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AquaCensus

Contra Costa County, California — public water systems

84 active public water systems serve Contra Costa County, reporting 565K people served.

Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

84

Population served

565K

Community systems

39

Groundwater share

84.5%

Water systems in Contra Costa County

Active public water systems in Contra Costa County, California
#Water systemCountyPopulation servedTypeSource
1Contra Costa Water DistrictContra Costa198,000CommunitySurface water
2City of AntiochContra Costa115,074CommunitySurface water
3BrentwoodContra Costa64,513CommunityPurchased surface water
4City of PittsburgContra Costa62,500CommunityPurchased surface water
5Diablo Water DistrictContra Costa43,357CommunityPurchased surface water
6City of MartinezContra Costa30,997CommunityPurchased surface water
7Golden State Water Company - Bay PointContra Costa23,731CommunityPurchased surface water
8Town of Discovery BayContra Costa16,790CommunityGroundwater
9Pleasantimes Mutual Water CoContra Costa644CommunityGroundwater
10Excelsior Middle SchoolContra Costa600Non-transient non-communityGroundwater
11Clayton Palms WaterContra Costa549CommunityPurchased surface water
12Willow Mobile Home ParkContra Costa481CommunityGroundwater
13Willow Park MarinaContra Costa380CommunityGroundwater
14Mount Diablo State ParkContra Costa364Transient non-communityGroundwater
15Orwood ResortContra Costa350CommunityGroundwater
16Knightsen Elementary SchoolContra Costa350Non-transient non-communityGroundwater
17Delta Mutual Water CompanyContra Costa333CommunityGroundwater
18Canyon SchoolContra Costa238Non-transient non-communityGroundwater
19Riverview Water AssociationContra Costa230CommunityGroundwater
20Camino MobilehomeContra Costa210CommunityGroundwater
21Byron Corners Inc.Contra Costa205Transient non-communityGroundwater
22Bethel Island EstatesContra Costa200CommunityGroundwater
23Country Junction DeliContra Costa200Transient non-communityGroundwater
24Bethel Island MhcContra Costa185CommunityGroundwater
25Dwr Delta Field Division - Banks PpContra Costa180Non-transient non-communitySurface water
26Los Vaqueros Marina BldgContra Costa180Transient non-communitySurface water
27Oakley Mutual Water CompanyContra Costa170CommunityGroundwater
28Big Oak Mobile Home Park WaterContra Costa156CommunityGroundwater
29Delta SportsmanContra Costa150Transient non-communityGroundwater
30Sugar Barge MarinaContra Costa150Transient non-communityGroundwater
31Farrar Park Property OwnersContra Costa140CommunityGroundwater
32Riverview Mobile Home ParkContra Costa126CommunityGroundwater
33Bethel Island Mutual Water CoContra Costa123CommunityGroundwater
34Gas N SaveContra Costa120Transient non-communityGroundwater
35Concord Mt Diablo Trailride Assoc.Contra Costa120Transient non-communityGroundwater
36Ebrpd AlhambraContra Costa115Transient non-communityGroundwater
37Russos Mobile ParkContra Costa110CommunityGroundwater
38Ebrpd Bay Point Regional ShorelineContra Costa105Transient non-communityGroundwater
39Sandmound MutualContra Costa100CommunityGroundwater
40Delta Bar and GrillContra Costa100Transient non-communityGroundwater
41Bethel MarketContra Costa100Transient non-communityGroundwater
42Anglers Subdivision 4Contra Costa99CommunityGroundwater
43Bella Vista Water SysContra Costa93CommunityGroundwater
44Ebrpd Round Valley Water SystemContra Costa82Transient non-communityGroundwater
45New Life MarinaContra Costa80Transient non-communityGroundwater
46Marina Mobile ManorContra Costa75CommunityGroundwater
47Bridgehead CafeContra Costa75Transient non-communityGroundwater
48Bethel Baptist ChurchContra Costa75Transient non-communityGroundwater
49Old Borges Ranch Water SysContra Costa75Transient non-communityGroundwater
50Cruiser Haven MarinaContra Costa75Transient non-communityGroundwater