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Public water system record

Midwest City

Serves Midwest City, Oklahoma County, OK · 55,935 people served

Federal records show no health-based violations and 9 monitoring/reporting issues for Midwest City in the last ten years. At least one of these issues remains unresolved.

  • OK1020806
  • MIDWEST CITY
  • OK
  • 55,935 served

System profile

Source water Surface water
ZIP 73110
EPA system ID OK1020806

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
9

Key facts

  • Midwest City draws water from 21 wells and 1 surface water intake (4 of them for emergency, seasonal or other part-time use).
  • Most recent formal enforcement: compliance order with a penalty by Oklahoma, March 2015.
  • Record on file since 1994, with 11 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 15,392 unknown out of 21,540 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.

None since October 2016.

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
E. coli
Monitoring and reporting
 Aug 22, 2024 Active
CARBON, TOTAL
Monitoring and reporting
 Jun 1, 2024 Resolved
CARBON, TOTAL
Monitoring and reporting
 Jun 1, 2024 Resolved
CARBON, TOTAL
Monitoring and reporting
 Apr 1, 2024 Resolved
CARBON, TOTAL
Monitoring and reporting
 Apr 1, 2024 Resolved
CARBON, TOTAL
Monitoring and reporting
 Apr 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
CARBON, TOTAL
Monitoring and reporting
 Apr 1, 2024 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Nitrate-Nitrite
Monitoring and reporting
 Jan 1, 2024 Resolved
Nitrate-Nitrite
Monitoring and reporting
 Jan 1, 2024 Resolved

Full record since 1994

EPA's records for Midwest City go back to 1994. Before October 19, 2016 they list 11 health-based violations (11 resolved) and 9 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 3
2000s 9 6
2010 to October 18, 2016 2 0
2020s 0 9

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

Show all 11 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above 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
CARBON, TOTAL
Treatment technique failure
 Oct 1, 2004 Resolved
CARBON, TOTAL
Treatment technique failure
 Jul 1, 2004 Resolved
CARBON, TOTAL
Treatment technique failure
 Apr 1, 2004 Resolved
CARBON, TOTAL
Treatment technique failure
 Jan 1, 2004 Resolved
CARBON, TOTAL
Treatment technique failure
 Oct 1, 2003 Resolved
CARBON, TOTAL
Treatment technique failure
 Jul 1, 2003 Resolved
CARBON, TOTAL
Treatment technique failure
 Apr 1, 2003 Resolved
CARBON, TOTAL
Treatment technique failure
 Jan 1, 2003 Resolved
CARBON, TOTAL
Treatment technique failure
 Oct 1, 2002 Resolved

Enforcement actions

Oklahoma regulators took 13 formal enforcement actions against Midwest City between 2003 and 2015. The most recent was a compliance order with a penalty in March 2015.

Date By Action Violations covered
Mar 16, 2015 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Nov 14, 2014 Oklahoma Compliance order with a penalty 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
Sep 16, 2008 Oklahoma Compliance order with a penalty 6 violations: Simazine, Glyphosate, Diquat
Mar 3, 2005 Oklahoma Compliance order with a penalty 1 violation (1 health-based): CARBON, TOTAL
Feb 9, 2005 Oklahoma Compliance order (no penalty) 9 violations (9 health-based): CARBON, TOTAL
Nov 16, 2004 Oklahoma Compliance order with a penalty 1 violation (1 health-based): CARBON, TOTAL
Sep 7, 2004 Oklahoma Compliance order with a penalty 1 violation (1 health-based): CARBON, TOTAL
May 25, 2004 Oklahoma Compliance order with a penalty 1 violation (1 health-based): CARBON, TOTAL
Feb 24, 2004 Oklahoma Compliance order with a penalty 1 violation (1 health-based): CARBON, TOTAL
Nov 13, 2003 Oklahoma Compliance order with a penalty 1 violation (1 health-based): CARBON, TOTAL
Aug 12, 2003 Oklahoma Compliance order with a penalty 1 violation (1 health-based): CARBON, TOTAL
May 8, 2003 Oklahoma Compliance order with a penalty 1 violation (1 health-based): CARBON, TOTAL
Feb 5, 2003 Oklahoma Compliance order with a penalty 1 violation (1 health-based): CARBON, TOTAL

Where the water comes from

Midwest City draws water from 21 wells and 1 surface water intake (4 of them for emergency, seasonal or other part-time use). 1 other community water system buys water from Midwest City.

Community systems that buy water from it

Annual water quality report

Midwest City 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 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.

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