Public water system record

Kay County Rural Water District 7

Serves an area of Kay County, OK that includes Nardin · 920 people served

Federal records show 3 health-based violations and no monitoring/reporting issues for Kay County Rural Water District 7 in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • OK3003601
  • BLACKWELL
  • OK
  • 920 served

System profile

Source water Purchased surface water
ZIP 74631
EPA system ID OK3003601

Verify this system on EPA ECHO →

Health-based violations, last 10 years
3
Resolved
3
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
0

Key facts

  • Kay County Rural Water District 7 buys its water from Blackwell Municipal Authority and Kay Electric Cooperative.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit), 2023.
  • Most recent formal enforcement: compliance order (no penalty) by Oklahoma, November 2023.
  • Record on file since 1991, with 16 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 550 service lines.

Check whether Kay County Rural Water District 7 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 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
220 Jul 1, 2023 Resolved 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, 2023 Resolved 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 Oct 1, 2022 Resolved No

Full record since 1991

EPA's records for Kay County Rural Water District 7 go back to 1991. Before October 19, 2016 they list 16 health-based violations (16 resolved) and 5 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 3
2000s 7 1
2010 to October 18, 2016 9 1
2020s 3 0

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

Show all 16 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.093 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
Apr 1, 2015 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, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.131 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
Oct 1, 2014 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.16 mg/L, federal limit 0.08 mg/L (2 times the limit)
Jul 1, 2014 Resolved
Total Coliform (acute)
Contaminant limit exceeded
Jul 1, 2013 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
Apr 1, 2011 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.089 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
Jan 1, 2011 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, 2010 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.094 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
Jul 1, 2010 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
Apr 1, 2009 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.098 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
Jan 1, 2009 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.099 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
Oct 1, 2008 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.119 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
Jul 1, 2008 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.109 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
Apr 1, 2008 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.109 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
Jan 1, 2008 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.112 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
Jul 1, 2007 Resolved

Enforcement actions

Oklahoma regulators took 18 formal enforcement actions against Kay County Rural Water District 7 and issued 1 boil water order between 1997 and 2023. The most recent was a compliance order (no penalty) in November 2023.

Date By Action Violations covered
Nov 15, 2023 Oklahoma Compliance order (no penalty) 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Aug 21, 2023 Oklahoma Compliance order (no penalty) 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Feb 3, 2023 Oklahoma Compliance order (no penalty) 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Aug 26, 2015 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Apr 28, 2015 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Jan 30, 2015 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Nov 12, 2014 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Jul 9, 2013 Oklahoma Boil water order 1 violation (1 health-based): Total Coliform
Jul 28, 2011 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
May 3, 2011 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Jan 26, 2011 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Nov 8, 2010 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Aug 14, 2009 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
May 29, 2009 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Feb 10, 2009 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Nov 20, 2008 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Oct 2, 2008 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Jun 9, 2008 Oklahoma Compliance order with a penalty 2 violations (2 health-based): Total Trihalomethanes (TTHMs)
Nov 7, 1997 Oklahoma Compliance order (no penalty) 1 violation: Lead and Copper Rule

What the violations mean

Total Trihalomethanes (TTHMs)

3 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Where the water comes from

Kay County Rural Water District 7 buys its water from Blackwell Municipal Authority and Kay Electric Cooperative. It lists no wells or intakes of its own. 1 other community water system buys water from Kay County Rural Water District 7.

Buys water from

Community systems that buy water from it

Annual water quality report

Kay County Rural Water District 7 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.