Public water system · CA5800823

Active

Riselen Park

At a glance

Riselen Park (PWSID CA5800823) is an active community water system in Yuba County, California. It reports serving 100 people through 35 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in January 2019.

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

Population served

100

Service connections

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDCA5800823

System typeCommunity water system

Activity statusActive

Population served100

Service connections35

Primary water sourceGroundwater

Owner typePrivate

Primacy agencyCA state drinking water program

City served—

StateCalifornia

ZIP—

CountyYuba County

How does Riselen Park compare with other water systems in Yuba County?

By EPA's size categories, Riselen Park is a very small system (500 people or fewer). Yuba County has 62 active public water systems. Its population served is well below the county average of 1,823 people per system, and accounts for less than 0.1% of the 113,008 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 Riselen Park 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 Riselen Park?

EPA lists Riselen Park 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. 53 of the 62 active systems in Yuba County (85%) are also privately owned.

Does Riselen Park have drinking water violations?

EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in January 2019. The violations listed here began between October 1980 and January 2019. By type: 6 monitoring and reporting, 2 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Gross alpha (excluding radon and uranium) (2 of them). EPA lists 5 as resolved and 4 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.

Began	Violation	Contaminant or rule	Health-based	Status
2019-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2019-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2017-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved
2014-11-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
1993-07-01	Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51	Lead and Copper Rulecode 5000	No	Resolved
1984-09-01	Public notice, recordkeeping or otherNotification, Public · code 06	Not reported	No	Archived
1982-12-01	Public notice, recordkeeping or otherNotification, Public · code 06	Not reported	No	Archived
1981-10-01	Monitoring and reportingMonitoring, Regular · code 03	Gross alpha (excluding radon and uranium)code 4000	No	Archived
1980-10-30	Monitoring and reportingMonitoring, Regular · code 03	Gross alpha (excluding radon and uranium)code 4000	No	Archived

All 9 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.

Riselen Park: frequently asked questions

Who runs Riselen Park?

Riselen Park (PWSID CA5800823) is a community water system privately owned. It is regulated by the CA state drinking water program.

How many people does Riselen Park serve?

Riselen Park reports serving 100 people through 35 service connections in Yuba County, California.

Where does Riselen Park 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 Riselen Park have any drinking water violations?

EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in January 2019. 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 Riselen Park'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 9 violations for this system; 1 is health-based, and the most recent began in January 2019. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.

Where can I find Riselen Park's water quality report?

As a community water system, Riselen Park 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 Yuba County

Water system	County	Population served	Type	Source
Linda County Water District	Yuba	21,654	Community	Groundwater
Yuba County Motorplex	Yuba	18,000	Transient non-community	Groundwater
Olivehurst Public U.D.	Yuba	16,595	Community	Groundwater
Cal-Water Service Co.-Marysville	Yuba	12,419	Community	Groundwater
Plumas Lake	Yuba	10,464	Community	Groundwater
Beale Air Force Base	Yuba	6,785	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, “Riselen Park, PWSID CA5800823, California”, https://aquacensus.com/water-systems/california/riselen-park-ca5800823 (data as of October 1, 2026).