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El Dorado County, California — public water systems

At a glance

124 active public water systems are filed under El Dorado County, California in EPA's SDWIS records, together reporting 291,553 people served. The largest is El Dorado Id - Main, which reports serving 132,171 people. 18 are community water systems serving people where they live; the other 106 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

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

Active systems

124

Population served

291.6K

Community systems

18

Groundwater share

85.5%

How does El Dorado County compare with other California counties?

El Dorado County has the 19th-most active public water systems among the 201 counties listed for active California systems in EPA records; among the 72 with 3 or more systems, the median has 73. Its systems report 291,553 people served in total, the 24th-largest county figure in the state and 0.7% of the statewide total. The average system here reports serving 2,351 people, about 59% below the California average of 5,706. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does El Dorado County's drinking water come from?

By primary water source, El Dorado County's active systems draw on groundwater (106, 85%), surface water (17, 14%) and purchased surface water (1, 0.8%). Overall, 85% rely mainly on groundwater (including purchased groundwater) and 15% on surface water, compared with 85% and 15% across California. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, El Dorado Id - Main, draws primarily on surface water.

What kinds of water systems operate in El Dorado County?

El Dorado County's active systems break down as 18 community systems (15%), 8 non-transient non-community systems (6.5%) and 98 transient non-community systems (79%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as private (65%), federal government (16%), local government (15%) and state government (4%).

The 50 largest water systems in El Dorado County

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Active public water systems in El Dorado County, California
#Water systemCountyPopulation servedTypeSource
1El Dorado Id - MainEl Dorado132,171CommunitySurface water
2South Tahoe PUD - MainEl Dorado100,000CommunityGroundwater
3Georgetown Divide PUDEl Dorado9,434CommunitySurface water
4Placerville, City of - MainEl Dorado9,224CommunityPurchased surface water
5South Shore Recreation AreaEl Dorado3,300Non-transient non-communityGroundwater
6Lukins Brothers Water CompanyEl Dorado3,277CommunityGroundwater
7Lakeside Park AssociationEl Dorado2,648CommunitySurface water
8Pyramid Creek TrailheadEl Dorado2,000Transient non-communityGroundwater
9Sierra Tahoe Main LodgeEl Dorado1,940Non-transient non-communityGroundwater
10Sierra Tahoe West BowlEl Dorado1,900Transient non-communityGroundwater
11Tahoe Keys Water CompanyEl Dorado1,420CommunityGroundwater
12Grizzly Flats Community ServicEl Dorado1,374CommunitySurface water
13Ca State Parks - D.L. BlissEl Dorado1,005Transient non-communitySurface water
14Ca State Parks - Emerald Bay, VikingsholEl Dorado1,002Transient non-communitySurface water
15Ca State Parks - Emerald Bay, Boat CampgEl Dorado1,001Transient non-communitySurface water
16Ca State Parks - Emerald Bay, Eagle PoinEl Dorado1,000Transient non-communitySurface water
17The Pub Water SystemEl Dorado1,000Transient non-communityGroundwater
18Henningsen Lotus Park Water SystemEl Dorado1,000Transient non-communityGroundwater
19Nugget CampgroundEl Dorado1,000Transient non-communityGroundwater
20Camp Lotus Water SystemEl Dorado1,000Transient non-communityGroundwater
21Folsom Lake Sra - Peninsula CampgroundEl Dorado751Transient non-communityGroundwater
22Tahoe City PUD - RubiconEl Dorado703CommunityGroundwater
23El Dorado Id - OutingdaleEl Dorado535CommunitySurface water
24Sierra Tahoe GrandviewEl Dorado500Transient non-communityGroundwater
25Jalapenos Water SystemEl Dorado500Transient non-communityGroundwater
26Fallen Leaf Mutual Water CoEl Dorado461Transient non-communitySurface water
27El Dorado Id - StrawberryEl Dorado400CommunitySurface water
28Angora Lakes ResortEl Dorado400Transient non-communityGroundwater
29Spring Creek Tract AssociationEl Dorado389Transient non-communityGroundwater
30Peninsula Recreation AreaEl Dorado353Transient non-communityGroundwater
31Smud Powerpines CampEl Dorado311Transient non-communityGroundwater
32Station House InnEl Dorado310Non-transient non-communityGroundwater
33Mountain Camp IiEl Dorado300Transient non-communityGroundwater
34Pioneer Bible ChurchEl Dorado300Transient non-communityGroundwater
35Stanford Sierra CampEl Dorado295Transient non-communitySurface water
36Camp SacramentoEl Dorado250Transient non-communitySurface water
37Wench Creek CampgroundEl Dorado250Transient non-communityGroundwater
38Pioneer Elementary SchoolEl Dorado227Non-transient non-communityGroundwater
39Sierra Pines CampEl Dorado226Transient non-communityGroundwater
40Sciots Tract Water SystemEl Dorado223Transient non-communitySurface water
41Ice House CampgroundEl Dorado200Transient non-communityGroundwater
42Baldwin BeachEl Dorado200Transient non-communityGroundwater
43Camp ShellyEl Dorado200Transient non-communityGroundwater
44Leoni Meadows CampEl Dorado169Transient non-communityGroundwater
45Kyburz Mutual Water CompanyEl Dorado150CommunitySurface water
46Pipi Campground Water SystemEl Dorado150Transient non-communityGroundwater
47Wolf Creek CampgroundEl Dorado150Transient non-communityGroundwater
48Cody Water AssociationEl Dorado148Transient non-communitySurface water
49Gold Beach ParkEl Dorado134CommunityGroundwater
50Robbs ResortEl Dorado132Transient non-communityGroundwater

All other water systems in El Dorado County (74)

The remaining active systems filed under El Dorado County, largest first, with the population each reports serving.

El Dorado County water systems: frequently asked questions

How many public water systems are in El Dorado County, California?

EPA's SDWIS records file 124 active public water systems under El Dorado County, California: 18 community systems (15%), 8 non-transient non-community systems (6.5%) and 98 transient non-community systems (79%).

Who supplies drinking water in El Dorado County, CA?

The largest community water systems filed under El Dorado County are El Dorado Id - Main (132,171 people served), South Tahoe PUD - Main (100,000 people served) and Georgetown Divide PUD (9,434 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.

Does El Dorado County's drinking water come from groundwater or surface water?

Of the 124 active public water systems in El Dorado County, 85% draw mainly on groundwater and 15% on surface water, counting purchased supplies. The largest system, El Dorado Id - Main, uses surface water.

Where can I find a water quality report for El Dorado County?

Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 18 community systems are filed under El Dorado County, so the report to look for is the one from the system that supplies your address.

How can I check violations for a water system in El Dorado County?

Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.

More California water systems

About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Public water systems in El Dorado County, California”, https://aquacensus.com/water-systems/california/el-dorado (data as of October 1, 2026).