Public water system · CA5310002
ActiveTrinity Co. W.W. Dist #1
At a glance
Trinity Co. W.W. Dist #1 (PWSID CA5310002) is an active community water system in Trinity County, California. It reports serving 2,324 people through 601 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in October 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,324
Service connections
601
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Trinity Co. W.W. Dist #1 compare with other water systems in Trinity County?
By EPA's size categories, Trinity Co. W.W. Dist #1 is a small system (501 to 3,300 people). Trinity County has 42 active public water systems, and Trinity Co. W.W. Dist #1 is the 2nd-largest of them by population served. Its population served is about 6.7 times the county average of 347 people per system, and accounts for 16% of the 14,561 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 Trinity Co. W.W. Dist #1 is about 65% 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 609 California systems (8.1%) list surface water as their primary source.
Who owns and regulates Trinity Co. W.W. Dist #1?
EPA lists Trinity Co. W.W. Dist #1 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. 5 of the 42 active systems in Trinity County (12%) are also owned by a local government.
Does Trinity Co. W.W. Dist #1 have drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in October 2023. The violations listed here began between July 1993 and October 2023. By type: 3 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Lead and Copper Rule (2 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2023-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1995-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-06-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1993-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
All 4 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.
Trinity Co. W.W. Dist #1: frequently asked questions
Who runs Trinity Co. W.W. Dist #1?
Trinity Co. W.W. Dist #1 (PWSID CA5310002) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Trinity Co. W.W. Dist #1 serve?
Trinity Co. W.W. Dist #1 reports serving 2,324 people through 601 service connections in Trinity County, California.
Where does Trinity Co. W.W. Dist #1 get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Trinity Co. W.W. Dist #1 have any drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in October 2023. 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 Trinity Co. W.W. Dist #1'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 4 violations for this system; 1 is health-based, and the most recent began in October 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Trinity Co. W.W. Dist #1's water quality report?
As a community water system, Trinity Co. W.W. Dist #1 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 Trinity County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Weaverville C.S.D. | Trinity | 3,975 | Community | Surface water |
| Trinity Center M.W.C. | Trinity | 729 | Community | Surface water |
| Lewiston Community Services District | Trinity | 677 | Community | Surface water |
| Clark System | Trinity | 450 | Transient non-community | Groundwater |
| Hayward Flat Campground | Trinity | 440 | Transient non-community | Groundwater |
| Tannery Gulch Campground | Trinity | 410 | Transient non-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, “Trinity Co. W.W. Dist #1, PWSID CA5310002, California”, https://aquacensus.com/water-systems/california/trinity-co-w-w-dist-1-ca5310002 (data as of October 1, 2026).