GRADY CO RWD #7 (NINNEKAH)
Oklahoma - Community Water System - PWSID: OK2002633
System Information
| PWSID | OK2002633 |
| System Name | GRADY CO RWD #7 (NINNEKAH) |
| 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 | Jan 22, 1981 |
| Last Reported | Feb 18, 2026 |
Location & Contact
| State | Oklahoma |
| City | NINNEKAH |
| ZIP Code | 73067 |
| Address | Mr. John Donnellan, Chairperson |
| Organization | GRADY COUNTY RWD #7 (NINNEKAH) |
| Phone | 405-224-2398 |
Population & Service
| Population Served | 2,425 |
| Service Connections | 1,225 |
Drinking Water Violations (89)
This water system has 89 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 17, 2024 | - | RPT | No | No | - | - | - | Resolved | Sep 15, 2025 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | Sep 15, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Sep 15, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Sep 15, 2025 | - | |
| Oct 1, 2024 | - | MR | No | No | - | TT | - | Unaddressed | - | - | |
| Oct 1, 2024 | - | MR | No | No | - | TT | - | Unaddressed | - | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Jan 1, 2024 | Jan 31, 2024 | MON | No | Yes | - | - | - | Resolved | Jan 31, 2024 | - | |
| Jan 1, 2024 | Jan 31, 2024 | MON | No | Yes | - | - | - | Resolved | Jan 31, 2024 | - | |
| Jan 1, 2024 | Jan 31, 2024 | MON | No | Yes | - | - | - | Resolved | Jan 31, 2024 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2014 | Dec 31, 2019 | MR | No | Yes | - | 30 ug/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2014 | Dec 31, 2019 | MR | No | Yes | - | 30 ug/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2014 | Dec 31, 2019 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2014 | Dec 31, 2019 | MR | No | Yes | - | 30 ug/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2014 | Dec 31, 2019 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2014 | Dec 31, 2019 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2014 | Dec 31, 2019 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2014 | Dec 31, 2019 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2014 | Dec 31, 2019 | MR | No | Yes | - | 30 ug/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2014 | Dec 31, 2019 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2014 | Dec 31, 2019 | MR | No | Yes | - | 4 mrem/yr | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2014 | Dec 31, 2019 | MR | No | Yes | - | 4 mrem/yr | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2014 | Dec 31, 2019 | MR | No | Yes | - | 4 mrem/yr | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2014 | Dec 31, 2019 | MR | No | Yes | - | 4 mrem/yr | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2014 | Dec 31, 2019 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2014 | Dec 31, 2019 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2019 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2009 | - | |
| Apr 1, 2009 | Jun 30, 2009 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2009 | - | |
| Apr 1, 2009 | Jun 30, 2009 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2009 | - | |
| Apr 1, 2009 | Jun 30, 2009 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2009 | - | |
| Apr 1, 2009 | Jun 30, 2009 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2009 | - | |
| Apr 1, 2009 | Jun 30, 2009 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2009 | - | |
| Jan 1, 2009 | Mar 31, 2009 | MCL | Yes | No | .012 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2009 | - | |
| Jan 1, 2009 | Mar 31, 2009 | MCL | Yes | No | .012 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2009 | - | |
| Jan 1, 2009 | Mar 31, 2009 | MCL | Yes | No | .012 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2009 | - | |
| Jan 1, 2009 | Mar 31, 2009 | MCL | Yes | No | .012 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2009 | - | |
| Jan 1, 2009 | Mar 31, 2009 | MCL | Yes | No | .012 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2009 | - | |
| Oct 1, 2008 | Dec 31, 2008 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Dec 31, 2008 | - | |
| Oct 1, 2008 | Dec 31, 2008 | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Dec 31, 2008 | - |
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.