GRADY CO RWD #7 (NINNEKAH)
PWS ID: OK2002633 · NINNEKAH, Oklahoma 73067
Population Served
2,425
Total Violations
89
Health-Based Violations
43
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,225
- County
- Grady
- School/Daycare
- No
- MCL Violations
- 41
- Monitoring Violations
- 31
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MCL | 40 | 2009 |
| Gross Beta Particle Activity | MR | 4 | 2014 |
| Lead and Copper Rule | MR | 4 | 2024 |
| Combined Radium (-226 and -228) | MR | 4 | 2014 |
| Arsenic | MR | 4 | 2017 |
| Gross Alpha, Excl. Radon and U | MR | 4 | 2014 |
| Combined Uranium | MR | 4 | 2014 |
| Revised Total Coliform Rule | MON | 3 | 2024 |
| Chlorine | MR | 3 | 2024 |
| LEAD AND COPPER RULE REVISIONS | TT | 2 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 2 | 2024 |
| Coliform (TCR) | MCL | 1 | 1992 |
| Coliform (TCR) | MR | 1 | 1993 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.