Public water system · CA5210003
ActiveLos Molinos Comm. Services Dist.
At a glance
Los Molinos Comm. Services Dist. (PWSID CA5210003) is an active community water system in Tehama County, California. It reports serving 1,450 people through 373 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 12 are health-based, and the most recent began in January 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,450
Service connections
373
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Los Molinos Comm. Services Dist. compare with other water systems in Tehama County?
By EPA's size categories, Los Molinos Comm. Services Dist. is a small system (501 to 3,300 people). Tehama County has 109 active public water systems, and Los Molinos Comm. Services Dist. is the 6th-largest of them by population served. Its population served is about 3.1 times the county average of 474 people per system, and accounts for 2.8% 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 community water system reports serving 6,703 people, so Los Molinos Comm. Services Dist. 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 Los Molinos Comm. Services Dist.?
EPA lists Los Molinos Comm. Services Dist. 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 Los Molinos Comm. Services Dist. have drinking water violations?
Of the 12 most recent violations in EPA's records, 12 are health-based, and the most recent began in January 2020. The violations listed here began between July 2016 and January 2020. By type: 12 contaminant level above the legal limit. The contaminant or rule involved most often is Arsenic (12 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2020-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2019-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2019-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2019-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2018-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2018-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2018-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2017-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2017-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2017-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2016-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2016-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
The 12 most recent 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.
Los Molinos Comm. Services Dist.: frequently asked questions
Who runs Los Molinos Comm. Services Dist.?
Los Molinos Comm. Services Dist. (PWSID CA5210003) is a community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Los Molinos Comm. Services Dist. serve?
Los Molinos Comm. Services Dist. reports serving 1,450 people through 373 service connections in Tehama County, California.
Where does Los Molinos Comm. Services Dist. 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 Los Molinos Comm. Services Dist. have any drinking water violations?
Of the 12 most recent violations in EPA's records, 12 are health-based, and the most recent began in January 2020. 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 Los Molinos Comm. Services Dist.'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. Of the 12 most recent violations in EPA's records, 12 are health-based, and the most recent began in January 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Los Molinos Comm. Services Dist.'s water quality report?
As a community water system, Los Molinos Comm. Services Dist. 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 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 |
| Gerber Las Flores Csd | Tehama | 1,200 | 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, “Los Molinos Comm. Services Dist., PWSID CA5210003, California”, https://aquacensus.com/water-systems/california/los-molinos-comm-services-dist-ca5210003 (data as of October 1, 2026).