BLACKWELL MUNICIPAL AUTHORITY
Oklahoma - Community Water System - PWSID: OK1021101
System Information
| PWSID | OK1021101 |
| System Name | BLACKWELL MUNICIPAL 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 | BLACKWELL |
| ZIP Code | 74631 |
| Address | Patricia Hullet, Chairwoman |
| Organization | BLACKWELL MUNICIPAL AUTHORITY |
| Phone | 580-363-7250 |
Population & Service
| Population Served | 7,668 |
| Service Connections | 3,136 |
Drinking Water Violations (254)
This water system has 254 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 | Jul 31, 2025 | TT | Yes | No | - | - | - | Archived | Jul 31, 2025 | - | |
| Jul 1, 2025 | Jul 31, 2025 | TT | Yes | No | - | - | - | Archived | Jul 31, 2025 | - | |
| Jul 1, 2025 | Jul 31, 2025 | TT | Yes | No | - | - | - | Archived | Jul 31, 2025 | - | |
| Jun 1, 2025 | Jun 30, 2025 | TT | Yes | No | - | - | - | Archived | Jun 30, 2025 | - | |
| Jun 1, 2025 | Jun 30, 2025 | TT | Yes | No | - | - | - | Archived | Jun 30, 2025 | - | |
| Jun 1, 2025 | Jun 30, 2025 | TT | Yes | No | - | - | - | Archived | Jun 30, 2025 | - | |
| May 1, 2025 | May 31, 2025 | MR | No | Yes | - | - | - | Resolved | May 31, 2025 | - | |
| May 1, 2025 | May 31, 2025 | MR | No | Yes | - | - | - | Resolved | May 31, 2025 | - | |
| May 1, 2025 | May 31, 2025 | MR | No | Yes | - | - | - | Resolved | May 31, 2025 | - | |
| May 1, 2025 | May 31, 2025 | MR | No | Yes | - | 0.8 mg/L | - | Resolved | May 31, 2025 | - | |
| May 1, 2025 | May 31, 2025 | MR | No | Yes | - | 0.8 mg/L | - | Resolved | May 31, 2025 | - | |
| May 1, 2025 | May 31, 2025 | MR | No | Yes | - | 0.8 mg/L | - | Resolved | May 31, 2025 | - | |
| Apr 1, 2025 | - | MR | No | No | - | 0.080 mg/L | - | Resolved | May 6, 2025 | - | |
| Apr 1, 2025 | - | MR | No | No | - | 0.080 mg/L | - | Resolved | May 6, 2025 | - | |
| Jan 1, 2025 | Jan 31, 2025 | TT | Yes | No | - | - | - | Resolved | Jan 31, 2025 | - | |
| Jan 1, 2025 | Jan 31, 2025 | TT | Yes | No | - | - | - | Resolved | Jan 31, 2025 | - | |
| Jan 1, 2025 | Jan 31, 2025 | TT | Yes | No | - | - | - | Resolved | Jan 31, 2025 | - | |
| Jan 1, 2025 | Jan 31, 2025 | TT | Yes | No | - | - | - | Resolved | Jan 31, 2025 | - | |
| Jun 1, 2024 | Jun 30, 2024 | TT | Yes | No | - | - | - | Resolved | Jun 30, 2024 | - | |
| Jun 1, 2024 | Jun 30, 2024 | TT | Yes | No | - | - | - | Resolved | Jun 30, 2024 | - | |
| Jun 1, 2024 | Jun 30, 2024 | TT | Yes | No | - | - | - | Resolved | Jun 30, 2024 | - | |
| Jun 1, 2024 | Jun 30, 2024 | TT | Yes | No | - | - | - | Resolved | Jun 30, 2024 | - | |
| Mar 1, 2024 | Mar 31, 2024 | TT | Yes | No | - | - | - | Resolved | Mar 31, 2024 | - | |
| Mar 1, 2024 | Mar 31, 2024 | TT | Yes | No | - | - | - | Resolved | Mar 31, 2024 | - | |
| Mar 1, 2024 | Mar 31, 2024 | TT | Yes | No | - | - | - | Resolved | Mar 31, 2024 | - | |
| Mar 1, 2024 | Mar 31, 2024 | TT | Yes | No | - | - | - | Resolved | Mar 31, 2024 | - | |
| Mar 1, 2024 | Mar 31, 2024 | TT | Yes | No | - | - | - | Resolved | Mar 31, 2024 | - | |
| Mar 1, 2024 | Mar 31, 2024 | TT | Yes | No | - | - | - | Resolved | Mar 31, 2024 | - | |
| Mar 1, 2024 | Mar 31, 2024 | TT | Yes | No | - | - | - | Resolved | Mar 31, 2024 | - | |
| Mar 1, 2024 | Mar 31, 2024 | TT | Yes | No | - | - | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .085 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .085 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .085 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .085 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2023 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .082 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .082 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .082 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .082 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2022 | - | |
| Sep 1, 2022 | Sep 30, 2022 | TT | Yes | No | - | - | - | Resolved | Sep 30, 2022 | - | |
| Sep 1, 2022 | Sep 30, 2022 | TT | Yes | No | - | - | - | Resolved | Sep 30, 2022 | - | |
| Sep 1, 2022 | Sep 30, 2022 | TT | Yes | No | - | - | - | Resolved | Sep 30, 2022 | - | |
| Sep 1, 2022 | Sep 30, 2022 | TT | Yes | No | - | - | - | Resolved | Sep 30, 2022 | - | |
| May 1, 2021 | May 31, 2021 | TT | Yes | No | - | - | - | Resolved | May 31, 2021 | - | |
| May 1, 2021 | May 31, 2021 | TT | Yes | No | - | - | - | Resolved | May 31, 2021 | - | |
| May 1, 2021 | May 31, 2021 | TT | Yes | No | - | - | - | Resolved | May 31, 2021 | - | |
| May 1, 2021 | May 31, 2021 | TT | Yes | No | - | - | - | Resolved | May 31, 2021 | - | |
| Aug 1, 2020 | Aug 31, 2020 | MR | No | Yes | - | 1.0 mg/L | - | Resolved | Aug 31, 2020 | - | |
| Aug 1, 2020 | Aug 31, 2020 | MR | No | Yes | - | 1.0 mg/L | - | Resolved | Aug 31, 2020 | - | |
| Aug 1, 2020 | Aug 31, 2020 | MR | No | Yes | - | 1.0 mg/L | - | Resolved | Aug 31, 2020 | - | |
| Aug 1, 2020 | Aug 31, 2020 | MR | No | Yes | - | 1.0 mg/L | - | Resolved | Aug 31, 2020 | - |
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.