Public water system record

West Davis RWD

On record as serving Murray County, OK · Serves 500 people

Federal records show 46 health-based violations and 1 monitoring/reporting issue for West Davis RWD in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.

OK3005004
HENNEPIN
OK
500 served

System profile

Source water Purchased surface water

ZIP 73444

EPA system ID OK3005004

Verify this system on EPA ECHO →

Health-based violations, last 10 years: 46
Resolved: 0
Unresolved: 1
Archived by EPA: 45
Any acute record: No
Monitoring issues, last 10 years: 1

Key facts

West Davis RWD draws water from 2 wells.
Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.142 mg/L, federal limit 0.08 mg/L (1.8 times the limit), 2019.
Most recent formal enforcement: compliance order (no penalty) by EPA, March 2026.
Record on file since 2008, with 6 health-based violations before October 19, 2016.

Check whether West Davis RWD 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 0.083 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
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, 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 0.084 mg/L, federal limit 0.08 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 0.093 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 0.096 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 0.1 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
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.101 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
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 0.107 mg/L, federal limit 0.08 mg/L (1.3 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 0.105 mg/L, federal limit 0.08 mg/L (1.3 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 0.083 mg/L, federal limit 0.08 mg/L (at or just above 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 0.082 mg/L, federal limit 0.08 mg/L (at or just above 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 0.093 mg/L, federal limit 0.08 mg/L (1.2 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 0.097 mg/L, federal limit 0.08 mg/L (1.2 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 0.093 mg/L, federal limit 0.08 mg/L (1.2 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 0.096 mg/L, federal limit 0.08 mg/L (1.2 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 0.082 mg/L, federal limit 0.08 mg/L (at or just above 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 0.098 mg/L, federal limit 0.08 mg/L (1.2 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 0.089 mg/L, federal limit 0.08 mg/L (1.1 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 0.085 mg/L, federal limit 0.08 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
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, 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 0.091 mg/L, federal limit 0.08 mg/L (1.1 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 0.094 mg/L, federal limit 0.08 mg/L (1.2 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 0.083 mg/L, federal limit 0.08 mg/L (at or just above 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 0.087 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 0.105 mg/L, federal limit 0.08 mg/L (1.3 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 0.118 mg/L, federal limit 0.08 mg/L (1.5 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 0.11 mg/L, federal limit 0.08 mg/L (1.4 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 0.097 mg/L, federal limit 0.08 mg/L (1.2 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 0.12 mg/L, federal limit 0.08 mg/L (1.5 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 0.115 mg/L, federal limit 0.08 mg/L (1.4 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 0.142 mg/L, federal limit 0.08 mg/L (1.8 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 0.136 mg/L, federal limit 0.08 mg/L (1.7 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 0.095 mg/L, federal limit 0.08 mg/L (1.2 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 0.142 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 0.106 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 0.109 mg/L, federal limit 0.08 mg/L (1.4 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 0.132 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 0.116 mg/L, federal limit 0.08 mg/L (1.5 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 0.109 mg/L, federal limit 0.08 mg/L (1.4 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 0.117 mg/L, federal limit 0.08 mg/L (1.5 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 0.108 mg/L, federal limit 0.08 mg/L (1.4 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 0.102 mg/L, federal limit 0.08 mg/L (1.3 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 0.093 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

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 Enforcement action in place

Full record since 2008

EPA's records for West Davis RWD go back to 2008. Before October 19, 2016 they list 6 health-based violations (3 resolved, 3 archived by EPA without a recorded fix) and 2 monitoring or reporting violations.

Violations that began in	Health-based	Monitoring and reporting
2000s	0	1
2010 to October 18, 2016	6	1
October 19, 2016 to 2019	15	0
2020s	31	1

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

Show all 6 health-based violations before October 19, 2016

Contaminant	Start date	Status
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.09 mg/L, federal limit 0.08 mg/L (1.1 times the limit)	Jul 1, 2016	Archived
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.078 mg/L, federal limit 0.06 mg/L (1.3 times the limit)	Apr 1, 2016	Archived
Haloacetic Acids (HAA5) Contaminant limit exceeded Measured 0.101 mg/L, federal limit 0.06 mg/L (1.7 times the limit)	Jan 1, 2016	Archived
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.11 mg/L, federal limit 0.08 mg/L (1.4 times the limit)	Jan 1, 2015	Resolved
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	Resolved
Total Trihalomethanes (TTHMs) Contaminant limit exceeded Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)	Jul 1, 2014	Resolved

Enforcement actions

Oklahoma regulators and EPA took 8 formal enforcement actions against West Davis RWD between 2014 and 2026. The most recent was a compliance order (no penalty) in March 2026.

Date	By	Action	Violations covered
Mar 19, 2026	EPA	Compliance order (no penalty)	2 violations (1 health-based): LEAD AND COPPER RULE REVISIONS
Dec 10, 2020	Oklahoma	Compliance order with a penalty	52 violations (51 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs)
Dec 5, 2017	Oklahoma	Compliance order with a penalty	28 violations (27 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs)
Sep 11, 2017	Oklahoma	Compliance order with a penalty	1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Jun 20, 2017	Oklahoma	Compliance order with a penalty	1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Dec 22, 2016	Oklahoma	Compliance order with a penalty	3 violations (3 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs)
Mar 23, 2015	Oklahoma	Compliance order with a penalty	2 violations (2 health-based): Total Trihalomethanes (TTHMs)
Dec 5, 2014	Oklahoma	Compliance order with a penalty	1 violation (1 health-based): Total Trihalomethanes (TTHMs)

What the violations mean

Total Trihalomethanes (TTHMs)

45 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

West Davis RWD draws water from 2 wells. It also buys water from Davis. It also has an emergency connection to Western Carter Co Water Corp.

Buys water from

Davis Davis, OK

Emergency or part-time connections to

Western Carter Co Water Corp Ratliff City, OK

Annual water quality report

West Davis RWD 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 West Davis RWD 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