Public water system · OK1021713

Active

East Central Oklahoma Water Authority

At a glance

East Central Oklahoma Water Authority (PWSID OK1021713) is an active community water system in Sequoyah County, Oklahoma. It reports serving 1,200 people through 703 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2021.

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

Population served

1,200

Service connections

703

Primary source

Surface water

System type

CWS

Community water system

System record

PWSIDOK1021713

System typeCommunity water system

Activity statusActive

Population served1,200

Service connections703

Primary water sourceSurface water

Owner typeLocal government

Primacy agencyOK state drinking water program

City served—

StateOklahoma

ZIP—

CountySequoyah County

How does East Central Oklahoma Water Authority compare with other water systems in Sequoyah County?

By EPA's size categories, East Central Oklahoma Water Authority is a small system (501 to 3,300 people). Sequoyah County has 15 active public water systems. Its population served is about 55% below the county average of 2,693 people per system, and accounts for 3% of the 40,394 people reported by systems filed under the county. Across Oklahoma, the 1,254 active systems average 2,907 people each. Nationally, the average active community water system reports serving 6,703 people, so East Central Oklahoma Water Authority 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. Oklahoma has 864 active community water systems, 69% of the state's 1,254 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 175 Oklahoma systems (14%) list surface water as their primary source.

Who owns and regulates East Central Oklahoma Water Authority?

EPA lists East Central Oklahoma Water Authority as owned by a local government. The OK state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 14 of the 15 active systems in Sequoyah County (93%) are also owned by a local government.

Does East Central Oklahoma Water Authority have drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2021. The violations listed here began between January 2020 and October 2021. By type: 11 monitoring and reporting and 1 required treatment not met. The contaminants or rules involved are Surface Water Treatment Rule, o-Dichlorobenzene, p-Dichlorobenzene and Chlorobenzene. EPA lists 12 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
2021-10-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	o-Dichlorobenzenecode 2968	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	p-Dichlorobenzenecode 2969	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Chlorobenzenecode 2989	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	cis-1,2-Dichloroethylenecode 2380	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Carbon tetrachloridecode 2982	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Ethylbenzenecode 2992	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	1,1,1-Trichloroethanecode 2981	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	1,2-Dichloroethanecode 2980	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Tetrachloroethylenecode 2987	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	1,2-Dichloropropanecode 2983	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Vinyl chloridecode 2976	No	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.

East Central Oklahoma Water Authority: frequently asked questions

Who runs East Central Oklahoma Water Authority?

East Central Oklahoma Water Authority (PWSID OK1021713) is a community water system owned by a local government. It is regulated by the OK state drinking water program.

How many people does East Central Oklahoma Water Authority serve?

East Central Oklahoma Water Authority reports serving 1,200 people through 703 service connections in Sequoyah County, Oklahoma.

Where does East Central Oklahoma Water Authority 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 East Central Oklahoma Water Authority 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 October 2021. 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 East Central Oklahoma Water Authority'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 October 2021. For current results, consult the system's annual water quality report, EPA ECHO, or the OK state drinking water program.

Where can I find East Central Oklahoma Water Authority's water quality report?

As a community water system, East Central Oklahoma Water Authority 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 Sequoyah County

Water system	County	Population served	Type	Source
Sequoyah Co. Rwd #8	Sequoyah	13,460	Community	Surface water
Sallisaw	Sequoyah	8,510	Community	Surface water
Muldrow Pwa	Sequoyah	3,104	Community	Surface water
Sequoyah Co. Rwd #7	Sequoyah	2,948	Community	Purchased surface water
Roland	Sequoyah	2,842	Community	Surface water
Sequoyah Co. Rwd #4	Sequoyah	1,750	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, “East Central Oklahoma Water Authority, PWSID OK1021713, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/east-central-oklahoma-water-authority-ok1021713 (data as of October 1, 2026).