Public water system · OK3006809
ActiveSequoyah Co. Rwd #4
At a glance
Sequoyah Co. Rwd #4 (PWSID OK3006809) is an active community water system in Sequoyah County, Oklahoma. It reports serving 1,750 people through 823 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in January 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,750
Service connections
823
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Sequoyah Co. Rwd #4 compare with other water systems in Sequoyah County?
By EPA's size categories, Sequoyah Co. Rwd #4 is a small system (501 to 3,300 people). Sequoyah County has 15 active public water systems, and Sequoyah Co. Rwd #4 is the 6th-largest of them by population served. Its population served is about 35% below the county average of 2,693 people per system, and accounts for 4.3% 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 Sequoyah Co. Rwd #4 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 299 Oklahoma systems (24%) list purchased surface water as their primary source.
Who owns and regulates Sequoyah Co. Rwd #4?
EPA lists Sequoyah Co. Rwd #4 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 Sequoyah Co. Rwd #4 have drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in January 2025. The violations listed here began between September 2003 and January 2025. By type: 7 monitoring and reporting, 4 contaminant level above the legal limit and 1 monitoring. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (6 of them). 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 |
|---|---|---|---|---|
| 2025-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2025-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-06-30 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2018-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2018-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2017-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2017-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2013-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2013-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2009-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2003-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | 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.
Sequoyah Co. Rwd #4: frequently asked questions
Who runs Sequoyah Co. Rwd #4?
Sequoyah Co. Rwd #4 (PWSID OK3006809) is a community water system owned by a local government. It is regulated by the OK state drinking water program.
How many people does Sequoyah Co. Rwd #4 serve?
Sequoyah Co. Rwd #4 reports serving 1,750 people through 823 service connections in Sequoyah County, Oklahoma.
Where does Sequoyah Co. Rwd #4 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 Sequoyah Co. Rwd #4 have any drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in January 2025. 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 Sequoyah Co. Rwd #4'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, 4 are health-based, and the most recent began in January 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the OK state drinking water program.
Where can I find Sequoyah Co. Rwd #4's water quality report?
As a community water system, Sequoyah Co. Rwd #4 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 |
| Gore Pwa | Sequoyah | 1,688 | Community | 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, “Sequoyah Co. Rwd #4, PWSID OK3006809, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/sequoyah-co-rwd-4-ok3006809 (data as of October 1, 2026).