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Public water system record

Canadian Co RWS & SWMD #5

Serves an area of Canadian County, OK that includes El Reno · 316 people served

Federal records show 7 health-based violations and 13 monitoring/reporting issues for Canadian Co RWS & SWMD #5 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.

  • OK3000901
  • EL RENO
  • OK
  • 316 served

System profile

Source water GUP
ZIP 73036
EPA system ID OK3000901

Verify this system on EPA ECHO →

Health-based violations, last 10 years
7
Resolved
1
Unresolved
0
Archived by EPA
6
Any acute record
No
Monitoring issues, last 10 years
13

Key facts

  • Canadian Co RWS & SWMD #5 buys its water from El Reno.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.099 mg/L, federal limit 0.08 mg/L (1.2 times the limit), 2023.
  • Most recent formal enforcement: compliance order with a penalty by Oklahoma, February 2024.
  • Record on file since 1994, with 1 health-based violation before October 19, 2016.
  • Lead pipe inventory: 0 lead and 166 unknown out of 296 service lines.

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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 0.088 mg/L, federal limit 0.08 mg/L (1.1 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 0.095 mg/L, federal limit 0.08 mg/L (1.2 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 0.092 mg/L, federal limit 0.08 mg/L (1.2 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 0.099 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 0.091 mg/L, federal limit 0.08 mg/L (1.1 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 0.084 mg/L, federal limit 0.08 mg/L (1.1 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 0.082 mg/L, federal limit 0.08 mg/L (at or just above 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
Haloacetic Acids (HAA5)
Monitoring and reporting
 Jan 1, 2025 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jan 1, 2025 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Jul 1, 2020 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jul 1, 2020 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Oct 1, 2019 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Oct 1, 2019 Resolved
Chlorine
Monitoring and reporting
 Oct 1, 2017 Resolved
Revised Total Coliform Rule
Monitoring violation
 Jan 1, 2017 Resolved
Chlorine
Monitoring and reporting
 Jan 1, 2017 Resolved
Lead and Copper Rule
Monitoring and reporting
 Jul 1, 2016 Resolved
Lead and Copper Rule
Monitoring and reporting
 Jan 1, 2016 Resolved
Lead and Copper Rule
Monitoring and reporting
 Jul 1, 2015 Resolved
Lead and Copper Rule
Monitoring and reporting
 Jan 1, 1994 Resolved

Full record since 1994

EPA's records for Canadian Co RWS & SWMD #5 go back to 1994. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 40 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 1
2000s 0 26
2010 to October 18, 2016 1 13
October 19, 2016 to 2019 0 5
2020s 7 4

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

Show the health-based violation 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)
 Apr 1, 2014 Resolved

Enforcement actions

Oklahoma regulators took 9 formal enforcement actions against Canadian Co RWS & SWMD #5 between 1994 and 2024. The most recent was a compliance order with a penalty in February 2024.

Date By Action Violations covered
Feb 27, 2024 Oklahoma Compliance order with a penalty 6 violations (6 health-based): Total Trihalomethanes (TTHMs)
Jan 4, 2024 Oklahoma Compliance order (no penalty) 2 violations (2 health-based): Total Trihalomethanes (TTHMs)
Sep 13, 2023 Oklahoma Compliance order (no penalty) 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
May 30, 2023 Oklahoma Compliance order (no penalty) 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Aug 27, 2014 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Sep 28, 2010 Oklahoma Compliance order with a penalty 8 violations: Total Coliform
Jun 10, 2008 Oklahoma Compliance order with a penalty 6 violations: Total Coliform
Jun 27, 2005 Oklahoma Compliance order with a penalty 8 violations: Total Coliform
Dec 1, 1994 Oklahoma Compliance order (no penalty) 1 violation: Lead and Copper Rule

What the violations mean

Total Trihalomethanes (TTHMs)

7 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Where the water comes from

Canadian Co RWS & SWMD #5 buys its water from El Reno. It lists no wells or intakes of its own.

Buys water from

Annual water quality report

Canadian Co RWS & SWMD #5 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 Canadian Co RWS & SWMD #5 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