Sierra County, California — public water systems
At a glance
32 active public water systems are filed under Sierra County, California in EPA's SDWIS records, together reporting 7,169 people served. The largest is Tnf-Logger & Stampede Rc, which reports serving 1,200 people. 8 are community water systems serving people where they live; the other 24 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
32
Population served
7.2K
Community systems
8
Groundwater share
93.8%
How does Sierra County compare with other California counties?
Sierra County has the 53rd-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 7,169 people served in total, the 59th-largest county figure in the state and less than 0.1% of the statewide total. The average system here reports serving 224 people, well 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 Sierra County's drinking water come from?
By primary water source, Sierra County's active systems draw on groundwater (30, 94%) and surface water (2, 6.3%). Overall, 94% rely mainly on groundwater (including purchased groundwater) and 6.3% 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, Tnf-Logger & Stampede Rc, draws primarily on groundwater.
What kinds of water systems operate in Sierra County?
Sierra County's active systems break down as 8 community systems (25%) and 24 transient non-community systems (75%). 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 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 (44%), federal government (34%), local government (19%) and state government (3.1%).
Water systems in Sierra County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Tnf-Logger & Stampede Rc | Sierra | 1,200 | Transient non-community | Groundwater |
| 2 | City of Loyalton | Sierra | 983 | Community | Groundwater |
| 3 | Downieville Public U.D. | Sierra | 783 | Community | Surface water |
| 4 | Sierra Csa #5, Sierra Brooks | Sierra | 726 | Community | Groundwater |
| 5 | Sierra Water Resources - Sierra City | Sierra | 324 | Community | Groundwater |
| 6 | Bassett'S Station | Sierra | 300 | Transient non-community | Groundwater |
| 7 | Tnf-Aspen Creek/Pass Creek | Sierra | 300 | Transient non-community | Groundwater |
| 8 | Sardine Lake Resort | Sierra | 250 | Transient non-community | Surface water |
| 9 | Sierra City Water Works, Inc.. | Sierra | 250 | Community | Groundwater |
| 10 | Treasure Mountain Camp | Sierra | 200 | Transient non-community | Groundwater |
| 11 | Tnf-Cal-Ida Well | Sierra | 200 | Transient non-community | Groundwater |
| 12 | Sierraville P.U.D. | Sierra | 200 | Community | Groundwater |
| 13 | Sierra Co. W.W.D #1 Calpine | Sierra | 182 | Community | Groundwater |
| 14 | Shaffer S High Sierra Camp | Sierra | 131 | Transient non-community | Groundwater |
| 15 | Greene Acres Prop. O.A. | Sierra | 129 | Transient non-community | Groundwater |
| 16 | Tnf-Sardine Lake/Salmon Creek | Sierra | 100 | Transient non-community | Groundwater |
| 17 | Tnf-Wild Plum Cg | Sierra | 100 | Transient non-community | Groundwater |
| 18 | Tnf-Indian Valley/Rocky Rest Cg | Sierra | 95 | Transient non-community | Groundwater |
| 19 | Tnf-Chapman Cg | Sierra | 95 | Transient non-community | Groundwater |
| 20 | Alleghany County W.D. | Sierra | 82 | Community | Groundwater |
| 21 | Tnf-Cottonwood Cg | Sierra | 75 | Transient non-community | Groundwater |
| 22 | Tnf-Little Truckee Ws | Sierra | 75 | Transient non-community | Groundwater |
| 23 | Tnf-Loganville Cg | Sierra | 70 | Transient non-community | Groundwater |
| 24 | The Yubaverse | Sierra | 58 | Transient non-community | Groundwater |
| 25 | New Age Church of Being-Sierra Hot Spr. | Sierra | 50 | Transient non-community | Groundwater |
| 26 | Tnf-Union Flat Cg | Sierra | 40 | Transient non-community | Groundwater |
| 27 | Tnf-Yuba Pass Cg | Sierra | 40 | Transient non-community | Groundwater |
| 28 | Camp Leonard, Sierra Nv F.C. | Sierra | 30 | Transient non-community | Groundwater |
| 29 | Webber Lake Campground | Sierra | 26 | Transient non-community | Groundwater |
| 30 | Sierra Pines Resort | Sierra | 25 | Transient non-community | Groundwater |
| 31 | Pilot Lake Camp | Sierra | 25 | Transient non-community | Groundwater |
| 32 | Salmon Lake Lodge | Sierra | 25 | Transient non-community | Groundwater |
Sierra County water systems: frequently asked questions
How many public water systems are in Sierra County, California?
EPA's SDWIS records file 32 active public water systems under Sierra County, California: 8 community systems (25%) and 24 transient non-community systems (75%).
Who supplies drinking water in Sierra County, CA?
The largest community water systems filed under Sierra County are City of Loyalton (983 people served), Downieville Public U.D. (783 people served) and Sierra Csa #5, Sierra Brooks (726 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 Sierra County's drinking water come from groundwater or surface water?
Of the 32 active public water systems in Sierra County, 94% draw mainly on groundwater and 6.3% on surface water, counting purchased supplies. The largest system, Tnf-Logger & Stampede Rc, uses groundwater.
Where can I find a water quality report for Sierra 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. 8 community systems are filed under Sierra 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 Sierra 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
- All California public water systems· 7,479 active
- Trinity County· 42 systems
- Alpine County· 35 systems
- Sutter County· 35 systems
- Glenn County· 34 systems
- Del Norte County· 31 systems
- Colusa County· 29 systems
- How to find out who supplies your drinking water
- How to find and read your annual water quality report
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 Sierra County, California”, https://aquacensus.com/water-systems/california/sierra (data as of October 1, 2026).