Public water system · CA3310040

Active

Fern Valley Wd

At a glance

Fern Valley Wd (PWSID CA3310040) is an active community water system in Riverside County, California. It reports serving 900 people through 1,181 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 10 violations for this system; 3 are health-based, and the most recent began in October 2022.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

900

Service connections

1,181

Primary source

Surface water

System type

CWS

Community water system

System record

PWSIDCA3310040

System typeCommunity water system

Activity statusActive

Population served900

Service connections1,181

Primary water sourceSurface water

Owner typeLocal government

Primacy agencyCA state drinking water program

City served—

StateCalifornia

ZIP—

CountyRiverside County

How does Fern Valley Wd compare with other water systems in Riverside County?

By EPA's size categories, Fern Valley Wd is a small system (501 to 3,300 people). Riverside County has 197 active public water systems. Its population served is well below the county average of 14,435 people per system, and accounts for less than 0.1% of the 2,843,721 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 Fern Valley Wd 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. 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 Fern Valley Wd?

EPA lists Fern Valley Wd 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. 50 of the 197 active systems in Riverside County (25%) are also owned by a local government.

Does Fern Valley Wd have drinking water violations?

EPA's records list 10 violations for this system; 3 are health-based, and the most recent began in October 2022. The violations listed here began between April 1992 and October 2022. By type: 7 monitoring and reporting, 2 contaminant level above the legal limit and 1 required treatment not met. The contaminant or rule involved most often is Combined Uranium (2 of them). EPA lists 10 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
2022-10-01	Monitoring and reportingMonitoring, Regular · code 03	Combined Uraniumcode 4006	No	Resolved
2022-07-01	Monitoring and reportingMonitoring, Regular · code 03	Combined Uraniumcode 4006	No	Resolved
2013-01-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Resolved
2010-04-01	Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24	Total coliform bacteria (TCR)code 3100	No	Resolved
2008-10-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2007-01-01	Monitoring and reportingMonitoring, Regular · code 03	Combined Radium (-226 and -228)code 4010	No	Resolved
2007-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2007-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved
2004-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Haloacetic acids (HAA5)code 2456	Yes	Resolved
1992-04-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved

All 10 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.

Fern Valley Wd: frequently asked questions

Who runs Fern Valley Wd?

Fern Valley Wd (PWSID CA3310040) is a community water system owned by a local government. It is regulated by the CA state drinking water program.

How many people does Fern Valley Wd serve?

Fern Valley Wd reports serving 900 people through 1,181 service connections in Riverside County, California.

Where does Fern Valley Wd 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 Fern Valley Wd have any drinking water violations?

EPA's records list 10 violations for this system; 3 are health-based, and the most recent began in October 2022. 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 Fern Valley Wd'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 10 violations for this system; 3 are health-based, and the most recent began in October 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.

Where can I find Fern Valley Wd's water quality report?

As a community water system, Fern Valley Wd 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 Riverside County

Water system	County	Population served	Type	Source
Eastern Municipal Wd	Riverside	666,581	Community	Purchased surface water
Riverside, City of	Riverside	298,398	Community	Groundwater under influence of surface water
Coachella Vwd: Cove Community	Riverside	270,000	Community	Groundwater
Elsinore Valley Mwd	Riverside	169,455	Community	Surface water
Corona, City of	Riverside	168,575	Community	Purchased surface water
Rancho California Water District	Riverside	146,147	Community	Purchased surface water

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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, “Fern Valley Wd, PWSID CA3310040, California”, https://aquacensus.com/water-systems/california/fern-valley-wd-ca3310040 (data as of October 1, 2026).