Clean Water Act discharge permit · NPDES OK0026841
MIDWEST CITY, CITY OF - NORTH, Midwest City, OK: NPDES OK0026841 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 49Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
- 2Inspections on file
- 2Formal enforcement actions
MIDWEST CITY, CITY OF - NORTH, held by Midwest City, City of (Northside), holds NPDES permit OK0026841, which discharges to 520520000060_00 Crutcho Ck/ North Canadian River. EPA’s file records it issued April 15, 2015 and expiring April 30, 2020.
MIDWEST CITY, CITY OF - NORTH, Midwest City, Oklahoma: Individual permit OK0026841, held by Midwest City, City of (Northside); Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued April 15, 2015, term to April 30, 2020, by ODEQ; discharges to 520520000060_00 Crutcho Ck/ North Canadian River; Sewage Treatment Facilities.
- Nitrogen, ammonia total [as N]: 6 limits, 55 violations of any kind, 49 effluent exceedances, latest May 31, 2026, largest 154% over the limit.
- BOD, 5-day, 20 deg. C: 3 limits, 34 violations of any kind, 25 effluent exceedances, latest January 31, 2024, largest 122% over the limit.
- E. coli: 4 limits, 15 violations of any kind, 15 effluent exceedances, latest June 30, 2025, largest 496% over the limit.
- Whole effluent toxicity: 1 limit, 11 violations of any kind, 9 effluent exceedances, latest September 30, 2009, largest 100% over the limit.
- Chlorine, total residual: 0 limits, 10 violations of any kind, 7 effluent exceedances, latest April 30, 2008, largest 950% over the limit.
- Flow, in conduit or thru treatment plant: 3 limits, 10 violations of any kind, 2 effluent exceedances, latest March 31, 2018, largest 235,833% over the limit.
- Solids, total suspended: 3 limits, 10 violations of any kind, 1 effluent exceedance, latest June 30, 2000, largest 36% over the limit.
- Coliform, fecal general: 0 limits, 5 violations of any kind, 1 effluent exceedance, latest June 30, 2014, largest 18% over the limit.
- Diazinon: 0 limits, 12 violations of any kind, 0 effluent exceedances.
- Arsenic, dry weight: 5 limits, 8 violations of any kind, 0 effluent exceedances.
- Nickel, sludge, total, dry weight [as Ni]: 5 limits, 8 violations of any kind, 0 effluent exceedances.
- pH: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia: 1 limit, 8 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 1 limit, 8 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 1 limit, 8 violations of any kind, 0 effluent exceedances.
- Selenium, dry weight: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Copper, dry weight: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Cadmium, dry weight: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Molybdenum, sludge, total, dry weight [as Mo]: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Zinc, sludge, total, dry weight [as Zn]: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Lead, sludge, total, dry weight [as Pb]: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Mercury, sludge, total, dry weight [as Hg]: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Level of pathogen requirements achieved: 2 limits, 3 violations of any kind, 0 effluent exceedances.
- Description of pathogen option used: 2 limits, 3 violations of any kind, 0 effluent exceedances.
- Vector attraction reduction alternative used: 2 limits, 3 violations of any kind, 0 effluent exceedances.
- Lead, total [as Pb]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Chromium, sludge, total, dry weight [as Cr]: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Oxygen, dissolved [DO]: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Copper, total [as Cu]: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Polychlorinated biphenyls [PCBs]: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Toxicity characteristic leaching procedure: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Ann. amt sludge disposed by other method: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amt of sludge incinerated: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual sludge production, total: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amount of sludge land applied: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amt. sludge disposed surface unit: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amt sludge disposed in landfill: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amt sludge transported interstate: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Pollutant table from 503.13: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- %Mortality 7Day Chronic Ceriodaphnia dubia: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #2: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Annual whole sludge application rate: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Unit w/liner/leachate collection system: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Unit boundary to property line distance: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Pass/Fail Static Renewal 7Day Chronic Pimephales promelas: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- %Mortality Static Renewal 7Day Chronic Pimephales Promelas: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Coef Of Var Static Renewal 7Day Chronic Pimephales promelas: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #1: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Compliance w/part 258 sludge requirement: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Solids, total dissolved- 180 deg. C: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- August 12, 2026: Letter of Violation/ Warning Letter (State).
- June 18, 2026: State CWA Non Penalty AO (State).
- June 18, 2026: State CWA Non Penalty AO (State).
- April 15, 2026: Evaluation (S).
- March 16, 2026: Audit (S).
- December 31, 2025: Biosolids: Other Management Practice Violation (ST6).
- October 17, 2019: Management Practice Violations - Best Management Practice Deficiencies (ST6).
- October 17, 2019: Monitoring Violations - No Flow Measurement Device (ST6).
- October 17, 2019: Monitoring Violations - Improper Analysis or Lab Error (ST6).
- May 25, 2018: Permit Violations - Violation Specified in Comment (ST6).
- March 21, 2017: Permit Violations - Violation Specified in Comment (ST6).
Oklahoma holds 197 Publicly owned treatment works coverages of this permit type in EPA’s file; 40 were issued before OK0026841.
Coverages issued nearest OK0026841
- January 5, 2015: ADAIR, TOWN OF, Adair, OK0027197, held by Adair, Town of
- January 20, 2015: CLAREMORE, CITY OF, Claremore, OK0027049, held by Claremore, City of
- February 5, 2015: MEEKER, TOWN OF, Meeker, OK0026883, held by Meeker, Town of
- April 10, 2015: RALSTON, CITY OF, Ralston, OK0020761, held by Ralston, City of
- April 14, 2015: MIAMI, CITY OF-SOUTHEAST WTF, Miami, OK0031798, held by Miami WWTF-SE Plant
- May 11, 2015: EL RENO MUNICIPAL AUTHORITY, El Reno, OK0100382, held by El Reno Municipal Authority
- May 15, 2015: GUTHRIE, Guthrie, OK0027715, held by Guthrie PWA
- May 20, 2015: MCALESTER, CITY OF - WEST PLANT, Mcalester, OK0026093, held by McAlester City of (West Plant)
- December 7, 2015: NEWCASTLE PUBLIC WORKS AUTH., Newcastle, OK0028614, held by Newcastle PWA
- December 23, 2015: CHICKASHA MUNICIPAL AUTHORITY, Chickasha, OK0026018, held by Chickasha Municipal Authority
MIDWEST CITY, CITY OF - NORTH among its neighbors
EPA’s permit file holds 4 discharge permits in the Crutcho Creek subwatershed (HUC 111003020104), OK0026841 among them. Its county holds 30, 9 of them major permits; OK0026841 is a major permit.
Other permits in the Crutcho Creek subwatershed (HUC 111003020104)
- B9201 SOFTWARE INTEGRATION LAB TINKER AFB, Oklahoma City: OKR10F03A, minor permit, permit term to February 16, 2027
- TINKER AFB, Oklahoma City: OK0000809, major permit, discharging to 520520 unmd trib/ Soldier Ck, permit term to August 31, 2017
- TINKER AIR FORCE BASE, Oklahoma City: OK0035203, minor permit, discharging to 520520000090 unmd trib/Crutcho Ck, permit term to August 31, 2008
Identity
| Facility as filed | MIDWEST CITY, CITY OF - NORTH |
|---|---|
| Permittee as filed | Midwest City, City of (Northside) |
| NPDES ID | OK0026841 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 15, 2015 |
| Expiration date | April 30, 2020 |
| Issuing agency | ODEQ |
| Address | Midwest City, OK 73141 |
| Receiving water | 520520000060_00 Crutcho Ck/ North Canadian River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Crutcho Creek (HUC 111003020104) |
| Program components on file | Biosolids, POTW, Pretreatment |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 55Pollutants on file
- 49Under a numeric limit
- 53With a violation of any kind
- 8With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 6 | 55 | 49 | May 31, 2026 | 154% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 34 | 25 | January 31, 2024 | 122% over the limit |
| E. coli | 4 | 15 | 15 | June 30, 2025 | 496% over the limit |
| Whole effluent toxicity | 1 | 11 | 9 | September 30, 2009 | 100% over the limit |
| Chlorine, total residual | 0 | 10 | 7 | April 30, 2008 | 950% over the limit |
| Flow, in conduit or thru treatment plant | 3 | 10 | 2 | March 31, 2018 | 235,833% over the limit |
| Solids, total suspended | 3 | 10 | 1 | June 30, 2000 | 36% over the limit |
| Coliform, fecal general | 0 | 5 | 1 | June 30, 2014 | 18% over the limit |
| Diazinon | 0 | 12 | 0 | ||
| Arsenic, dry weight | 5 | 8 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 5 | 8 | 0 | ||
| pH | 4 | 8 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 8 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 8 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 8 | 0 | ||
| Selenium, dry weight | 3 | 6 | 0 | ||
| Copper, dry weight | 3 | 6 | 0 | ||
| Cadmium, dry weight | 3 | 6 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 6 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 6 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 6 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 6 | 0 | ||
| Level of pathogen requirements achieved | 2 | 3 | 0 | ||
| Description of pathogen option used | 2 | 3 | 0 | ||
| Vector attraction reduction alternative used | 2 | 3 | 0 | ||
| Lead, total [as Pb] | 0 | 3 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 2 | 2 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 2 | 0 | ||
| Copper, total [as Cu] | 1 | 2 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 2 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 2 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 2 | 0 | ||
| Annual amt of sludge incinerated | 1 | 2 | 0 | ||
| Annual sludge production, total | 1 | 2 | 0 | ||
| Annual amount of sludge land applied | 1 | 2 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 2 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 2 | 0 | ||
| Annual amt sludge transported interstate | 1 | 2 | 0 | ||
| Pollutant table from 503.13 | 1 | 2 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 2 | 0 | ||
| %Mortality 7Day Chronic Ceriodaphnia dubia | 1 | 2 | 0 | ||
| Whole effluent toxicity - retest #2 | 0 | 2 | 0 | ||
| Annual whole sludge application rate | 1 | 1 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 1 | 0 | ||
| Unit boundary to property line distance | 1 | 1 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 1 | 1 | 0 | ||
| %Mortality Static Renewal 7Day Chronic Pimephales Promelas | 1 | 1 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 1 | 1 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 1 | 1 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 1 | 1 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 1 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 1 | 1 | 0 | ||
| Whole effluent toxicity - retest #1 | 0 | 1 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 0 | 0 | ||
| Solids, total dissolved- 180 deg. C | 1 | 0 | 0 |
Inspections, violations and enforcement
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 31, 2025 | Biosolids: Other Management Practice Violation | ST6 |
| October 17, 2019 | Management Practice Violations - Best Management Practice Deficiencies | ST6 |
| October 17, 2019 | Monitoring Violations - No Flow Measurement Device | ST6 |
| October 17, 2019 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| May 25, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
| March 21, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| April 15, 2026 | Evaluation | S |
| March 16, 2026 | Audit | S |
Formal enforcement and penalties
2 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
| Date | What EPA recorded | Agency | Federal penalty | State or local penalty |
|---|---|---|---|---|
| June 18, 2026 | State CWA Non Penalty AO | State | ||
| June 18, 2026 | State CWA Non Penalty AO | State |
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| August 12, 2026 | Letter of Violation/ Warning Letter | State |
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.