POTEAU VALLEY IMPROVEMENT AUTHORITY
Oklahoma - Community Water System - PWSID: OK1020104
System Information
| PWSID | OK1020104 |
| System Name | POTEAU VALLEY IMPROVEMENT AUTHORITY |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 06 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 11, 1980 |
| Last Reported | Feb 18, 2026 |
Location & Contact
| State | Oklahoma |
| City | WISTER |
| ZIP Code | 74966-9124 |
| Address | Joe Mode, Chairman |
| Organization | POTEAU VALLEY IMPROVEMENT AUTHORITY |
| Phone | 918-647-9946 |
Population & Service
| Population Served | 10 |
| Service Connections | 147 |
Drinking Water Violations (133)
This water system has 133 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .061 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .061 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .061 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .061 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .068 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .068 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .068 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .068 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | - | |
| Apr 1, 2025 | Jun 30, 2025 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Archived | Jun 30, 2025 | - | |
| Apr 1, 2025 | Jun 30, 2025 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Archived | Jun 30, 2025 | - | |
| Apr 1, 2025 | Jun 30, 2025 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Archived | Jun 30, 2025 | - | |
| Apr 1, 2025 | Jun 30, 2025 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Archived | Jun 30, 2025 | - | |
| Feb 1, 2025 | Feb 28, 2025 | TT | Yes | No | - | - | - | Archived | Feb 28, 2025 | - | |
| Feb 1, 2025 | Feb 28, 2025 | TT | Yes | No | - | - | - | Archived | Feb 28, 2025 | - | |
| Feb 1, 2025 | Feb 28, 2025 | TT | Yes | No | - | - | - | Archived | Feb 28, 2025 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | Jul 15, 2025 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | Jul 15, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Jul 15, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Jul 15, 2025 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.003 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.003 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.003 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.003 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.7 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.7 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.7 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 0.7 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jun 1, 2023 | Jun 30, 2023 | MR | No | Yes | - | 1.0 mg/L | - | Resolved | Jun 30, 2023 | - | |
| Jun 1, 2023 | Jun 30, 2023 | MR | No | Yes | - | 1.0 mg/L | - | Resolved | Jun 30, 2023 | - | |
| Jun 1, 2023 | Jun 30, 2023 | MR | No | Yes | - | 1.0 mg/L | - | Resolved | Jun 30, 2023 | - | |
| Jun 1, 2023 | Jun 30, 2023 | MR | No | Yes | - | 1.0 mg/L | - | Resolved | Jun 30, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2023 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | .08 | Archived | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | .08 | Archived | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | .08 | Archived | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | .08 | Archived | Dec 31, 2022 | - | |
| Sep 1, 2022 | Sep 30, 2022 | MR | No | Yes | - | 1.0 mg/L | - | Archived | Sep 30, 2022 | - | |
| Sep 1, 2022 | Sep 30, 2022 | MR | No | Yes | - | 1.0 mg/L | - | Archived | Sep 30, 2022 | - | |
| Sep 1, 2022 | Sep 30, 2022 | MR | No | Yes | - | 1.0 mg/L | - | Archived | Sep 30, 2022 | - |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.