Public water system record

McIntosh Co. RWS & SWMD #2 (Onapa)

Serves an area of McIntosh County, OK that includes Texanna · 2,774 people served

Federal records show 50 health-based violations and 8 monitoring/reporting issues for McIntosh Co. RWS & SWMD #2 (Onapa) in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.

OK1020535
CHECOTAH
OK
2,774 served

System profile

Source water Surface water

ZIP 74426

EPA system ID OK1020535

Verify this system on EPA ECHO →

Health-based violations, last 10 years: 50
Resolved: 0
Unresolved: 1
Archived by EPA: 49
Any acute record: No
Monitoring issues, last 10 years: 8

Key facts

McIntosh Co. RWS & SWMD #2 (Onapa) draws water from 1 surface water intake.
Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.112 mg/L, federal limit 0.08 mg/L (1.4 times the limit), 2025.
Most recent formal enforcement: compliance order with a penalty by Oklahoma, October 2025.
Record on file since 2003, with 68 health-based violations before October 19, 2016.

Check whether McIntosh Co. RWS & SWMD #2 (Onapa) 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 0.112 mg/L, federal limit 0.08 mg/L (1.4 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 0.081 mg/L, federal limit 0.08 mg/L (at or just above 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
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.063 mg/L, federal limit 0.06 mg/L (1.1 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 0.099 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 0.102 mg/L, federal limit 0.08 mg/L (1.3 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
CARBON, TOTAL Treatment technique failure	210	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	Active	No
CARBON, TOTAL Treatment technique failure	210	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 0.091 mg/L, federal limit 0.08 mg/L (1.1 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
CARBON, TOTAL Treatment technique failure	210	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 0.092 mg/L, federal limit 0.08 mg/L (1.2 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
CARBON, TOTAL Treatment technique failure	210	Apr 1, 2024	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
CARBON, TOTAL Treatment technique failure	210	Jan 1, 2024	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
CARBON, TOTAL Treatment technique failure	210	Oct 1, 2023	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
CARBON, TOTAL Treatment technique failure	210	Jul 1, 2023	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
CARBON, TOTAL Treatment technique failure	210	Apr 1, 2023	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
CARBON, TOTAL Treatment technique failure	210	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 0.082 mg/L, federal limit 0.08 mg/L (at or just above 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
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.063 mg/L, federal limit 0.06 mg/L (1.1 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
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.062 mg/L, federal limit 0.06 mg/L (at or just above 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 0.082 mg/L, federal limit 0.08 mg/L (at or just above 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 0.09 mg/L, federal limit 0.08 mg/L (1.1 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
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.061 mg/L, federal limit 0.06 mg/L (at or just above 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 0.091 mg/L, federal limit 0.08 mg/L (1.1 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 0.084 mg/L, federal limit 0.08 mg/L (1.1 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 0.087 mg/L, federal limit 0.08 mg/L (1.1 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 0.091 mg/L, federal limit 0.08 mg/L (1.1 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 0.083 mg/L, federal limit 0.08 mg/L (at or just above 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 0.085 mg/L, federal limit 0.08 mg/L (1.1 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 0.096 mg/L, federal limit 0.08 mg/L (1.2 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 0.09 mg/L, federal limit 0.08 mg/L (1.1 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 0.109 mg/L, federal limit 0.08 mg/L (1.4 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 0.086 mg/L, federal limit 0.08 mg/L (1.1 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 0.1 mg/L, federal limit 0.08 mg/L (1.3 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 0.089 mg/L, federal limit 0.08 mg/L (1.1 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 0.107 mg/L, federal limit 0.08 mg/L (1.3 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 0.103 mg/L, federal limit 0.08 mg/L (1.3 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 0.085 mg/L, federal limit 0.08 mg/L (1.1 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 0.088 mg/L, federal limit 0.08 mg/L (1.1 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 0.091 mg/L, federal limit 0.08 mg/L (1.1 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 0.089 mg/L, federal limit 0.08 mg/L (1.1 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 0.091 mg/L, federal limit 0.08 mg/L (1.1 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 0.081 mg/L, federal limit 0.08 mg/L (at or just above 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 0.093 mg/L, federal limit 0.08 mg/L (1.2 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 0.094 mg/L, federal limit 0.08 mg/L (1.2 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 0.095 mg/L, federal limit 0.08 mg/L (1.2 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
CARBON, TOTAL Treatment technique failure	210	Apr 1, 2017	Archived Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.	No
CARBON, TOTAL Treatment technique failure	210	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 0.093 mg/L, federal limit 0.08 mg/L (1.2 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 0.091 mg/L, federal limit 0.08 mg/L (1.1 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
LEAD AND COPPER RULE REVISIONS RPT	Oct 17, 2024	Active
Haloacetic Acids (HAA5) Monitoring and reporting	Jun 30, 2022	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Dec 30, 2020	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Sep 29, 2020	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Jun 30, 2020	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Mar 31, 2020	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Dec 30, 2019	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Jun 30, 2018	Resolved

Full record since 2003

EPA's records for McIntosh Co. RWS & SWMD #2 (Onapa) go back to 2003. Before October 19, 2016 they list 68 health-based violations (58 resolved, 10 archived by EPA without a recorded fix) and 11 monitoring or reporting violations.

Violations that began in	Health-based	Monitoring and reporting
2000s	42	8
2010 to October 18, 2016	26	3
October 19, 2016 to 2019	17	2
2020s	32	6

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

Show all 68 health-based violations before October 19, 2016

Contaminant	Start date	Status
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.091 mg/L, federal limit 0.08 mg/L (1.1 times the limit)	Oct 1, 2016	Archived
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)	Jul 1, 2016	Archived
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)	Apr 1, 2016	Archived
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)	Jul 1, 2015	Archived
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.089 mg/L, federal limit 0.08 mg/L (1.1 times the limit)	Apr 1, 2015	Archived
Interim Enhanced Surface Water Treatment Rule (acute) Treatment technique failure	Apr 1, 2015	Resolved
CARBON, TOTAL Treatment technique failure	Jan 1, 2015	Archived
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.101 mg/L, federal limit 0.08 mg/L (1.3 times the limit)	Jan 1, 2015	Archived
CARBON, TOTAL Treatment technique failure	Oct 1, 2014	Archived
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.111 mg/L, federal limit 0.08 mg/L (1.4 times the limit)	Oct 1, 2014	Archived
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.105 mg/L, federal limit 0.08 mg/L (1.3 times the limit)	Jul 1, 2014	Archived
Interim Enhanced Surface Water Treatment Rule (acute) Treatment technique failure	Jun 1, 2014	Resolved
Interim Enhanced Surface Water Treatment Rule (acute) Treatment technique failure	Sep 1, 2012	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.097 mg/L, federal limit 0.08 mg/L (1.2 times the limit)	Jul 1, 2012	Resolved
Interim Enhanced Surface Water Treatment Rule (acute) Treatment technique failure	May 1, 2012	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.111 mg/L, federal limit 0.08 mg/L (1.4 times the limit)	Apr 1, 2012	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.119 mg/L, federal limit 0.08 mg/L (1.5 times the limit)	Jan 1, 2012	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.123 mg/L, federal limit 0.08 mg/L (1.5 times the limit)	Oct 1, 2011	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.133 mg/L, federal limit 0.08 mg/L (1.7 times the limit)	Jul 1, 2011	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.136 mg/L, federal limit 0.08 mg/L (1.7 times the limit)	Apr 1, 2011	Resolved
Interim Enhanced Surface Water Treatment Rule (acute) Treatment technique failure	Feb 1, 2011	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.147 mg/L, federal limit 0.08 mg/L (1.8 times the limit)	Jan 1, 2011	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.15 mg/L, federal limit 0.08 mg/L (1.9 times the limit)	Oct 1, 2010	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.139 mg/L, federal limit 0.08 mg/L (1.7 times the limit)	Jul 1, 2010	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.136 mg/L, federal limit 0.08 mg/L (1.7 times the limit)	Apr 1, 2010	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.126 mg/L, federal limit 0.08 mg/L (1.6 times the limit)	Jan 1, 2010	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.124 mg/L, federal limit 0.08 mg/L (1.6 times the limit)	Oct 1, 2009	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.123 mg/L, federal limit 0.08 mg/L (1.5 times the limit)	Jul 1, 2009	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.127 mg/L, federal limit 0.08 mg/L (1.6 times the limit)	Apr 1, 2009	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.13 mg/L, federal limit 0.08 mg/L (1.6 times the limit)	Jan 1, 2009	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.13 mg/L, federal limit 0.08 mg/L (1.6 times the limit)	Oct 1, 2008	Resolved
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.074 mg/L, federal limit 0.06 mg/L (1.2 times the limit)	Jul 1, 2008	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.14 mg/L, federal limit 0.08 mg/L (1.8 times the limit)	Jul 1, 2008	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.121 mg/L, federal limit 0.08 mg/L (1.5 times the limit)	Apr 1, 2008	Resolved
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.077 mg/L, federal limit 0.06 mg/L (1.3 times the limit)	Apr 1, 2008	Resolved
Interim Enhanced Surface Water Treatment Rule (acute) Treatment technique failure	Feb 1, 2008	Resolved
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.08 mg/L, federal limit 0.06 mg/L (1.3 times the limit)	Jan 1, 2008	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.135 mg/L, federal limit 0.08 mg/L (1.7 times the limit)	Jan 1, 2008	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.128 mg/L, federal limit 0.08 mg/L (1.6 times the limit)	Oct 1, 2007	Resolved
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.08 mg/L, federal limit 0.06 mg/L (1.3 times the limit)	Oct 1, 2007	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.113 mg/L, federal limit 0.08 mg/L (1.4 times the limit)	Jul 1, 2007	Resolved
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.066 mg/L, federal limit 0.06 mg/L (1.1 times the limit)	Jul 1, 2007	Resolved
CARBON, TOTAL Treatment technique failure	Apr 1, 2007	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.161 mg/L, federal limit 0.08 mg/L (2 times the limit)	Apr 1, 2007	Resolved
CARBON, TOTAL Treatment technique failure	Jan 1, 2007	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.142 mg/L, federal limit 0.08 mg/L (1.8 times the limit)	Jan 1, 2007	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.158 mg/L, federal limit 0.08 mg/L (2 times the limit)	Oct 1, 2006	Resolved
CARBON, TOTAL Treatment technique failure	Oct 1, 2006	Resolved
CARBON, TOTAL Treatment technique failure	Jul 1, 2006	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.153 mg/L, federal limit 0.08 mg/L (1.9 times the limit)	Jul 1, 2006	Resolved

18 older violations are not listed here. EPA ECHO has the complete list.

Enforcement actions

Oklahoma regulators took 26 formal enforcement actions against McIntosh Co. RWS & SWMD #2 (Onapa) between 2005 and 2025, filed as 29 records in EPA's data. The most recent was a compliance order with a penalty in October 2025.

Date	By	Action	Violations covered
Oct 22, 2025	Oklahoma	Compliance order with a penalty	36 violations (36 health-based): Total Trihalomethanes (TTHMs), CARBON, TOTAL
Dec 21, 2021	Oklahoma	Compliance order with a penalty	58 violations (58 health-based): Total Trihalomethanes (TTHMs), CARBON, TOTAL, Haloacetic Acids (HAA5)
Dec 8, 2015	Oklahoma	Compliance order with a penalty	1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Sep 11, 2015	Oklahoma	Compliance order with a penalty	1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Jun 30, 2015	Oklahoma	Compliance order with a penalty	1 violation (1 health-based): Interim Enhanced Surface Water Treatment Rule
Jun 12, 2015	Oklahoma	Compliance order with a penalty	2 violations (2 health-based): Total Trihalomethanes (TTHMs), CARBON, TOTAL
Mar 16, 2015	Oklahoma	Compliance order with a penalty	2 violations (2 health-based): Total Trihalomethanes (TTHMs), CARBON, TOTAL
Nov 14, 2014	Oklahoma	Compliance order with a penalty	1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Sep 10, 2014	Oklahoma	Compliance order with a penalty	1 violation (1 health-based): Interim Enhanced Surface Water Treatment Rule
Dec 17, 2012	Oklahoma	Compliance order with a penalty	1 violation (1 health-based): Interim Enhanced Surface Water Treatment Rule
Sep 25, 2012	Oklahoma	Compliance order with a penalty	1 violation (1 health-based): Interim Enhanced Surface Water Treatment Rule
Jul 29, 2011	Oklahoma	Compliance order with a penalty	1 violation (1 health-based): Interim Enhanced Surface Water Treatment Rule
Apr 26, 2010	Oklahoma	Compliance order with a penalty	43 violations (42 health-based): Total Trihalomethanes (TTHMs), CARBON, TOTAL, Haloacetic Acids (HAA5)
Jun 19, 2008	Oklahoma	Compliance order with a penalty	1 violation (1 health-based): Interim Enhanced Surface Water Treatment Rule
Dec 14, 2007	Oklahoma	Compliance order with a penalty	2 violations (2 health-based): CARBON, TOTAL, Total Trihalomethanes (TTHMs)
May 24, 2007	Oklahoma	Compliance order with a penalty	2 violations (2 health-based): Total Trihalomethanes (TTHMs), CARBON, TOTAL
Feb 7, 2007	Oklahoma	Compliance order with a penalty	2 violations (2 health-based): CARBON, TOTAL, Total Trihalomethanes (TTHMs)
Nov 8, 2006	Oklahoma	Compliance order with a penalty	2 violations (2 health-based): CARBON, TOTAL, Total Trihalomethanes (TTHMs)
Sep 28, 2006	Oklahoma	Compliance order (no penalty)	53 violations (52 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5), CARBON, TOTAL
Sep 26, 2006	Oklahoma	Compliance order with a penalty	2 violations (2 health-based): CARBON, TOTAL, Total Trihalomethanes (TTHMs)
Sep 7, 2006	Oklahoma	Compliance order with a penalty	2 violations (2 health-based): CARBON, TOTAL, Total Trihalomethanes (TTHMs)
Apr 13, 2006	Oklahoma	Compliance order with a penalty	2 violations (2 health-based): Total Trihalomethanes (TTHMs), CARBON, TOTAL
Jan 26, 2006	Oklahoma	Compliance order with a penalty	4 violations (4 health-based): CARBON, TOTAL, Total Trihalomethanes (TTHMs)
Sep 20, 2005	Oklahoma	Compliance order with a penalty	4 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 11, 2005	Oklahoma	Compliance order with a penalty	2 violations (2 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)

What the violations mean

Total Trihalomethanes (TTHMs)

34 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

CARBON, TOTAL

11 incidents

The system did not complete a treatment step or action that federal rules require for CARBON, TOTAL (a treatment technique violation).

The utility had to notify customers about each of these violations.

Haloacetic Acids (HAA5)

4 incidents

Haloacetic acid byproducts exceeded the federal limit

Long-term exposure to HAAs may increase 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

McIntosh Co. RWS & SWMD #2 (Onapa) draws water from 1 surface water intake.

Annual water quality report

McIntosh Co. RWS & SWMD #2 (Onapa) 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