Drinking Water Systems in CHICO, California
28 water systems are reported for this city, with a combined service population of 23,356. The systems have 15 EPA violation records in the five-year period ending June 30, 2026.
Water Systems Serving CHICO
GRAN MUTUAL WATER CO
290 served4 historical records
A
HARTLEY MUTUAL WATER SYSTEM
41 served5 historical records
A
GRIDLEY FARM LABOR HOUSING
460 served5 historical records1 recent
B
BUTTE CREEK ESTATES MUTUAL WATER CO
399 served10 historical records2 recent
B
SIERRA MOON MUTUAL WATER COMPANY
450 served6 historical records1 recent
B
WEST COTTONWOOD APARTMENTS
90 served0 historical records
A
DEL ORO RIVER ISLAND SERV TERR #2
89 served8 historical records
A
DEL ORO CALIFORNIA PINES DISTRICT
944 served6 historical records
A
DEL ORO TRAVER DISTRICT
657 served6 historical records
A
DEL ORO RIVER ISLAND SERV TERR #1
1,280 served35 historical records5 recent
D
BLUE OAK TERRACE MUTUAL
81 served7 historical records1 recent
B
KEEFER CREEK ESTATES
160 served5 historical records
A
DEL ORO WATER CO.-JOHNSON PARK
904 served4 historical records
A
DEL ORO WATER CO-FERNDALE
1,662 served0 historical records
A
BENBOW-DEL ORO W.C.
347 served28 historical records
A
DEL ORO WC - BLACK BUTTE DISTRICT
277 served3 historical records
A
DEL ORO WATER CO.-STIRLING BLUFFS
521 served2 historical records
A
DEL ORO WATER CO.-LIME SADDLE MARINA
895 served1 historical record
A
DEL ORO WATER CO.-MAGALIA
340 served5 historical records1 recent
B
DEL ORO WATER CO.-PARADISE PINES
10,940 served5 historical records
A
DEL ORO WC - ARBUCKLE DISTRICT
185 served0 historical records
A
DEL ORO WATER CO - METROPOLITAN DISTRICT
92 served9 historical records
A
DEL ORO WC - COUNTRY ESTATES DIST
297 served9 historical records
A
DEL ORO WATER COMPANY - STRAWBERRY DIV.
1,295 served9 historical records1 recent
C
DEL ORO WC - LARKSPUR MEADOWS
116 served7 historical records
A
DEL ORO WATER CO. - HAT CREEK DISTRICT
185 served27 historical records
A
DEL ORO WATER COMPANY - BUZZTAIL DIST.
106 served7 historical records
A
ALMOND GROVE MOBILE PARK
253 served12 historical records3 recent
C
EPA Contaminant Categories in Historical Violation Records
Coliform (TCR)26 records
Nitrate25 records
Gross Alpha24 records
Uranium20 records
Surface Water Treatment Rule6 records
Revised Total Coliform Rule5 records
Nitrite5 records
Consumer Confidence Rule4 records
Lead and Copper Rule4 records
Benzene3 records
Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.