Public water system · CA3205001
ActiveWalker Ranch Csd
At a glance
Walker Ranch Csd (PWSID CA3205001) is an active community water system in Plumas County, California. It reports serving 150 people through 171 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is health-based, and the most recent began in September 2013.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
150
Service connections
171
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Walker Ranch Csd compare with other water systems in Plumas County?
By EPA's size categories, Walker Ranch Csd is a very small system (500 people or fewer). Plumas County has 108 active public water systems. Its population served is about half of the county average of 303 people per system, and accounts for 0.5% of the 32,740 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active community water system reports serving 6,703 people, so Walker Ranch Csd is well below that figure.
What does “community water system” mean?
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. California has 2,997 active community water systems, 40% of the state's 7,479 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 6,179 California systems (83%) list groundwater as their primary source.
Who owns and regulates Walker Ranch Csd?
EPA lists Walker Ranch Csd as owned by a local government. The CA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 19 of the 108 active systems in Plumas County (18%) are also owned by a local government.
Does Walker Ranch Csd have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in September 2013. By type: 1 contaminant level above the legal limit. The contaminant or rule involved is Total coliform bacteria (TCR). EPA lists 1 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2013-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
The one violation in EPA's records.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Walker Ranch Csd: frequently asked questions
Who runs Walker Ranch Csd?
Walker Ranch Csd (PWSID CA3205001) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Walker Ranch Csd serve?
Walker Ranch Csd reports serving 150 people through 171 service connections in Plumas County, California.
Where does Walker Ranch Csd get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Walker Ranch Csd have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in September 2013. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Walker Ranch Csd's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list one violation for this system; it is health-based, and the most recent began in September 2013. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Walker Ranch Csd's water quality report?
As a community water system, Walker Ranch Csd must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Plumas County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Lake Almanor Country Club Mwc | Plumas | 6,000 | Community | Groundwater |
| American Valley Csd | Plumas | 3,778 | Community | Groundwater |
| Chester Public U.D. | Plumas | 2,187 | Community | Groundwater |
| City of Portola | Plumas | 2,100 | Community | Purchased surface water |
| Hamilton Branch Csd | Plumas | 1,874 | Community | Groundwater |
| Plumas Eureka Csd | Plumas | 1,534 | Community | Groundwater |
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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, “Walker Ranch Csd, PWSID CA3205001, California”, https://aquacensus.com/water-systems/california/walker-ranch-csd-ca3205001 (data as of October 1, 2026).