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Public water system record

Pittsburg Co. RWD #9 (McAlester)

Serves an area of Pittsburg County, OK · 872 people served

Federal records show 8 health-based violations and 6 monitoring/reporting issues for Pittsburg Co. RWD #9 (McAlester) in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.

  • OK3006107
  • MCALESTER
  • OK
  • 872 served

System profile

Source water Purchased surface water
ZIP 74501
EPA system ID OK3006107

Verify this system on EPA ECHO →

Health-based violations, last 10 years
8
Resolved
6
Unresolved
1
Archived by EPA
1
Any acute record
No
Monitoring issues, last 10 years
6

Key facts

  • Pittsburg Co. RWD #9 (McAlester) buys its water from McAlester PWA.
  • Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 0.072 mg/L, federal limit 0.06 mg/L (1.2 times the limit), 2017.
  • Most recent formal enforcement: compliance order (no penalty) by Oklahoma, August 2022.
  • Record on file since 2005, with 7 health-based violations before October 19, 2016.

Check whether Pittsburg Co. RWD #9 (McAlester) serves your address

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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 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Oct 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
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, 2022 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.065 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
 220 Jan 1, 2018 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.066 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
 220 Oct 1, 2017 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.068 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
 220 Jul 1, 2017 Resolved 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 Apr 1, 2017 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.072 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 220 Apr 1, 2017 Resolved No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Haloacetic Acids (HAA5)
Monitoring and reporting
 Sep 29, 2025 Resolved
LEAD AND COPPER RULE REVISIONS
RPT
 Oct 17, 2024 Active
Haloacetic Acids (HAA5)
Monitoring and reporting
 Dec 30, 2022 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Sep 29, 2020 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Apr 1, 2019 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Dec 30, 2017 Resolved

Full record since 2005

EPA's records for Pittsburg Co. RWD #9 (McAlester) go back to 2005. Before October 19, 2016 they list 7 health-based violations (7 resolved) and 13 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2000s 1 10
2010 to October 18, 2016 6 3
October 19, 2016 to 2019 5 2
2020s 3 4

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began January 2015, Resolved.

Show all 7 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)
 Jan 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.097 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Oct 1, 2014 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.102 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Jul 1, 2014 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.11 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 Apr 1, 2014 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.114 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 Jan 1, 2014 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.121 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 Oct 1, 2013 Resolved
Total Coliform
Contaminant limit exceeded
 Jul 1, 2005 Resolved

Enforcement actions

Oklahoma regulators took 9 formal enforcement actions against Pittsburg Co. RWD #9 (McAlester) between 2014 and 2022. The most recent was a compliance order (no penalty) in August 2022.

Date By Action Violations covered
Aug 29, 2022 Oklahoma Compliance order (no penalty) 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
May 3, 2018 Oklahoma Compliance order (no penalty) 2 violations (2 health-based): Haloacetic Acids (HAA5)
Sep 22, 2017 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Haloacetic Acids (HAA5)
Jul 28, 2017 Oklahoma Compliance order with a penalty 2 violations (2 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs)
May 1, 2015 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Feb 19, 2015 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Dec 2, 2014 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Aug 15, 2014 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
May 7, 2014 Oklahoma Compliance order with a penalty 2 violations (2 health-based): Total Trihalomethanes (TTHMs)

What the violations mean

Haloacetic Acids (HAA5)

4 incidents

Haloacetic acid byproducts exceeded the federal limit

Long-term exposure to HAAs may increase cancer risk

Total Trihalomethanes (TTHMs)

3 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

Pittsburg Co. RWD #9 (McAlester) buys its water from McAlester PWA. It lists no wells or intakes of its own.

Buys water from

Annual water quality report

Pittsburg Co. RWD #9 (McAlester) 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