Public water system · CA2510002
ActiveCedarville County Water Dist.
At a glance
Cedarville County Water Dist. (PWSID CA2510002) is an active community water system in Modoc County, California. It reports serving 600 people through 293 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in February 2003.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
600
Service connections
293
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Cedarville County Water Dist. compare with other water systems in Modoc County?
By EPA's size categories, Cedarville County Water Dist. is a small system (501 to 3,300 people). Modoc County has 16 active public water systems, and Cedarville County Water Dist. is the 4th-largest of them by population served. Its population served is about 73% above the county average of 347 people per system, and accounts for 11% of the 5,554 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 Cedarville County Water 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 Cedarville County Water Dist.?
EPA lists Cedarville County Water Dist. 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. 4 of the 16 active systems in Modoc County (25%) are also owned by a local government.
Does Cedarville County Water Dist. have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in February 2003. The violations listed here began between July 1993 and February 2003. By type: 2 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2003-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2003-01-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | 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 3 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.
Cedarville County Water Dist.: frequently asked questions
Who runs Cedarville County Water Dist.?
Cedarville County Water Dist. (PWSID CA2510002) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Cedarville County Water Dist. serve?
Cedarville County Water Dist. reports serving 600 people through 293 service connections in Modoc County, California.
Where does Cedarville County Water 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 Cedarville County Water Dist. have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in February 2003. 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 Cedarville County Water 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. EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in February 2003. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Cedarville County Water Dist.'s water quality report?
As a community water system, Cedarville County Water 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 Modoc County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Alturas | Modoc | 2,715 | Community | Groundwater |
| California Pines C.S.D. | Modoc | 862 | Community | Groundwater |
| Newell County Water District | Modoc | 629 | Community | Groundwater |
| Mdf-Blue Lake Cg | Modoc | 200 | Transient non-community | Groundwater |
| Cal Fire-Devil'S Garden Camp | Modoc | 120 | Non-transient non-community | Groundwater |
| Isot Community Water System | Modoc | 116 | 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, “Cedarville County Water Dist., PWSID CA2510002, California”, https://aquacensus.com/water-systems/california/cedarville-county-water-dist-ca2510002 (data as of October 1, 2026).