Public water system record
Mayes Co RWD # 9
Serves an area of Mayes County, OK that includes Kenwood, Rose, Little Rock and 5 more places · 2,578 people served
Federal records show 2 health-based violations and 43 monitoring/reporting issues for Mayes Co RWD # 9 in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 1
- Unresolved
- 1
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 43
Key facts
- Mayes Co RWD # 9 draws water from 1 surface water intake.
- Most recent formal enforcement: compliance order (no penalty) by EPA, March 2026.
- Record on file since 1992, with 21 health-based violations before October 19, 2016.
Check whether Mayes Co RWD # 9 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 |
Active
Enforcement action in place
|
No |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jun 1, 2022 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2025 | Active |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Nov 1, 2024 | Resolved |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 |
Active
Enforcement action in place
|
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 2, 2022 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Dec 1, 2020 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Aug 1, 2020 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jun 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2016 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2016 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
Full record since 1992
EPA's records for Mayes Co RWD # 9 go back to 1992. Before October 19, 2016 they list 21 health-based violations (21 resolved) and 78 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 31 |
| 2000s | 21 | 11 |
| 2010 to October 18, 2016 | 0 | 36 |
| October 19, 2016 to 2019 | 0 | 4 |
| 2020s | 2 | 16 |
Most recent health-based violation before October 19, 2016: Haloacetic Acids (HAA5), began January 2009, Resolved.
Show all 21 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.063 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
Jan 1, 2009 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.089 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jan 1, 2009 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.062 mg/L, federal limit 0.06 mg/L (at or just above the limit)
|
Apr 1, 2006 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.072 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
Jan 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jan 1, 2006 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Oct 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Oct 1, 2005 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Jul 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jul 1, 2005 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jul 1, 2005 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Apr 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Apr 1, 2005 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Apr 1, 2005 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jan 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jan 1, 2005 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Jan 1, 2005 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Oct 1, 2004 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Oct 1, 2004 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Oct 1, 2004 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jul 1, 2004 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Jul 1, 2004 | Resolved |
Enforcement actions
Oklahoma regulators and EPA took 14 formal enforcement actions against Mayes Co RWD # 9 between 2001 and 2026, filed as 17 records in EPA's data. The most recent was a compliance order (no penalty) in March 2026.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 5, 2026 | EPA | Compliance order (no penalty) | 2 violations (1 health-based): LEAD AND COPPER RULE REVISIONS |
| Sep 29, 2022 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Interim Enhanced Surface Water Treatment Rule |
| May 29, 2009 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Apr 2, 2009 | Oklahoma | Compliance order with a penalty | 1 violation: Arsenic |
| Aug 7, 2007 | Oklahoma | Compliance order with a penalty | 1 violation: Nitrate-Nitrite |
| Oct 3, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Haloacetic Acids (HAA5) |
| Sep 20, 2006 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Apr 7, 2006 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Jan 27, 2006 | Oklahoma | Compliance order with a penalty | 6 violations (6 health-based): CARBON, TOTAL, Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Sep 20, 2005 | Oklahoma | Compliance order with a penalty | 5 violations (3 health-based): CARBON, TOTAL, Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Apr 7, 2005 | Oklahoma | Compliance order with a penalty | 3 violations (3 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5), CARBON, TOTAL |
| Jan 14, 2005 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Feb 4, 2002 | Oklahoma | Compliance order with a penalty | 20 violations: 1,2,4-Trichlorobenzene, cis-1,2-Dichloroethylene, Xylenes, Total, o-Dichlorobenzene, p-Dichlorobenzene |
| Jul 30, 2001 | Oklahoma | Compliance order with a penalty | 2 violations: Lead and Copper Rule |
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.
Interim Enhanced Surface Water Treatment Rule
1 incidentThe system did not meet a filtration or treatment requirement for surface water
Inadequate treatment of surface water can let pathogens such as Cryptosporidium and Giardia through
Where the water comes from
Mayes Co RWD # 9 draws water from 1 surface water intake.
Annual water quality report
Mayes Co RWD # 9 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