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San Mateo County, California — public water systems

51 active public water systems serve San Mateo County, reporting 783.4K people served.

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

Active systems

51

Population served

783.4K

Community systems

36

Groundwater share

37.3%

Water systems in San Mateo County

Active public water systems in San Mateo County, California
#Water systemCountyPopulation servedTypeSource
1City of Daly CitySan Mateo104,901CommunityPurchased surface water
2California Water Service - San MateoSan Mateo102,348CommunityPurchased surface water
3City of Redwood CitySan Mateo92,819CommunityPurchased surface water
4California Water Service-S San FranciscoSan Mateo64,146CommunityPurchased surface water
5California Water Service - Bear GulchSan Mateo61,431CommunitySurface water
6City of San BrunoSan Mateo42,631CommunityPurchased surface water
7North Coast County Water DistSan Mateo38,546CommunityPurchased surface water
8Estero Municipal Improvement DistrictSan Mateo36,556CommunityPurchased surface water
9California Water Service - San CarlosSan Mateo35,344CommunityPurchased surface water
10City of BurlingameSan Mateo31,451CommunityPurchased surface water
11Mid-Peninsula Water DistrictSan Mateo30,609CommunityPurchased surface water
12City of East Palo AltoSan Mateo29,519CommunityPurchased surface water
13City of MillbraeSan Mateo22,795CommunityPurchased surface water
14Menlo Park Municipal WaterSan Mateo22,362CommunityPurchased surface water
15Coastside County Water DistrictSan Mateo18,940CommunitySurface water
16Westborough Water DistrictSan Mateo13,486CommunityPurchased surface water
17Town of HillsboroughSan Mateo11,766CommunityPurchased surface water
18Montara Water and Sanitary DistrictSan Mateo6,078CommunitySurface water
19City of BrisbaneSan Mateo3,402CommunityPurchased surface water
20Palo Alto Park Mutual Water CompanySan Mateo2,900CommunityGroundwater
21O'Connor Tract Co-Operative Water Co.San Mateo2,789CommunityGroundwater
22San Mateo County Memorial ParkSan Mateo1,790Transient non-communitySurface water
23Guadalupe Valley MidSan Mateo1,472CommunityPurchased surface water
24Cuesta La Honda Guild Inc.San Mateo915CommunitySurface water
25Csp - Ano Nuevo State ParkSan Mateo709Transient non-communityGroundwater
26County Service Area 11San Mateo642CommunityGroundwater
27Costanoa CampgroundSan Mateo583Non-transient non-communityGroundwater
28Camp Jones GulchSan Mateo357CommunityGroundwater
29County Service Area 7San Mateo300CommunitySurface water
30Camp Loma MarSan Mateo208CommunitySurface water
31Optimists Volunteers for YouthSan Mateo207Transient non-communityGroundwater
32Csp - Portola State ParkSan Mateo181Transient non-communitySurface water
33Butano Canyon MutualSan Mateo150CommunitySurface water
34Redwood Glen Camp & Conference CtrSan Mateo114CommunitySurface water
35Harley Farms Goat DairySan Mateo113Transient non-communityGroundwater
36Butano State Park - CspSan Mateo95Transient non-communitySurface water
37Portola Improvement Association MwcSan Mateo90CommunityGroundwater under influence of surface water
38Pigeon Point HostelSan Mateo67Transient non-communityGroundwater
39Bianchi Flowers Inc.San Mateo65CommunityGroundwater
40Loma Mar MutualSan Mateo65CommunitySurface water
41Redwood Terrace MutualSan Mateo56CommunityGroundwater under influence of surface water
42Marchi Central FarmSan Mateo50CommunityGroundwater
43Skylawn Memorial Park (Skylawn Inc.)San Mateo50Non-transient non-communityGroundwater
44Martins Beach Water SystemSan Mateo49Transient non-communitySurface water
45Oku IncorporatedSan Mateo35CommunityGroundwater
46Uc Elkus RanchSan Mateo34Transient non-communitySurface water
47Gazos Creek Beach HouseSan Mateo33Transient non-communityGroundwater
48La Honda CenterSan Mateo33Transient non-communityGroundwater
49San Gregorio CompanySan Mateo32Transient non-communityGroundwater under influence of surface water
50Butano Girl Scout CampSan Mateo29Transient non-communitySurface water