HENNESSEY
Oklahoma - Community Water System - PWSID: OK2003704
System Information
| PWSID | OK2003704 |
| System Name | HENNESSEY |
| System Type | Community Water System |
| Water Source | Ground 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 | HENNESSEY |
| ZIP Code | 73742-0306 |
| Address | The Honorable John R.Gritz, Mayor |
| Organization | HENNESSEY |
| Phone | 405-853-2416 |
Population & Service
| Population Served | 2,058 |
| Service Connections | 1,155 |
Drinking Water Violations (277)
This water system has 277 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Nov 28, 2022 | - | |
| Jan 1, 2022 | Mar 31, 2022 | MCL | Yes | No | 11 MG/L | - | 10 | Resolved | Mar 31, 2022 | - | |
| Jan 1, 2022 | Mar 31, 2022 | MCL | Yes | No | 11 MG/L | - | 10 | Resolved | Mar 31, 2022 | - | |
| Jan 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Sep 16, 2022 | - | |
| Jan 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Sep 16, 2022 | - | |
| Jan 1, 2022 | Mar 31, 2022 | MCL | Yes | No | 11 MG/L | - | 10 | Resolved | Mar 31, 2022 | - | |
| Jan 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Sep 16, 2022 | - | |
| Jan 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Sep 16, 2022 | - | |
| Jan 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Nov 28, 2022 | - | |
| Jan 1, 2022 | Mar 31, 2022 | MCL | Yes | No | 11 MG/L | - | 10 | Resolved | Mar 31, 2022 | - | |
| Jan 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Nov 28, 2022 | - | |
| Jan 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Nov 28, 2022 | - | |
| Jan 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Sep 16, 2022 | - | |
| Jul 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Dec 1, 2022 | - | |
| Jul 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Dec 1, 2022 | - | |
| Jul 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Dec 1, 2022 | - | |
| Jul 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Dec 1, 2022 | - | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | 20 MG/L | - | 10 | Resolved | Sep 30, 2020 | - | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | 20 MG/L | - | 10 | Resolved | Sep 30, 2020 | - | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | 20 MG/L | - | 10 | Resolved | Sep 30, 2020 | - | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | 20 MG/L | - | 10 | Resolved | Sep 30, 2020 | - | |
| Oct 1, 2019 | Dec 31, 2019 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2019 | - | |
| Oct 1, 2019 | Dec 31, 2019 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2019 | - | |
| Oct 1, 2019 | Dec 31, 2019 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2019 | - | |
| Oct 1, 2019 | Dec 31, 2019 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Feb 14, 2019 | - | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Feb 14, 2019 | - | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Feb 14, 2019 | - | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Feb 14, 2019 | - | |
| Oct 24, 2018 | - | MR | No | No | - | - | - | Resolved | Feb 14, 2019 | - | |
| Oct 24, 2018 | - | MR | No | No | - | - | - | Resolved | Feb 14, 2019 | - | |
| Oct 24, 2018 | - | MR | No | No | - | - | - | Resolved | Feb 14, 2019 | - | |
| Nov 1, 2017 | Nov 30, 2017 | MON | No | No | - | - | - | Resolved | Nov 30, 2017 | - | |
| Nov 1, 2017 | Nov 30, 2017 | MON | No | No | - | - | - | Resolved | Nov 30, 2017 | - | |
| Nov 1, 2017 | Nov 30, 2017 | MON | No | No | - | - | - | Resolved | Nov 30, 2017 | - | |
| Nov 1, 2017 | Nov 30, 2017 | MON | No | No | - | - | - | Resolved | Nov 30, 2017 | - | |
| Oct 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2017 | - | |
| Oct 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2017 | - | |
| Oct 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2017 | - | |
| Oct 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2017 | - | |
| Jul 1, 2017 | Sep 30, 2017 | MR | No | Yes | - | - | - | Resolved | Sep 30, 2017 | - | |
| Jul 1, 2017 | Sep 30, 2017 | MR | No | Yes | - | - | - | Resolved | Sep 30, 2017 | - | |
| Jul 1, 2017 | Sep 30, 2017 | MR | No | Yes | - | - | - | Resolved | Sep 30, 2017 | - | |
| Jul 1, 2017 | Sep 30, 2017 | MR | No | Yes | - | - | - | Resolved | Sep 30, 2017 | - | |
| Jul 1, 2016 | - | Other | No | No | - | - | - | Resolved | Mar 31, 2017 | - | |
| Jul 1, 2016 | - | Other | No | No | - | - | - | Resolved | Mar 31, 2017 | - | |
| Oct 1, 2014 | Dec 31, 2014 | MCL | Yes | No | 12 MG/L | - | 10 | Resolved | Dec 31, 2014 | - | |
| Oct 1, 2014 | Dec 31, 2014 | MCL | Yes | No | 12 MG/L | - | 10 | Resolved | Dec 31, 2014 | - | |
| Oct 1, 2014 | Dec 31, 2014 | MCL | Yes | No | 12 MG/L | - | 10 | Resolved | Dec 31, 2014 | - | |
| Oct 1, 2014 | Dec 31, 2014 | MCL | Yes | No | 12 MG/L | - | 10 | Resolved | Dec 31, 2014 | - |
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.