Public water system record

Seminole Co. RWD #2

Serves an area of Seminole County, OK · 315 people served

Federal records show 37 health-based violations and 13 monitoring/reporting issues for Seminole Co. RWD #2 in the last ten years. The most serious issue in this window was a Total Trihalomethanes (TTHMs) violation that EPA lists as archived, not resolved.

OK3006701
WEWOKA
OK
315 served

System profile

Source water Purchased surface water

ZIP 74884

EPA system ID OK3006701

Verify this system on EPA ECHO →

Health-based violations, last 10 years: 37
Resolved: 1
Unresolved: 0
Archived by EPA: 36
Any acute record: No
Monitoring issues, last 10 years: 13

Key facts

Seminole Co. RWD #2 buys its water from Wewoka Public Works Authority.
Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.167 mg/L, federal limit 0.08 mg/L (2.1 times the limit), 2017.
Most recent formal enforcement: compliance order with a penalty by Oklahoma, January 2024.
Record on file since 2005, with 12 health-based violations before October 19, 2016.

Check whether Seminole Co. RWD #2 serves your address

Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant	Rule family	Start date	Status	Acute
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)	220	Jul 1, 2025	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.096 mg/L, federal limit 0.08 mg/L (1.2 times the limit)	220	Apr 1, 2025	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.114 mg/L, federal limit 0.08 mg/L (1.4 times the limit)	220	Jan 1, 2025	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
LEAD AND COPPER RULE REVISIONS Treatment technique failure	350	Oct 17, 2024	Resolved	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.116 mg/L, federal limit 0.08 mg/L (1.5 times the limit)	220	Oct 1, 2024	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.116 mg/L, federal limit 0.08 mg/L (1.5 times the limit)	220	Jul 1, 2024	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.121 mg/L, federal limit 0.08 mg/L (1.5 times the limit)	220	Apr 1, 2024	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)	220	Jan 1, 2024	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.123 mg/L, federal limit 0.08 mg/L (1.5 times the limit)	220	Oct 1, 2023	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.119 mg/L, federal limit 0.08 mg/L (1.5 times the limit)	220	Jul 1, 2023	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.127 mg/L, federal limit 0.08 mg/L (1.6 times the limit)	220	Apr 1, 2023	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.135 mg/L, federal limit 0.08 mg/L (1.7 times the limit)	220	Jan 1, 2023	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.119 mg/L, federal limit 0.08 mg/L (1.5 times the limit)	220	Oct 1, 2022	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.131 mg/L, federal limit 0.08 mg/L (1.6 times the limit)	220	Jul 1, 2022	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.133 mg/L, federal limit 0.08 mg/L (1.7 times the limit)	220	Apr 1, 2022	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.15 mg/L, federal limit 0.08 mg/L (1.9 times the limit)	220	Jan 1, 2022	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.147 mg/L, federal limit 0.08 mg/L (1.8 times the limit)	220	Oct 1, 2021	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.137 mg/L, federal limit 0.08 mg/L (1.7 times the limit)	220	Jul 1, 2021	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.137 mg/L, federal limit 0.08 mg/L (1.7 times the limit)	220	Apr 1, 2021	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.145 mg/L, federal limit 0.08 mg/L (1.8 times the limit)	220	Jan 1, 2021	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.152 mg/L, federal limit 0.08 mg/L (1.9 times the limit)	220	Oct 1, 2020	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.156 mg/L, federal limit 0.08 mg/L (2 times the limit)	220	Jul 1, 2020	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.157 mg/L, federal limit 0.08 mg/L (2 times the limit)	220	Apr 1, 2020	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.149 mg/L, federal limit 0.08 mg/L (1.9 times the limit)	220	Jan 1, 2020	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.151 mg/L, federal limit 0.08 mg/L (1.9 times the limit)	220	Oct 1, 2019	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.146 mg/L, federal limit 0.08 mg/L (1.8 times the limit)	220	Jul 1, 2019	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.145 mg/L, federal limit 0.08 mg/L (1.8 times the limit)	220	Apr 1, 2019	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.136 mg/L, federal limit 0.08 mg/L (1.7 times the limit)	220	Jan 1, 2019	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.134 mg/L, federal limit 0.08 mg/L (1.7 times the limit)	220	Oct 1, 2018	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.137 mg/L, federal limit 0.08 mg/L (1.7 times the limit)	220	Jul 1, 2018	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.134 mg/L, federal limit 0.08 mg/L (1.7 times the limit)	220	Apr 1, 2018	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.135 mg/L, federal limit 0.08 mg/L (1.7 times the limit)	220	Jan 1, 2018	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.125 mg/L, federal limit 0.08 mg/L (1.6 times the limit)	220	Oct 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.122 mg/L, federal limit 0.08 mg/L (1.5 times the limit)	220	Jul 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.15 mg/L, federal limit 0.08 mg/L (1.9 times the limit)	220	Apr 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.167 mg/L, federal limit 0.08 mg/L (2.1 times the limit)	220	Jan 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.161 mg/L, federal limit 0.08 mg/L (2 times the limit)	220	Oct 1, 2016	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue	Start date	Status
Total Trihalomethanes (TTHMs) Monitoring and reporting	Jun 30, 2025	Resolved
LEAD AND COPPER RULE REVISIONS RPT	Oct 17, 2024	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Sep 29, 2024	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Sep 29, 2023	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Dec 30, 2022	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Sep 29, 2022	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Apr 1, 2022	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Dec 30, 2021	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Sep 29, 2021	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Apr 1, 2021	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Jun 30, 2018	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Dec 30, 2017	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Sep 29, 2017	Resolved

Full record since 2005

EPA's records for Seminole Co. RWD #2 go back to 2005. Before October 19, 2016 they list 12 health-based violations (1 resolved, 11 archived by EPA without a recorded fix) and 3 monitoring or reporting violations.

Violations that began in	Health-based	Monitoring and reporting
2000s	1	0
2010 to October 18, 2016	11	3
October 19, 2016 to 2019	12	3
2020s	24	10

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began October 2016, Archived.

Show all 12 health-based violations before October 19, 2016

Contaminant	Start date	Status
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.161 mg/L, federal limit 0.08 mg/L (2 times the limit)	Oct 1, 2016	Archived
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.175 mg/L, federal limit 0.08 mg/L (2.2 times the limit)	Jul 1, 2016	Archived
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.077 mg/L, federal limit 0.06 mg/L (1.3 times the limit)	Jul 1, 2016	Archived
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.174 mg/L, federal limit 0.08 mg/L (2.2 times the limit)	Apr 1, 2016	Archived
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.115 mg/L, federal limit 0.06 mg/L (1.9 times the limit)	Apr 1, 2016	Archived
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.209 mg/L, federal limit 0.08 mg/L (2.6 times the limit)	Jan 1, 2016	Archived
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.133 mg/L, federal limit 0.06 mg/L (2.2 times the limit)	Jan 1, 2016	Archived
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.192 mg/L, federal limit 0.08 mg/L (2.4 times the limit)	Oct 1, 2015	Archived
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.122 mg/L, federal limit 0.06 mg/L (2 times the limit)	Oct 1, 2015	Archived
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.183 mg/L, federal limit 0.08 mg/L (2.3 times the limit)	Jul 1, 2015	Archived
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.099 mg/L, federal limit 0.06 mg/L (1.7 times the limit)	Jul 1, 2015	Archived
Total Coliform Contaminant limit exceeded	Jul 1, 2005	Resolved

Enforcement actions

Oklahoma regulators took 4 formal enforcement actions against Seminole Co. RWD #2 between 2015 and 2024. The most recent was a compliance order with a penalty in January 2024.

Date	By	Action	Violations covered
Jan 23, 2024	Oklahoma	Compliance order with a penalty	46 violations (46 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)
Aug 15, 2016	Oklahoma	Compliance order with a penalty	38 violations (38 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)
Mar 15, 2016	Oklahoma	Compliance order with a penalty	2 violations (2 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)
Dec 11, 2015	Oklahoma	Compliance order with a penalty	2 violations (2 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)

What the violations mean

Total Trihalomethanes (TTHMs)

36 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

LEAD AND COPPER RULE REVISIONS

1 incident

The 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

Seminole Co. RWD #2 buys its water from Wewoka Public Works Authority. It lists no wells or intakes of its own.

Buys water from

Wewoka Public Works Authority Wewoka, OK

Annual water quality report

Seminole Co. RWD #2 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.

Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Seminole Co. RWD #2 for a copy.

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