Public water system · OK3003405
ActiveRyan Utilities Authority
At a glance
Ryan Utilities Authority (PWSID OK3003405) is an active community water system in Jefferson County, Oklahoma. It reports serving 800 people through 415 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, 10 are health-based, and the most recent began in December 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
800
Service connections
415
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Ryan Utilities Authority compare with other water systems in Jefferson County?
By EPA's size categories, Ryan Utilities Authority is a small system (501 to 3,300 people). Jefferson County has 6 active public water systems, and Ryan Utilities Authority is the 4th-largest of them by population served. Its population served is about 63% below the county average of 2,154 people per system, and accounts for 6.2% of the 12,925 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 Ryan Utilities 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. 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 Ryan Utilities Authority?
EPA lists Ryan Utilities 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. 6 of the 6 active systems in Jefferson County (100%) are also owned by a local government.
Does Ryan Utilities Authority have drinking water violations?
Of the 12 most recent violations in EPA's records, 10 are health-based, and the most recent began in December 2025. The violations listed here began between January 2025 and December 2025. By type: 10 contaminant level above the legal limit and 2 monitoring and reporting. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (8 of them). EPA lists 10 as archived and 2 as resolved. 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. 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 |
|---|---|---|---|---|
| 2025-12-30 | 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 |
| 2025-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 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 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | 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 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
| 2025-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2025-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2025-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2025-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
| 2025-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | 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.
Ryan Utilities Authority: frequently asked questions
Who runs Ryan Utilities Authority?
Ryan Utilities Authority (PWSID OK3003405) is a community water system owned by a local government. It is regulated by the OK state drinking water program.
How many people does Ryan Utilities Authority serve?
Ryan Utilities Authority reports serving 800 people through 415 service connections in Jefferson County, Oklahoma.
Where does Ryan Utilities Authority 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 Ryan Utilities Authority have any drinking water violations?
Of the 12 most recent violations in EPA's records, 10 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 Ryan Utilities 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, 10 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 Ryan Utilities Authority's water quality report?
As a community water system, Ryan Utilities 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 Jefferson County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Jefferson Co Cons Rwd #1 | Jefferson | 8,398 | Community | Purchased surface water |
| Waurika Public Works Authority | Jefferson | 2,100 | Community | Surface water |
| Ringling | Jefferson | 1,200 | Community | Groundwater |
| Terral | Jefferson | 386 | Community | Purchased surface water |
| Cornish | Jefferson | 41 | Community | Purchased groundwater |
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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, “Ryan Utilities Authority, PWSID OK3003405, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/ryan-utilities-authority-ok3003405 (data as of October 1, 2026).