Public water system · OK1021602
ActiveOkla Ordnance Works Authority
At a glance
Okla Ordnance Works Authority (PWSID OK1021602) is an active community water system in Mayes County, Oklahoma. It reports serving 4,000 people through 113 service connections. Its primary water source is surface water, and EPA lists it as owned by a state government. Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,000
Service connections
113
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Okla Ordnance Works Authority compare with other water systems in Mayes County?
By EPA's size categories, Okla Ordnance Works Authority is a medium system (3,301 to 10,000 people). Mayes County has 23 active public water systems, and Okla Ordnance Works Authority is the 4th-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% 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 Okla Ordnance Works Authority is about 40% 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 Okla Ordnance Works Authority?
EPA lists Okla Ordnance Works Authority as owned by a state 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. 1 of the 23 active systems in Mayes County (4.3%) are also owned by a state government.
Does Okla Ordnance Works Authority have drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in October 2024. The violations listed here began between August 1987 and October 2024. By type: 8 monitoring and reporting, 2 required treatment not met, 1 reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (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 |
|---|---|---|---|---|
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2013-12-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2009-05-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chloritecode 1009 | No | Resolved |
| 1998-02-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1997-06-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1996-12-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-01-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1991-08-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1991-06-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1987-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | 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.
Okla Ordnance Works Authority: frequently asked questions
Who runs Okla Ordnance Works Authority?
Okla Ordnance Works Authority (PWSID OK1021602) is a community water system owned by a state government. It is regulated by the OK state drinking water program.
How many people does Okla Ordnance Works Authority serve?
Okla Ordnance Works Authority reports serving 4,000 people through 113 service connections in Mayes County, Oklahoma.
Where does Okla Ordnance Works 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 Okla Ordnance Works Authority have any drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in October 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 Okla Ordnance Works 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, 3 are health-based, and the most recent began in October 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the OK state drinking water program.
Where can I find Okla Ordnance Works Authority's water quality report?
As a community water system, Okla Ordnance Works 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 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 |
| Mayes Co Rwd #4 | Mayes | 4,183 | Community | Purchased 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, “Okla Ordnance Works Authority, PWSID OK1021602, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/okla-ordnance-works-authority-ok1021602 (data as of October 1, 2026).