Public water system · 090605083

Active

Redding Rancheria

At a glance

Redding Rancheria (PWSID 090605083) is an active community water system in California. It reports serving 2,015 people through 14 service connections. Its primary water source is purchased surface water, and EPA lists it as Native American-owned. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in March 2026.

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

Population served

2,015

Service connections

Primary source

SWP

Purchased surface water

System type

CWS

Community water system

System record

PWSID090605083

System typeCommunity water system

Activity statusActive

Population served2,015

Service connections14

Primary water sourcePurchased surface water

Owner typeNative American

Primacy agencyEPA Region 09

City served—

StateCalifornia

ZIP—

County—

How does Redding Rancheria compare with other water systems in California?

By EPA's size categories, Redding Rancheria is a small system (501 to 3,300 people). 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 Redding Rancheria 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 506 California systems (6.8%) list purchased surface water as their primary source.

Who owns and regulates Redding Rancheria?

EPA lists Redding Rancheria as Native American-owned. The EPA Region 09 is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act.

Does Redding Rancheria have drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in March 2026. The violations listed here began between October 2024 and March 2026. By type: 5 monitoring and reporting, 4 monitoring, 1 public notice, recordkeeping or other, 1 reporting and 1 required treatment not met. The contaminant or rule involved most often is Revised Total Coliform Rule (4 of them). EPA lists 6 as archived, 5 as resolved and 1 as unaddressed. 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. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.

Began	Violation	Contaminant or rule	Health-based	Status
2026-03-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Archived
2026-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Archived
2026-01-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2025-11-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Archived
2025-10-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Archived
2025-04-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2025-04-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved
2025-04-01	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Unaddressed
2025-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Archived
2025-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Archived
2024-10-17	ReportingLSL Reporting · code 4G	Lead and Copper Rule Revisionscode 5200	No	Resolved
2024-10-17	Required treatment not metLSL Inventory · code 2E	Lead and Copper Rule Revisionscode 5200	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.

Redding Rancheria: frequently asked questions

Who runs Redding Rancheria?

Redding Rancheria (PWSID 090605083) is a community water system Native American-owned. It is regulated by the EPA Region 09.

How many people does Redding Rancheria serve?

Redding Rancheria reports serving 2,015 people through 14 service connections in California.

Where does Redding Rancheria get its water?

EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.

Does Redding Rancheria have any drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in March 2026. 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 Redding Rancheria'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, one is health-based, and the most recent began in March 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the EPA Region 09.

Where can I find Redding Rancheria's water quality report?

As a community water system, Redding Rancheria 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 California

Water system	County	Population served	Type	Source
Los Angeles-City, Dept. of Water & Power	Los Angeles	3,875,566	Community	Surface water
East Bay MUD	Alameda	1,442,800	Community	Surface water
San Diego, City of	San Diego	1,385,379	Community	Surface water
San Jose Water	Santa Clara	1,039,920	Community	Surface water
Sfpuc City Distribution Division	San Francisco	848,019	Community	Purchased surface water
Eastern Municipal Wd	Riverside	666,581	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, “Redding Rancheria, PWSID 090605083, California”, https://aquacensus.com/water-systems/california/redding-rancheria-090605083 (data as of October 1, 2026).