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Water quality report

Chico, CA
water quality

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

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98

Excellent

City-wide average score

28

Systems serving this city

0

With PFAS detected (UCMR5)

0

Above an EPA PFAS limit

4

Unresolved health violations

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

Community water systems serving Chico

DEL ORO WATER CO.-PARADISE PINES~10,940 people served 100› DEL ORO WATER CO-FERNDALE~1,662 people served 100› DEL ORO WATER COMPANY - STRAWBERRY DIV.~1,295 people served 100› DEL ORO RIVER ISLAND SERV TERR #1~1,280 people served 100› DEL ORO CALIFORNIA PINES DISTRICT~944 people served 100› DEL ORO WATER CO.-JOHNSON PARK~904 people served 100› DEL ORO WATER CO.-LIME SADDLE MARINA~895 people served 100› DEL ORO TRAVER DISTRICT~657 people served 100› DEL ORO WATER CO.-STIRLING BLUFFS~521 people served 100› GRIDLEY FARM LABOR HOUSING~460 people served 100› BUTTE CREEK ESTATES MUTUAL WATER CO~399 people served 100› BENBOW-DEL ORO W.C.~370 people served 100› DEL ORO WATER CO.-MAGALIA~340 people served 100› DEL ORO WC - COUNTRY ESTATES DIST~297 people served 100› GRAN MUTUAL WATER CO~290 people served 100› DEL ORO WC - BLACK BUTTE DISTRICT~277 people served 100› ALMOND GROVE MOBILE PARK~253 people served 85› DEL ORO WATER CO. - HAT CREEK DISTRICT~185 people served 100› DEL ORO WC - ARBUCKLE DISTRICT~185 people served 100› KEEFER CREEK ESTATES~160 people served 100› SIERRA MOON MUTUAL WATER COMPANY~120 people served 85› DEL ORO WC - LARKSPUR MEADOWS~116 people served 100› DEL ORO WATER COMPANY - BUZZTAIL DIST.~106 people served 100› DEL ORO WATER CO - METROPOLITAN DISTRICT~92 people served 100› WEST COTTONWOOD APARTMENTS~90 people served 85› DEL ORO RIVER ISLAND SERV TERR #2~89 people served 100› BLUE OAK TERRACE MUTUAL~81 people served 100› HARTLEY MUTUAL WATER SYSTEM~41 people served 85›

Chico water FAQ

How is Chico's water quality scored?

PurityRadar computes a 0–100 score from public EPA records for the community water systems serving Chico. 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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