Public water system record

McCurtain Co. RWD #9

Serves an area of McCurtain County, OK · 999 people served

Federal records show 17 health-based violations and 7 monitoring/reporting issues for McCurtain Co. RWD #9 in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.

OK3004820
VALLIANT
OK
999 served

System profile

Source water Purchased surface water

ZIP 74764

EPA system ID OK3004820

Verify this system on EPA ECHO →

Health-based violations, last 10 years: 17
Resolved: 16
Unresolved: 1
Any acute record: No
Monitoring issues, last 10 years: 7

Key facts

McCurtain Co. RWD #9 buys its water from Broken Bow PWA.
Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 0.075 mg/L, federal limit 0.06 mg/L (1.3 times the limit), 2021.
Most recent formal enforcement: compliance order (no penalty) by EPA, March 2026.
Record on file since 2004, with 4 health-based violations before October 19, 2016.

Check whether McCurtain Co. RWD #9 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
LEAD AND COPPER RULE REVISIONS Treatment technique failure	350	Oct 17, 2024	Active Enforcement action in place	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.094 mg/L, federal limit 0.08 mg/L (1.2 times the limit)	220	Apr 1, 2021	Resolved	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.089 mg/L, federal limit 0.08 mg/L (1.1 times the limit)	220	Apr 1, 2021	Resolved	No
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.075 mg/L, federal limit 0.06 mg/L (1.3 times the limit)	220	Apr 1, 2021	Resolved	No
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.074 mg/L, federal limit 0.06 mg/L (1.2 times the limit)	220	Apr 1, 2021	Resolved	No
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.075 mg/L, federal limit 0.06 mg/L (1.3 times the limit)	220	Jan 1, 2021	Resolved	No
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.073 mg/L, federal limit 0.06 mg/L (1.2 times the limit)	220	Jan 1, 2021	Resolved	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)	220	Jan 1, 2021	Resolved	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.089 mg/L, federal limit 0.08 mg/L (1.1 times the limit)	220	Jan 1, 2021	Resolved	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)	220	Oct 1, 2020	Resolved	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.09 mg/L, federal limit 0.08 mg/L (1.1 times the limit)	220	Oct 1, 2020	Resolved	No
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.075 mg/L, federal limit 0.06 mg/L (1.3 times the limit)	220	Oct 1, 2020	Resolved	No
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.074 mg/L, federal limit 0.06 mg/L (1.2 times the limit)	220	Oct 1, 2020	Resolved	No
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.093 mg/L, federal limit 0.08 mg/L (1.2 times the limit)	220	Jul 1, 2020	Resolved	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	Resolved	No
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.071 mg/L, federal limit 0.06 mg/L (1.2 times the limit)	220	Jul 1, 2020	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	Jul 1, 2020	Resolved	No

Monitoring and reporting issues

Since October 2016

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

Issue	Start date	Status
Consumer Confidence Rule OTHER	Jul 1, 2025	Active
LEAD AND COPPER RULE REVISIONS RPT	Oct 17, 2024	Active Enforcement action in place
Consumer Confidence Rule OTHER	Jul 1, 2024	Resolved
Haloacetic Acids (HAA5) Monitoring and reporting	Apr 1, 2021	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Apr 1, 2021	Resolved
Haloacetic Acids (HAA5) Monitoring and reporting	Dec 30, 2020	Resolved
Total Trihalomethanes (TTHMs) Monitoring and reporting	Dec 30, 2020	Resolved

Full record since 2004

EPA's records for McCurtain Co. RWD #9 go back to 2004. Before October 19, 2016 they list 4 health-based violations (4 resolved) and 6 monitoring or reporting violations.

Violations that began in	Health-based	Monitoring and reporting
2000s	0	1
2010 to October 18, 2016	4	5
2020s	17	7

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began July 2014, Resolved.

Show all 4 health-based violations before October 19, 2016

Contaminant	Start date	Status
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)	Jul 1, 2014	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.088 mg/L, federal limit 0.08 mg/L (1.1 times the limit)	Apr 1, 2014	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.096 mg/L, federal limit 0.08 mg/L (1.2 times the limit)	Jan 1, 2014	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)	Oct 1, 2013	Resolved

Enforcement actions

Oklahoma regulators and EPA took 8 formal enforcement actions against McCurtain Co. RWD #9 between 2012 and 2026. The most recent was a compliance order (no penalty) in March 2026.

Date	By	Action	Violations covered
Mar 17, 2026	EPA	Compliance order (no penalty)	2 violations (1 health-based): LEAD AND COPPER RULE REVISIONS
Nov 5, 2021	Oklahoma	Compliance order (no penalty)	4 violations (4 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs)
Aug 25, 2021	Oklahoma	Compliance order (no penalty)	4 violations (4 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)
Mar 12, 2021	Oklahoma	Compliance order (no penalty)	4 violations (4 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)
Dec 8, 2020	Oklahoma	Compliance order (no penalty)	4 violations (4 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs)
Nov 14, 2014	Oklahoma	Compliance order with a penalty	2 violations (2 health-based): Total Trihalomethanes (TTHMs)
Jun 18, 2014	Oklahoma	Compliance order with a penalty	2 violations (2 health-based): Total Trihalomethanes (TTHMs)
Nov 19, 2012	Oklahoma	Compliance order with a penalty	3 violations: Consumer Confidence Rule

What the violations mean

Total Trihalomethanes (TTHMs)

8 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Haloacetic Acids (HAA5)

8 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

McCurtain Co. RWD #9 buys its water from Broken Bow PWA. It lists no wells or intakes of its own.

Buys water from

Broken Bow PWA Broken Bow, OK

Annual water quality report

McCurtain 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