Utilities in California
18,760 systems (SDWIS/Fed snapshot). Search or browse pages — open any row for PFAS monitoring, violation counts, and filter recommendations.
Is your public water system listed? Claim your free listing →
Claim Your Listing →Showing page 232 of 376 (18,760 systems)
OMYA CALIFORNIA, A DIVISION OF OMYA INC
CA3601064 · 100 served
ON THE Y
CA3400459 · 60 served
ONE ELEVEN TRAILER PARK
CA3301475 · 45 served
ONE HOPE WINERY
CA2800068 · 110 served
ONE MILE DAM REC AREA
CA0400112 · 25 served
ONE STOP MARKET
CA5101014 · 25 served
ONE STOP WS
CA5000457 · 50 served
ONE-ELEVEN TRUCK PLAZA
CA1300625 · 30 served
ONEIL CREEK CAMPGROUND
CA4700613 · 145 served
ONENESS INSTITUTE
CA1700737 · 42 served
ONION VALLEY CAFE 2
CA1400093 · 50 served
ONION VALLEY CAMPGROUND
CA1400190 · 25 served
ONITSUKA BROTHERS WS
CA2700156 · 50 served
ONO STORE
CA4500031 · 75 served
Ontario Christian School
CA3600188 · 600 served
ONTARIO MUNICIPAL UTILITIES COMPANY
CA3610034 · 185,010 served
Oobus Orchards
CA5200622 · 25 served
OP MURPHY & SONS WS
CA2702830 · 25 served
OPAL FRY AND SON
CA1500216 · 33 served
OPEN COUNTRY SWAP MEET
CA5400918 · 300 served
OPEN SKY RANCH
CA1000643 · 40 served
OPHIR ELEMENTARY SCHOOL WATER SYSTEM
CA3100083 · 260 served
OPHIR GARDENS
CA3100063 · 45 served
OPTIMISTS VOLUNTEERS FOR YOUTH
CA4100552 · 207 served
OPUS ONE WINERY
CA2801026 · 100 served
ORANGE BLOSSOM JUNCTION
CA5400687 · 100 served
ORANGE BLOSSOM RECREATION AREA
CA5000298 · 26 served
ORANGE CENTER SCHOOL
CA1000276 · 410 served
ORANGE COAST YELLOW CAB CO
CA3000780 · 140 served
ORANGE GROVE RV PARK
CA1502680 · 205 served
ORANGE KING DRIVE INN
CA2000610 · 200 served
ORANGE PARK ACRES MWC
CA3010028 · 0 served
ORANGE VALE WATER COMPANY
CA3410016 · 16,861 served
ORCHARD ACRES
CA3500564 · 10 served
ORCHARD ACRES SUBDIVISION
CA3502564 · 45 served
ORCHARD DALE WATER DISTRICT
CA1910101 · 25,000 served
ORCHARD LANE MANOR MOBILE HOME
CA4400775 · 25 served
ORCHARD LANE WATER SYSTEM #1
CA2700668 · 28 served
ORCHARD LANE WATER SYSTEM #3
CA2700670 · 21 served
ORCHARD LN WS #02
CA2700669 · 32 served
ORCHARD LN WS #09
CA2702165 · 30 served
ORCHARD MOBILE HOME PARK
CA4900726 · 0 served
ORCHARD VILLAGE MHP
CA5000057 · 75 served
ORD BEND PARK
CA1100515 · 0 served
ORD COMMUNITY WATER SYSTEM - INACTIVE
CA2710701 · 0 served
OREGON CREEK RECREATION AREA
CA5800817 · 68 served
OREGON HOUSE GROCERY
CA5800868 · 40 served
ORGANIQ
CA5000458 · 36 served
ORICK C.S.D.
CA1200701 · 396 served
ORICK TRAILER PARK
CA1200596 · 100 served