Utilities in California
18,760 systems (SDWIS/Fed snapshot). Search or browse pages — open any row for PFAS monitoring, violation counts, and filter recommendations.
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OLD GILROY SERVICE STATION
CA4300784 · 8 served
OLD ISABELLA ROAD WATER SYSTEM
CA1502684 · 90 served
OLD LEWISTON INN
CA5301023 · 0 served
OLD MACDONALD S FARM
CA3400203 · 25 served
OLD MILL IMPR ASSOC
CA3600447 · 15 served
OLD NATIVIDAD RD WS #01
CA2701232 · 300 served
OLD OAK RANCH
CA5500020 · 217 served
OLD ORCHARD R.V. PARK
CA1100460 · 25 served
OLD PIRATE LANE WATER CO
CA3000820 · 0 served
Old Ranch House-OOB
CA3303103 · 25 served
OLD RIVER GOLF COURSE
CA3901447 · 25 served
OLD RIVER MUTUAL WATER COMPANY
CA1500096 · 130 served
OLD SHASTA DRINKING FOUNTAIN
CA4500287 · 50 served
OLD STAGE MOBILEHOME PARK
CA0900662 · 70 served
OLD STAGE RD WS #21
CA2702708 · 25 served
OLD STAGE ROAD WATER SYSTEM -
CA2700987 · 40 served
OLD STAGE ROAD WATER SYSTEM 10
CA2701504 · 90 served
OLD STATION G.S., BIG BAR CMPG
CA5300095 · 50 served
OLD STATION GUARDS STATION, BIG BAR C.G.
CA5304005 · 50 served
OLD SUGAR MILL WINERY
CA5700508 · 50 served
OLD TIMERS MUTUAL
CA1900153 · 51 served
OLD TOWN SALOON & DINING HOUSE
CA2000645 · 50 served
OLD TOWN WATER SYSTEM
CA0800830 · 50 served
OLD WEST CAFE
CA1200760 · 25 served
OLD WEST SALOON & DINNER HOUSE
CA3200004 · 25 served
OLD WINERY COMPLEX - INACTIVE
CA3901199 · 250 served
OLDE TOWNE
CA3900799 · 25 served
OLGA KRUSE
CA4300625 · 25 served
OLIVARES FARMS WATER SYSTEM
CA2400335 · 28 served
OLIVAREZ HONEY BEES
CA1105005 · 131 served
OLIVE CREST
CA4200639 · 145 served
OLIVE DELL RANCH
CA3600187 · 350 served
OLIVE LANE MOBILEHOME PARK
CA5000055 · 153 served
Olive Tree Motel
CA5200658 · 35 served
OLIVEHURST PUBLIC U.D.
CA5810003 · 16,595 served
OLIVENHAIN MWD
CA3710029 · 86,458 served
OLIVER'S CAFE
CA1800626 · 25 served
OLIVERS GROCERY
CA3100114 · 25 served
OLIVET ELEMENTARY SCHOOL
CA4900699 · 400 served
OLIVET UNIVERSITY
CA3301863 · 212 served
OLLIE FRAZIER
CA1100547 · 125 served
OLMO MEADOW BUTANO STATE PARK
CA4110308 · 25 served
OLSON TRACT WATER ASSOCIATION
CA0900307 · 25 served
OLYMPIA MOBILODGE
CA3410022 · 450 served
OLYMPIA MUTUAL WATER COMPANY
CA4400581 · 155 served
OLYMPIA PARK WATER SYSTEM
CA2904010 · 35 served
OLYMPIC VALLEY MWC
CA3110019 · 756 served
OLYMPIC VALLEY PSD
CA3110020 · 1,165 served
OM SCOTT & SONS/HYPONEX CORP
CA3901368 · 50 served
OMELETTE HOUSE
CA3901003 · 350 served