Public water system · CA5200809
ActiveCalifornia Walnuts
At a glance
California Walnuts (PWSID CA5200809) is an active non-transient non-community water system in Tehama County, California. It reports serving 30 people through 5 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
30
Service connections
5
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does California Walnuts compare with other water systems in Tehama County?
By EPA's size categories, California Walnuts is a very small system (500 people or fewer). Tehama County has 109 active public water systems. Its population served is well below the county average of 474 people per system, and accounts for less than 0.1% of the 51,627 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so California Walnuts is well below that figure.
What does “non-transient non-community water system” mean?
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. California has 1,466 active non-transient non-community water systems, 20% 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 California Walnuts?
EPA lists California Walnuts as privately owned. 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. 69 of the 109 active systems in Tehama County (63%) are also privately owned.
Does California Walnuts have drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in October 2024. The violations listed here began between October 2024 and October 2024. By type: 1 required treatment not met and 1 reporting. The contaminant or rule involved most often is Lead and Copper Rule Revisions (2 of them). EPA lists 2 as unaddressed. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Unaddressed |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
All 2 violations in EPA's records, newest first.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.
California Walnuts: frequently asked questions
Who runs California Walnuts?
California Walnuts (PWSID CA5200809) is a non-transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does California Walnuts serve?
California Walnuts reports serving 30 people through 5 service connections in Tehama County, California.
Where does California Walnuts 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 California Walnuts have any drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in October 2024. 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 California Walnuts' 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 2 violations for this system; 1 is health-based, and the most recent began in October 2024. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find California Walnuts' water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. California Walnuts is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Tehama County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Red Bluff | Tehama | 14,710 | Community | Groundwater |
| City of Corning | Tehama | 8,244 | Community | Groundwater |
| Rio Alto Water District | Tehama | 3,329 | Community | Groundwater |
| Caltrans-Red Bluff Rest-Nb | Tehama | 2,600 | Transient non-community | Groundwater |
| Caltrans-Red Bluff Rest-Sb | Tehama | 2,500 | Transient non-community | Groundwater |
| Los Molinos Comm. Services Dist. | Tehama | 1,450 | 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, “California Walnuts, PWSID CA5200809, California”, https://aquacensus.com/water-systems/california/california-walnuts-ca5200809 (data as of October 1, 2026).