Public water system · OK1010412
ActiveAtoka Co. Rws & Swmd #4
At a glance
Atoka Co. Rws & Swmd #4 (PWSID OK1010412) is an active community water system in Atoka County, Oklahoma. It reports serving 3,000 people through 3,197 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, 6 are health-based, and the most recent began in December 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,000
Service connections
3,197
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Atoka Co. Rws & Swmd #4 compare with other water systems in Atoka County?
By EPA's size categories, Atoka Co. Rws & Swmd #4 is a small system (501 to 3,300 people). Atoka County has 7 active public water systems, and Atoka Co. Rws & Swmd #4 is the largest of them by population served. Its population served is about twice the county average of 1,499 people per system, and accounts for 29% of the 10,495 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 Atoka Co. Rws & Swmd #4 is about 55% 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 Atoka Co. Rws & Swmd #4?
EPA lists Atoka Co. Rws & Swmd #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. 5 of the 7 active systems in Atoka County (71%) are also owned by a local government.
Does Atoka Co. Rws & Swmd #4 have drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in December 2025. The violations listed here began between July 2025 and December 2025. By type: 5 monitoring and reporting, 4 contaminant level above the legal limit, 2 required treatment not met and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (3 of them). EPA lists 6 as resolved and 6 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 |
|---|---|---|---|---|
| 2025-12-30 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2025-12-30 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2025-11-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorine dioxidecode 1008 | No | Resolved |
| 2025-11-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2025-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
| 2025-10-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Archived |
| 2025-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2025-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorine dioxidecode 1008 | No | Resolved |
| 2025-07-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Archived |
| 2025-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2025-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
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.
Atoka Co. Rws & Swmd #4: frequently asked questions
Who runs Atoka Co. Rws & Swmd #4?
Atoka Co. Rws & Swmd #4 (PWSID OK1010412) is a community water system owned by a local government. It is regulated by the OK state drinking water program.
How many people does Atoka Co. Rws & Swmd #4 serve?
Atoka Co. Rws & Swmd #4 reports serving 3,000 people through 3,197 service connections in Atoka County, Oklahoma.
Where does Atoka Co. Rws & Swmd #4 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 Atoka Co. Rws & Swmd #4 have any drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in December 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 Atoka Co. Rws & Swmd #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, 6 are health-based, and the most recent began in December 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 Atoka Co. Rws & Swmd #4's water quality report?
As a community water system, Atoka Co. Rws & Swmd #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 Atoka County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Atoka | Atoka | 2,988 | Community | Surface water |
| Atoka Co. Rwd #3 (Caney) | Atoka | 1,500 | Community | Groundwater |
| Stringtown Pwa | Atoka | 1,105 | Community | Purchased surface water |
| Mack Alford Correctional Center | Atoka | 952 | Community | Surface water |
| Howard Mcleod Correctional Center | Atoka | 825 | Community | Groundwater |
| Atoka Co. Rwd #1 (Wardville) | Atoka | 125 | 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, “Atoka Co. Rws & Swmd #4, PWSID OK1010412, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/atoka-co-rws-swmd-4-ok1010412 (data as of October 1, 2026).