Public water system · OK1020104
ActivePoteau Valley Improvement Authority
At a glance
Poteau Valley Improvement Authority (PWSID OK1020104) is an active community water system in Le Flore County, Oklahoma. It reports serving 10 people through 147 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, 7 are health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
10
Service connections
147
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Poteau Valley Improvement Authority compare with other water systems in Le Flore County?
By EPA's size categories, Poteau Valley Improvement Authority is a very small system (500 people or fewer). Le Flore County has 21 active public water systems. Its population served is well below the county average of 2,252 people per system, and accounts for less than 0.1% of the 47,285 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 Poteau Valley Improvement 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. 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 Poteau Valley Improvement Authority?
EPA lists Poteau Valley Improvement 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. 20 of the 21 active systems in Le Flore County (95%) are also owned by a local government.
Does Poteau Valley Improvement Authority have drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in October 2025. The violations listed here began between June 2023 and October 2025. By type: 5 contaminant level above the legal limit, 4 monitoring and reporting, 2 required treatment not met and 1 reporting. The contaminant or rule involved most often is Haloacetic acids (HAA5) (5 of them). EPA lists 6 as archived and 6 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 |
|---|---|---|---|---|
| 2025-10-01 | 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 | Haloacetic acids (HAA5)code 2456 | 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 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
| 2025-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
| 2025-02-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Archived |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Glyphosatecode 2034 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Atrazinecode 2050 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4-Dcode 2105 | No | Resolved |
| 2023-06-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chloritecode 1009 | No | 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.
Poteau Valley Improvement Authority: frequently asked questions
Who runs Poteau Valley Improvement Authority?
Poteau Valley Improvement Authority (PWSID OK1020104) is a community water system owned by a local government. It is regulated by the OK state drinking water program.
How many people does Poteau Valley Improvement Authority serve?
Poteau Valley Improvement Authority reports serving 10 people through 147 service connections in Le Flore County, Oklahoma.
Where does Poteau Valley Improvement 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 Poteau Valley Improvement Authority have any drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in October 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 Poteau Valley Improvement 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, 7 are health-based, and the most recent began in October 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 Poteau Valley Improvement Authority's water quality report?
As a community water system, Poteau Valley Improvement 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 Le Flore County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Leflore Co. Rwd #14 | Le Flore | 9,077 | Community | Purchased surface water |
| Poteau Pwa | Le Flore | 7,939 | Community | Purchased surface water |
| Leflore Co. Rwd #2 | Le Flore | 4,700 | Community | Purchased surface water |
| Leflore Co. Rwd #18 | Le Flore | 3,870 | Community | Purchased surface water |
| Heavener Utility Auth - Psg | Le Flore | 3,000 | Community | Purchased surface water |
| Spiro | Le Flore | 2,200 | 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, “Poteau Valley Improvement Authority, PWSID OK1020104, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/poteau-valley-improvement-authority-ok1020104 (data as of October 1, 2026).