LEFLORE CO. RWD #18
Oklahoma — Community Water System — PWSID: OK3004009
System Information
| PWSID | OK3004009 |
| System Name | LEFLORE CO. RWD #18 |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| 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 |
| Address | Milena Weaver, Manager |
| Organization | LEFLORE CO. RWD #18 |
| Phone | 918-677-2360 |
Population & Service
| Population Served | 3,870 |
| Service Connections | 1,624 |
Drinking Water Violations (122)
This water system has 122 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2025 | Dec 31, 2025 | MCL | Yes | No | .064 MG/L | 0.060 mg/L | .06 | Archived | Dec 31, 2025 | — | |
| Oct 1, 2025 | Oct 31, 2025 | MON | No | No | — | — | — | Archived | Oct 31, 2025 | — | |
| Oct 1, 2025 | Oct 31, 2025 | MON | No | No | — | — | — | Archived | Oct 31, 2025 | — | |
| Oct 1, 2025 | Oct 31, 2025 | MR | No | Yes | — | 4.0 mg/L | — | Archived | Oct 31, 2025 | — | |
| Oct 1, 2025 | Oct 31, 2025 | MR | No | Yes | — | 4.0 mg/L | — | Archived | Oct 31, 2025 | — | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .067 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | — | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .064 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | — | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .064 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | — | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .064 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | — | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .064 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | — | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .067 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | — | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .067 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | — | |
| Jul 1, 2025 | Sep 30, 2025 | MCL | Yes | No | .067 MG/L | 0.060 mg/L | .06 | Archived | Sep 30, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Unaddressed | — | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Unaddressed | — | — | |
| Apr 1, 2023 | Jun 30, 2023 | MCL | Yes | No | .088 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2023 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MCL | Yes | No | .088 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2023 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MCL | Yes | No | .088 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2023 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MCL | Yes | No | .088 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2023 | — | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .089 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2023 | — | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .089 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2023 | — | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .089 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2023 | — | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .089 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2023 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .093 MG/L | 0.080 mg/L | .08 | Archived | Dec 31, 2022 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .093 MG/L | 0.080 mg/L | .08 | Archived | Dec 31, 2022 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .093 MG/L | 0.080 mg/L | .08 | Archived | Dec 31, 2022 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .093 MG/L | 0.080 mg/L | .08 | Archived | Dec 31, 2022 | — | |
| Jul 1, 2022 | Sep 30, 2022 | MCL | Yes | No | .092 MG/L | 0.080 mg/L | .08 | Archived | Sep 30, 2022 | — | |
| Jul 1, 2022 | Sep 30, 2022 | MCL | Yes | No | .092 MG/L | 0.080 mg/L | .08 | Archived | Sep 30, 2022 | — | |
| Jul 1, 2022 | Sep 30, 2022 | MCL | Yes | No | .092 MG/L | 0.080 mg/L | .08 | Archived | Sep 30, 2022 | — | |
| Jul 1, 2022 | Sep 30, 2022 | MCL | Yes | No | .092 MG/L | 0.080 mg/L | .08 | Archived | Sep 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MCL | Yes | No | .084 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MCL | Yes | No | .084 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MCL | Yes | No | .084 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MCL | Yes | No | .084 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2022 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | .093 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | .093 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | .091 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | .091 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | .091 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | .093 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .082 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .082 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .082 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2020 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .063 MG/L | 0.060 mg/L | .06 | Resolved | Dec 31, 2019 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .063 MG/L | 0.060 mg/L | .06 | Resolved | Dec 31, 2019 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .063 MG/L | 0.060 mg/L | .06 | Resolved | Dec 31, 2019 | — |
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.