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Water quality report

Santa Rosa, CA
water quality

Drinking water across Santa Rosa’s community water systems, from EPA public records.

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100
Excellent
City-wide average score

41

Systems serving this city

0

With PFAS detected (UCMR5)

0

Above an EPA PFAS limit

8

Unresolved health violations

Across all community water systems EPA records map to Santa Rosa. PFAS figures are from EPA UCMR5 (2023–25) monitoring; not every system was sampled.

Community water systems serving Santa Rosa

SONOMA COUNTY WATER AGENCYCA4910020 100› SANTA ROSA, CITY OF~175,396 people served 100› PENNGROVE WATER COMPANY (PUC)~1,742 people served 100› SONOMA COUNTY CSA 41-FITCH MOUNTAIN~1,265 people served 100› KENWOOD VILLAGE WATER COMPANY (PUC)~1,029 people served 100› CANON MANOR WATER SYSTEM~805 people served 100› WILLOWSIDE MUTUAL WATER COMPANY~448 people served 100› BENNETT RIDGE MUTUAL WATER COMPANY~439 people served 100› SONOMA COUNTY CSA 41-SALMON CREEK~427 people served 100› LEISURE MOBILE HOME PARK~410 people served 100› SONOMA COUNTY CSA 41-JENNER~406 people served 100› HOLLAND HEIGHTS MUTUAL WATER COMPANY~300 people served 100› BRANGER MUTUAL WATER COMPANY, INC.~300 people served 85› SONOMA COUNTY CSA 41-FREESTONE~290 people served 100› NORTH STAR MOBILE HOME PARK~221 people served 100› MOBILE HOME ESTATES~210 people served 85› JAMES COURT WATER SYSTEM~208 people served 85› RANDAL'S RANCHETTE MUTUAL WATER COMPANY~200 people served 85› YULUPA MUTUAL WATER COMPANY~200 people served 100› EL PORTAL MOBILE ESTATES~200 people served 85› SHAMROCK MOBILE HOME PARK~188 people served 100› CASPAR SOUTH SERVICE COMPANY~188 people served 100› SONOMA MOUNTAIN COUNTY WATER DISTRICT~181 people served 100› Kashia~153 people served 100› SUNSET PARK COMMUNITY~141 people served 85› END-O-VALLEY MUTUAL WATER COMPANY~129 people served 100› PARK ROYAL MUTUAL WATER COMPANY~75 people served 100› WILSHIRE HEIGHTS MUTUAL WATER COMPANY~70 people served 100› BLUE LAKES VILLAGE~65 people served 100› MELITA HEIGHTS MUTUAL WATER COMPANY~64 people served 100› MARK WEST ACRES MWC~61 people served 100› DELORES LANE WATER SYSTEM~59 people served 100› ATHENA TERRACE MUTUAL WATER COMPANY~50 people served 100› SUMMIT VIEW RANCH MUTUAL WATER CO.~45 people served 100› INDIAN CREEK TRAILER PARK~43 people served 85› CRYSTALS~40 people served 100› WEST WATER COMPANY (PUC)~40 people served 100› EVERGREEN RETREAT MHP~39 people served 100› CORBY AVENUE APARTMENTS~38 people served 100› LOCH HAVEN MUTUAL WATER COMPANY~26 people served 100› MARK WEST MEADOWS MUTUAL WATER~20 people served 85›

Santa Rosa water FAQ

How is Santa Rosa's water quality scored?

PurityRadar computes a 0–100 score from public EPA records for the community water systems serving Santa Rosa. The city-wide figure shown is the average of those systems.

Where does the data come from?

EPA SDWIS — the federal Safe Drinking Water Information System — covering active community water systems and their health-based violations. Every figure traces back to that public record.

Is this a substitute for testing my tap?

No. System-level data can't account for your home's own plumbing (lead service lines, fixtures). For health decisions, test your tap with a certified lab and confirm with your utility.

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