Public water system record
Grady Co RWD #7 (Ninnekah)
Serves an area of Grady County, OK that includes Ninnekah · 2,425 people served
Federal records show 1 health-based violation and 9 monitoring/reporting issues for Grady Co RWD #7 (Ninnekah) in the last ten years. The most serious issue in this window was a resolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 9
Key facts
- Grady Co RWD #7 (Ninnekah) draws water from 10 wells.
- Most recent formal enforcement: compliance order with a penalty by Oklahoma, April 2010.
- Record on file since 1992, with 8 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 1,225 service lines.
Check whether Grady Co RWD #7 (Ninnekah) serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2024 | Active |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Gross Beta Particle Activity
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
Full record since 1992
EPA's records for Grady Co RWD #7 (Ninnekah) go back to 1992. Before October 19, 2016 they list 8 health-based violations (8 resolved) and 6 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 2 |
| 2000s | 7 | 0 |
| 2010 to October 18, 2016 | 0 | 4 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 1 | 4 |
Most recent health-based violation before October 19, 2016: Arsenic, began July 2009, Resolved.
Show all 8 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jul 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Apr 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Jan 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Oct 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Jul 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Apr 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 10.4 µg/L, federal limit 10 µg/L (at or just above the limit)
|
Oct 1, 2007 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Nov 1, 1992 | Resolved |
Enforcement actions
Oklahoma regulators took 5 formal enforcement actions against Grady Co RWD #7 (Ninnekah) between 2008 and 2010. The most recent was a compliance order with a penalty in April 2010.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 1, 2010 | Oklahoma | Compliance order with a penalty | 7 violations (7 health-based): Arsenic |
| Sep 30, 2009 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Arsenic |
| Jul 28, 2009 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Arsenic |
| May 4, 2009 | Oklahoma | Compliance order with a penalty | 4 violations (4 health-based): Arsenic |
| Oct 20, 2008 | Oklahoma | Compliance order with a penalty | 3 violations (3 health-based): Arsenic |
What the violations mean
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Grady Co RWD #7 (Ninnekah) draws water from 10 wells. 1 other community water system buys water from Grady Co RWD #7 (Ninnekah).
Community systems that buy water from it
- Cement Cement, OK
Annual water quality report
Grady Co RWD #7 (Ninnekah) must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Oklahoma.
Certified drinking water labs by state EPA guidance for private wells