Washoe County, California — public water systems
At a glance
6 active public water systems are filed under Washoe County, California in EPA's SDWIS records, together reporting 1,270 people served. The largest is Washoe Valley Properties LLC, which reports serving 1,000 people. 2 are community water systems serving people where they live; the other 4 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
6
Population served
1.3K
Community systems
2
Groundwater share
100%
How does Washoe County compare with other California counties?
Washoe County has the 62nd-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 1,270 people served in total, the 64th-largest county figure in the state and less than 0.1% of the statewide total. The average system here reports serving 212 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 Washoe County's drinking water come from?
By primary water source, Washoe County's active systems draw on groundwater (6, 100%). Overall, all rely mainly on groundwater (including purchased groundwater) and none 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, Washoe Valley Properties LLC, draws primarily on groundwater.
What kinds of water systems operate in Washoe County?
Washoe County's active systems break down as 2 community systems (33%), 1 non-transient non-community systems (17%) and 3 transient non-community systems (50%). 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 (83%) and federal government (17%).
Water systems in Washoe County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Washoe Valley Properties LLC | Washoe | 1,000 | Transient non-community | Groundwater |
| 2 | Conestoga MHP | Washoe | 120 | Community | Groundwater |
| 3 | Reno Sahara Trailer Park | Washoe | 60 | Community | Groundwater |
| 4 | Western Nv Materials | Washoe | 40 | Non-transient non-community | Groundwater |
| 5 | Air Sailing Inc. Gliderport | Washoe | 25 | Transient non-community | Groundwater |
| 6 | Mt Rose Campground Usfs | Washoe | 25 | Transient non-community | Groundwater |
Washoe County water systems: frequently asked questions
How many public water systems are in Washoe County, California?
EPA's SDWIS records file 6 active public water systems under Washoe County, California: 2 community systems (33%), 1 non-transient non-community systems (17%) and 3 transient non-community systems (50%).
Who supplies drinking water in Washoe County, CA?
The largest community water systems filed under Washoe County are Conestoga MHP (120 people served) and Reno Sahara Trailer Park (60 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 Washoe County's drinking water come from groundwater or surface water?
Of the 6 active public water systems in Washoe County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Washoe Valley Properties LLC, uses groundwater.
Where can I find a water quality report for Washoe 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. 2 community systems are filed under Washoe 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 Washoe 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
- Harris County· 12 systems
- King George County· 9 systems
- San Francisco County· 8 systems
- DuPage County· 8 systems
- Pulaski County· 5 systems
- El Paso County· 5 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 Washoe County, California”, https://aquacensus.com/water-systems/california/washoe (data as of October 1, 2026).