Public water system · CA0310002

Active

Awa, Ione

At a glance

Awa, Ione (PWSID CA0310002) is an active community water system in Amador County, California. It reports serving 7,227 people through 2,386 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 11 violations for this system; 8 are health-based, and the most recent began in December 2024.

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

Population served

7,227

Service connections

2,386

Primary source

Surface water

System type

CWS

Community water system

System record

PWSIDCA0310002

System typeCommunity water system

Activity statusActive

Population served7,227

Service connections2,386

Primary water sourceSurface water

Owner typeLocal government

Primacy agencyCA state drinking water program

City servedJackson

StateCalifornia

ZIP—

CountyAmador County

How does Awa, Ione compare with other water systems in Amador County?

By EPA's size categories, Awa, Ione is a medium system (3,301 to 10,000 people). Amador County has 67 active public water systems, and Awa, Ione is the 2nd-largest of them by population served. Its population served is about 11 times the county average of 645 people per system, and accounts for 17% of the 43,217 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 Awa, Ione is roughly in line with 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 Awa, Ione?

EPA lists Awa, Ione 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. 16 of the 67 active systems in Amador County (24%) are also owned by a local government.

Does Awa, Ione have drinking water violations?

EPA's records list 11 violations for this system; 8 are health-based, and the most recent began in December 2024. The violations listed here began between May 1993 and December 2024. By type: 5 contaminant level above the legal limit, 3 required treatment not met, 2 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (5 of them). EPA lists 11 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
2024-12-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2022-04-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Resolved
2017-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Resolved
2015-07-01	Required treatment not metTreatment Technique Precursor Removal · code 46	Carbon, totalcode 2920	Yes	Resolved
2009-08-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2006-06-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2006-01-01	Required treatment not metSingle Turbidity Exceed (Enhanced SWTR) · code 43	Interim Enhanced Surface Water Treatment Rulecode 0300	Yes	Resolved
2005-11-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Resolved
2004-08-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2000-01-01	Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26	Total coliform bacteria (TCR)code 3100	No	Resolved
1993-05-01	Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24	Total coliform bacteria (TCR)code 3100	No	Resolved

All 11 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.

Awa, Ione: frequently asked questions

Who runs Awa, Ione?

Awa, Ione (PWSID CA0310002) is a community water system owned by a local government. It is regulated by the CA state drinking water program.

How many people does Awa, Ione serve?

Awa, Ione reports serving 7,227 people through 2,386 service connections in Amador County, California.

Where does Awa, Ione 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 Awa, Ione have any drinking water violations?

EPA's records list 11 violations for this system; 8 are health-based, and the most recent began in December 2024. 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 Awa, Ione'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 11 violations for this system; 8 are health-based, and the most recent began in December 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.

Where can I find Awa, Ione's water quality report?

As a community water system, Awa, Ione 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 Amador County

Water system	County	Population served	Type	Source
Awa Buckhorn Plant	Amador	8,791	Community	Surface water
City of Jackson	Amador	5,019	Community	Purchased surface water
Awa, Tanner	Amador	4,940	Community	Surface water
Jackson Valley Irrigation District	Amador	3,553	Community	Surface water
Awa - Camanche Village	Amador	2,402	Community	Groundwater
Pine Grove Comm Serv Dist	Amador	1,141	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, “Awa, Ione, PWSID CA0310002, California”, https://aquacensus.com/water-systems/california/awa-ione-ca0310002 (data as of October 1, 2026).