALL-JACKSON WINE CENTER
SANTA ROSA, CA · 45 served
CAMPOBELLO
SANTA, CA · 45 served
SUGARLOAF WATER SYSTEM
SANTA ROSA, CA · 42 served
CHILDKIND LAGUNA PRESCHOOL
SANTA ROSA, CA · 42 served
WEST WATER COMPANY (PUC)
SANTA ROSA, CA · 40 served
TRUCK TOPS USA
SANTA ROSA, CA · 40 served
CRYSTALS
SANTA ROSA, CA · 40 served
CORBY AVENUE APARTMENTS
SANTA ROSA, CA · 38 served
HUMANE SOCIETY OF SONOMA COUNTY
SANTA ROSA, CA · 37 served
FRITSCH INDUSTRIAL PARK
SANTA ROSA, CA · 36 served
OAK GROVE SCHOOL DISTRICT OFFICE
SANTA ROSA, CA · 36 served
UNITED RENTALS
SANTA ROSA, CA · 35 served
HOOK & LADDER VINEYARDS AND WINERY
SANTA ROSA, CA · 35 served
PEPPERWOOD ENVIRONMENTAL CENTER
SANTA ROSA, CA · 35 served
SONOMA MOUNTAIN ZEN CENTER
SANTA ROSA, CA · 35 served
PARADISE RIDGE WINERY
SANTA ROSA, CA · 35 served
BOISSET - DE LOACH WINERY
SANTA ROSA, CA · 33 served
FIELD STONE WINERY
SANTA ROSA, CA · 27 served
SUNCE WINERY
SANTA ROSA, CA · 26 served
LOCH HAVEN MUTUAL WATER COMPANY
SANTA ROSA, CA · 26 served
STRIPE N SEAL
SANTA ROSA, CA · 26 served
FOPPIANO VINEYARDS
SANTA ROSA, CA · 25 served
SAINTS PETER & PAUL RUSSIAN CHURCH
SANTA ROSA, CA · 25 served
MICHAEL LUCAS WATER SYSTEM
SANTA ROSA, CA · 25 served
MARK WEST MEADOWS MUTUAL WATER
SANTA ROSA, CA · 20 served
SONOMA COUNTY WATER AGENCY
SANTA ROSA, CA · 0 served
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Is Santa Rosa, CA tap water safe to drink?
84 public water systems serve Santa Rosa, CA, with 12 health-based violations in the last 5 years across them. The worst Tap Grade among them is C.
Does Santa Rosa's water have lead in it?
The most recent 90th-percentile lead sample is 8 ppb, versus the EPA action level of 15 ppb.
Has PFAS been detected in Santa Rosa's water?
These systems were tested under UCMR5 and no PFAS was detected above the reporting limit in the analytes we track.
Other cities in California
See all of California →Source: EPA SDWIS/ECHO · Data as of 2026Q2