Public water system · OK3004617
ActiveMayes Co Rwd #4
At a glance
Mayes Co Rwd #4 (PWSID OK3004617) is an active community water system in Mayes County, Oklahoma. It reports serving 4,183 people through 1,789 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 11 violations for this system; 2 are health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,183
Service connections
1,789
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Mayes Co Rwd #4 compare with other water systems in Mayes County?
By EPA's size categories, Mayes Co Rwd #4 is a medium system (3,301 to 10,000 people). Mayes County has 23 active public water systems, and Mayes Co Rwd #4 is the 3rd-largest of them by population served. Its population served is about twice the county average of 1,931 people per system, and accounts for 9.4% of the 44,401 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 Mayes Co Rwd #4 is about 38% 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 Mayes Co Rwd #4?
EPA lists Mayes 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. 16 of the 23 active systems in Mayes County (70%) are also owned by a local government.
Does Mayes Co Rwd #4 have drinking water violations?
EPA's records list 11 violations for this system; 2 are health-based, and the most recent began in July 2025. The violations listed here began between August 1995 and July 2025. By type: 7 monitoring and reporting, 1 required treatment not met, 1 reporting, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 8 as resolved, 2 as addressed and 1 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. Addressed means the violation is not resolved or archived and is covered by formal enforcement. 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 |
|---|---|---|---|---|
| 2025-07-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Addressed |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Addressed |
| 2024-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2024-07-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2023-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2013-11-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2005-04-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1999-07-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1997-08-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | 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.
Mayes Co Rwd #4: frequently asked questions
Who runs Mayes Co Rwd #4?
Mayes Co Rwd #4 (PWSID OK3004617) is a community water system owned by a local government. It is regulated by the OK state drinking water program.
How many people does Mayes Co Rwd #4 serve?
Mayes Co Rwd #4 reports serving 4,183 people through 1,789 service connections in Mayes County, Oklahoma.
Where does Mayes 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 Mayes Co Rwd #4 have any drinking water violations?
EPA's records list 11 violations for this system; 2 are health-based, and the most recent began in July 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 Mayes 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. EPA's records list 11 violations for this system; 2 are health-based, and the most recent began in July 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 Mayes Co Rwd #4's water quality report?
As a community water system, Mayes 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 Mayes County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Pryor | Mayes | 8,784 | Community | Purchased surface water |
| Mayes Co Rwd # 2 | Mayes | 6,280 | Community | Purchased surface water |
| Okla Ordnance Works Authority | Mayes | 4,000 | Community | Surface water |
| Mayes Co Rwd # 6 | Mayes | 3,750 | Community | Surface water |
| Mayes Co Rwd # 5 | Mayes | 3,360 | Community | Purchased surface water |
| Mayes Co Rwd # 9 | Mayes | 2,578 | 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, “Mayes Co Rwd #4, PWSID OK3004617, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/mayes-co-rwd-4-ok3004617 (data as of October 1, 2026).