Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OK1020806
PWS Name	MIDWEST CITY
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	55935
County Served	Oklahoma

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MR	Monitoring, Source Water (GWR)	Ground Water Rule	E. COLI	261374	Open	22-AUG-2024	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	261366	Returned to Compliance	01-JUN-2024	30-JUN-2024	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	261365	Returned to Compliance	01-JUN-2024	30-JUN-2024	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	261355	Known	01-APR-2024	30-JUN-2024	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	261362	Returned to Compliance	01-APR-2024	30-JUN-2024	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	261356	Known	01-APR-2024	30-JUN-2024	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	261361	Returned to Compliance	01-APR-2024	30-JUN-2024	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	261388	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	261387	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	260624	Returned to Compliance	01-OCT-2014	31-DEC-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	260619	Returned to Compliance	01-JUL-2014	30-SEP-2014	Yes
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	260214	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Glyphosate	260211	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Glyphosate	260212	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	260209	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	260210	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	260213	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	248905	Returned to Compliance	01-OCT-2004	31-DEC-2004	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	248704	Returned to Compliance	01-JUL-2004	30-SEP-2004	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	248604	Returned to Compliance	01-APR-2004	30-JUN-2004	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	248504	Returned to Compliance	01-JAN-2004	31-MAR-2004	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	248404	Returned to Compliance	01-OCT-2003	31-DEC-2003	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	248303	Returned to Compliance	01-JUL-2003	30-SEP-2003	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	248203	Returned to Compliance	01-APR-2003	30-JUN-2003	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	248103	Returned to Compliance	01-JAN-2003	31-MAR-2003	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	248003	Returned to Compliance	01-OCT-2002	31-DEC-2002	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	86096	Returned to Compliance	01-SEP-1996	30-SEP-1996	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	247894	Returned to Compliance	01-JUL-1994	31-JUL-1994	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	62694	Returned to Compliance	01-MAR-1994	31-MAR-1994	No

1 - 29 of 29

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
1862	261361	SIF	State Public Notification received	19-SEP-2025	State	-
1863	261362	SIF	State Public Notification received	19-SEP-2025	State	-
1859	261365	SIF	State Public Notification received	19-SEP-2025	State	-
1859	261366	SIF	State Public Notification received	19-SEP-2025	State	-
1858	261374	SIF	State Public Notification received	19-SEP-2025	State	-
1861	261387	SIF	State Public Notification received	19-SEP-2025	State	-
1861	261388	SIF	State Public Notification received	19-SEP-2025	State	-
1821	86096	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
1820	247894	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
1819	62694	SOX	State Compliance achieved	26-JUL-2016	State	AUTOMATIC RETURN TO COMPLIANCE 7/26/2016 - Violations Should be Closed Out because PWS is in complaince.
1818	260624	SOX	State Compliance achieved	22-MAY-2015	State	-
1817	260619	SOX	State Compliance achieved	22-MAY-2015	State	-
1810	260210	SOX	State Compliance achieved	14-AUG-2009	State	3 ty 05 soc M R
1810	260209	SOX	State Compliance achieved	14-AUG-2009	State	3 ty 05 soc M R
1810	260214	SOX	State Compliance achieved	14-AUG-2009	State	3 ty 05 soc M R
1810	260213	SOX	State Compliance achieved	14-AUG-2009	State	3 ty 05 soc M R
1810	260212	SOX	State Compliance achieved	14-AUG-2009	State	3 ty 05 soc M R
1810	260211	SOX	State Compliance achieved	14-AUG-2009	State	3 ty 05 soc M R
1806	248103	SOX	State Compliance achieved	26-JAN-2006	State	Returned to compliance with TOC removal requirements.
1806	248203	SOX	State Compliance achieved	26-JAN-2006	State	Returned to compliance with TOC removal requirements.
1806	248905	SOX	State Compliance achieved	26-JAN-2006	State	Returned to compliance with TOC removal requirements.
1806	248704	SOX	State Compliance achieved	26-JAN-2006	State	Returned to compliance with TOC removal requirements.
1806	248604	SOX	State Compliance achieved	26-JAN-2006	State	Returned to compliance with TOC removal requirements.
1806	248504	SOX	State Compliance achieved	26-JAN-2006	State	Returned to compliance with TOC removal requirements.
1806	248003	SOX	State Compliance achieved	26-JAN-2006	State	Returned to compliance with TOC removal requirements.
1806	248303	SOX	State Compliance achieved	26-JAN-2006	State	Returned to compliance with TOC removal requirements.
1806	248404	SOX	State Compliance achieved	26-JAN-2006	State	Returned to compliance with TOC removal requirements.

1 - 27 of 27

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
THUNDERBIRD LK	15820	Yes	Intake	Surface water	Permanent	Active
WELL 51	11445	Yes	Well	Ground water	Permanent	Inactive
WELL 12	11439	Yes	Well	Ground water	Permanent	Inactive
WELL 13	11425	Yes	Well	Ground water	Permanent	Inactive
WELL 21	11420	Yes	Well	Ground water	Permanent	Inactive
WELL 19	11446	Yes	Well	Ground water	Permanent	Active
WELL 6	11442	Yes	Well	Ground water	Permanent	Active
WELL 48	11441	Yes	Well	Ground water	Permanent	Active
WELL 26	11440	Yes	Well	Ground water	Permanent	Active
WELL 18	11438	Yes	Well	Ground water	Permanent	Active
WELL 17	11437	Yes	Well	Ground water	Permanent	Active
WELL 15	11434	Yes	Well	Ground water	Permanent	Active
WELL 22	11433	Yes	Well	Ground water	Permanent	Active
WELL 25	11431	Yes	Well	Ground water	Permanent	Active
WELL 20	11427	Yes	Well	Ground water	Permanent	Active
WELL 27	11426	Yes	Well	Ground water	Permanent	Active
WELL 23	11424	Yes	Well	Ground water	Permanent	Active
WELL 50	11423	Yes	Well	Ground water	Permanent	Active
WELL 28	11418	Yes	Well	Ground water	Permanent	Active
WELL 24	11417	Yes	Well	Ground water	Permanent	Active
WELL 52	11414	Yes	Well	Ground water	Permanent	Active
WELL 49	11408	Yes	Well	Ground water	Permanent	Active
WELL 10	11450	Yes	Well	Ground water	Other	Inactive
WELL 31 ABANDON	11449	Yes	Well	Ground water	Other	Inactive
WELL 34 ABANDON	11448	Yes	Well	Ground water	Other	Inactive
WELL 42	11447	Yes	Well	Ground water	Other	Inactive
WELL 33 ABANDON	11444	Yes	Well	Ground water	Other	Inactive
WELL 38	11443	Yes	Well	Ground water	Other	Inactive
WELL 9	11435	Yes	Well	Ground water	Other	Inactive
WELL 30	11432	Yes	Well	Ground water	Other	Inactive
WELL 37	11430	Yes	Well	Ground water	Other	Inactive
WELL 4	11429	Yes	Well	Ground water	Other	Inactive
WELL 8	11428	Yes	Well	Ground water	Other	Inactive
WELL 40	11422	Yes	Well	Ground water	Other	Inactive
WELL 41 ABANDON	11421	Yes	Well	Ground water	Other	Inactive
WELL 14	11419	Yes	Well	Ground water	Other	Inactive
WELL 35	11416	Yes	Well	Ground water	Other	Inactive
WELL 44	11415	Yes	Well	Ground water	Other	Inactive
WELL 3	11413	Yes	Well	Ground water	Other	Inactive
WELL 11	11412	Yes	Well	Ground water	Other	Inactive
WELL 7	11411	Yes	Well	Ground water	Other	Inactive
WELL 39	11410	Yes	Well	Ground water	Other	Inactive
WELL 32	11409	Yes	Well	Ground water	Other	Inactive
WELL 2	11451	Yes	Well	Ground water	Interim	Inactive
WELL 16	11436	Yes	Well	Ground water	Interim	Active
WELL 53	20527	Yes	Well	Ground water	Emergency	Active
WELL 55	20526	Yes	Well	Ground water	Emergency	Active
WELL 54	20525	Yes	Well	Ground water	Emergency	Active
DISTRIBUTION SYSTEM	17296	No	Distribution System/Zone	-	-	Active
INTAKE RAW WATER PUMP STATION	30703	No	Pump Facility	-	-	Active

1 - 50 of 73

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
MIDWEST CITY WELL WTP	10922	Hypochlorination, Post	Disinfection
MIDWEST CITY (THUNDERBIRD) WTP	10923	Gaseous Chlorination, Post	Disinfection
MIDWEST CITY (THUNDERBIRD) WTP	10923	Coagulation	Particulate removal
MIDWEST CITY (THUNDERBIRD) WTP	10923	Sedimentation	Particulate removal
MIDWEST CITY (THUNDERBIRD) WTP	10923	pH Adjustment	Corrosion control
MIDWEST CITY (THUNDERBIRD) WTP	10923	Filtration, Rapid Sand	Particulate removal
MIDWEST CITY (THUNDERBIRD) WTP	10923	Chlorine Dioxide	Disinfection by-products control
MIDWEST CITY (THUNDERBIRD) WTP	10923	Fluoridation	Other
CL2 STATION WELL 49	20584	Hypochlorination, Post	Disinfection
CL2 STATION WELL 52	20585	Hypochlorination, Post	Disinfection
CL2 STATION WELL 28	20586	Hypochlorination, Post	Disinfection
CL2 STATION WELL 50	20588	Hypochlorination, Post	Disinfection
CL2 STATION WELL 48	20589	Hypochlorination, Post	Disinfection
CL2 STATION WELL 51	20590	Hypochlorination, Post	Disinfection
CL2 STATION WELL 6	24620	Hypochlorination, Post	Disinfection
CL2 STATION WELL 53	24621	Hypochlorination, Post	Disinfection
CL2 STATION WELL 54	24623	Hypochlorination, Post	Disinfection
CL2 STATION WELL 55	24624	Hypochlorination, Post	Disinfection
CL2 STATION WELL 27	24625	Hypochlorination, Post	Disinfection

1 - 19 of 19

For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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