Public water system · OK3001654
ActiveComanche Co Rwd #4
At a glance
Comanche Co Rwd #4 (PWSID OK3001654) is an active community water system in Comanche County, Oklahoma. It reports serving 3,000 people through 1,579 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 September 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,000
Service connections
1,579
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Comanche Co Rwd #4 compare with other water systems in Comanche County?
By EPA's size categories, Comanche Co Rwd #4 is a small system (501 to 3,300 people). Comanche County has 25 active public water systems, and Comanche Co Rwd #4 is the 4th-largest of them by population served. Its population served is about half of the county average of 5,492 people per system, and accounts for 2.2% of the 137,288 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 Comanche Co Rwd #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. 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 Comanche Co Rwd #4?
EPA lists Comanche 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 25 active systems in Comanche County (56%) are also owned by a local government.
Does Comanche Co Rwd #4 have drinking water violations?
Of the 12 most recent violations in EPA's records, 10 are health-based, and the most recent began in September 2025. The violations listed here began between January 2021 and September 2025. By type: 9 contaminant level above the legal limit, 1 monitoring and reporting, 1 reporting and 1 required treatment not met. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (10 of them). EPA lists 9 as archived and 3 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 |
|---|---|---|---|---|
| 2025-09-29 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 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 |
| 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 |
| 2021-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2021-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2021-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2021-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2021-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2021-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2021-01-01 | 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.
Comanche Co Rwd #4: frequently asked questions
Who runs Comanche Co Rwd #4?
Comanche Co Rwd #4 (PWSID OK3001654) is a community water system owned by a local government. It is regulated by the OK state drinking water program.
How many people does Comanche Co Rwd #4 serve?
Comanche Co Rwd #4 reports serving 3,000 people through 1,579 service connections in Comanche County, Oklahoma.
Where does Comanche 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 Comanche Co Rwd #4 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 September 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 Comanche 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, 10 are health-based, and the most recent began in September 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 Comanche Co Rwd #4's water quality report?
As a community water system, Comanche 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 Comanche County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Lawton | Comanche | 92,757 | Community | Surface water |
| Fort Sill Hqusafacfs | Comanche | 23,000 | Community | Purchased surface water |
| Elgin Pwa | Comanche | 3,300 | Community | Groundwater |
| Comanche Co Rwd #1 | Comanche | 2,800 | Community | Purchased surface water |
| Cache | Comanche | 2,371 | Community | Groundwater |
| Comanche Co Rwd #3 | Comanche | 2,325 | 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, “Comanche Co Rwd #4, PWSID OK3001654, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/comanche-co-rwd-4-ok3001654 (data as of October 1, 2026).