Clean Water Act discharge permit · NPDES OK0028134
OKMULGEE, CITY OF, Okmulgee, OK: NPDES OK0028134 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 51Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
- 1Inspections on file
- 2Formal enforcement actions
OKMULGEE, CITY OF, held by Okmulgee, City of, holds NPDES permit OK0028134, which discharges to 520700010290_00 Okmulgee Creek. EPA’s file records it issued February 27, 2012 and expiring February 28, 2017.
OKMULGEE, CITY OF, Okmulgee, Oklahoma: Individual permit OK0028134, held by Okmulgee, City of; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued February 27, 2012, term to February 28, 2017, by ODEQ; discharges to 520700010290_00 Okmulgee Creek.
- Coliform, fecal general: 2 limits, 36 violations of any kind, 34 effluent exceedances, latest May 31, 2017, largest 27,733% over the limit.
- Solids, total suspended: 9 limits, 55 violations of any kind, 25 effluent exceedances, latest May 31, 2015, largest 388% over the limit.
- BOD, carbonaceous [5 day, 20 C]: 9 limits, 46 violations of any kind, 22 effluent exceedances, latest December 31, 2022, largest 208% over the limit.
- pH: 4 limits, 49 violations of any kind, 21 effluent exceedances, latest January 31, 2025.
- Nitrogen, ammonia total [as N]: 12 limits, 59 violations of any kind, 11 effluent exceedances, latest March 31, 2004, largest 163% over the limit.
- E. coli: 0 limits, 10 violations of any kind, 10 effluent exceedances, latest May 31, 2026, largest 496% over the limit.
- Oxygen, dissolved [DO]: 2 limits, 16 violations of any kind, 8 effluent exceedances, latest July 31, 2014, largest 30% over the limit.
- Cadmium, total [as Cd]: 3 limits, 45 violations of any kind, 0 effluent exceedances.
- Lead, total [as Pb]: 3 limits, 45 violations of any kind, 0 effluent exceedances.
- Chromium, total [as Cr]: 2 limits, 28 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 2 limits, 16 violations of any kind, 0 effluent exceedances.
- Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia: 1 limit, 15 violations of any kind, 0 effluent exceedances.
- Coef Of Var Static Renewal 7Day Chronic Pimephales promelas: 1 limit, 15 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia: 1 limit, 13 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas: 1 limit, 13 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 1 limit, 13 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas: 1 limit, 13 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 1 limit, 13 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 1 limit, 13 violations of any kind, 0 effluent exceedances.
- Arsenic, dry weight: 5 limits, 12 violations of any kind, 0 effluent exceedances.
- Nickel, sludge, total, dry weight [as Ni]: 5 limits, 12 violations of any kind, 0 effluent exceedances.
- Oxygen demand, chem. [high level] [COD]: 0 limits, 12 violations of any kind, 0 effluent exceedances.
- Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia: 1 limit, 7 violations of any kind, 0 effluent exceedances.
- Pass/Fail Static Renewal 7Day Chronic Pimephales promelas: 1 limit, 7 violations of any kind, 0 effluent exceedances.
- %Mortality 7Day Chronic Ceriodaphnia dubia: 1 limit, 7 violations of any kind, 0 effluent exceedances.
- %Mortality Static Renewal 7Day Chronic Pimephales Promelas: 1 limit, 7 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.
- Chromium, sludge, total, dry weight [as Cr]: 2 limits, 6 violations of any kind, 0 effluent exceedances.
- Level of pathogen requirements achieved: 2 limits, 5 violations of any kind, 0 effluent exceedances.
- Description of pathogen option used: 2 limits, 5 violations of any kind, 0 effluent exceedances.
- Vector attraction reduction alternative used: 2 limits, 5 violations of any kind, 0 effluent exceedances.
- Polychlorinated biphenyls [PCBs]: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Unit w/liner/leachate collection system: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Unit boundary to property line distance: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Compliance w/part 258 sludge requirement: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Solids, total dissolved- 180 deg. C: 0 limits, 3 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.
- Chromium, hexavalent [as Cr]: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #1: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #2: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Annual whole sludge application rate: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- October 26, 2026: Letter of Violation/ Warning Letter (State).
- September 30, 2026: Evaluation (S).
- September 4, 2026: State CWA Non Penalty AO (State).
- July 1, 2026: State CWA Non Penalty AO (State).
- April 2, 2026: Biosolids: Other Management Practice Violation (ST6).
- April 2, 2026: Management Practice Violations - Improper Operation and Maintenance (ST6).
- February 7, 2024: Effluent Violations - Unapproved Bypass (ST6).
- January 27, 2024: Effluent Violations - Unapproved Bypass (ST6).
- November 6, 2023: Effluent Violations - Unapproved Bypass (ST6).
- May 22, 2023: Effluent Violations - Unapproved Bypass (ST6).
- March 24, 2023: Effluent Violations - Unapproved Bypass (ST6).
- November 3, 2022: Management Practice Violations - Improper Operation and Maintenance (ST6).
- September 15, 2022: Effluent Violations - Unapproved Bypass (ST6).
- September 9, 2022: Permit Violations - Unapproved Operation (ST6).
- May 13, 2022: Effluent Violations - Unapproved Bypass (ST6).
- May 5, 2022: Effluent Violations - Unapproved Bypass (ST6).
- February 7, 2022: Effluent Violations - Unapproved Bypass (ST6).
- July 15, 2021: Effluent Violations - Unapproved Bypass (ST6).
- July 3, 2021: Effluent Violations - Unapproved Bypass (ST6).
- March 19, 2020: Effluent Violations - Unapproved Bypass (ST6).
- March 14, 2020: Effluent Violations - Unapproved Bypass (ST6).
- February 19, 2020: Effluent Violations - Unapproved Bypass (ST6).
- November 15, 2018: Permit Violations - Violation Specified in Comment (ST6).
- November 29, 2017: Permit Violations - Violation Specified in Comment (ST6).
- October 23, 2017: Permit Violations - Violation Specified in Comment (ST6).
- May 20, 2017: Effluent Violations - Unapproved Bypass (ST6).
- April 27, 2017: Effluent Violations - Unapproved Bypass (ST6).
- April 22, 2017: Effluent Violations - Unapproved Bypass (ST6).
- March 23, 2017: Permit Violations - Violation Specified in Comment (ST6).
Oklahoma holds 197 Publicly owned treatment works coverages of this permit type in EPA’s file; 22 were issued before OK0028134.
Coverages issued nearest OK0028134
- November 3, 2010: U.S. FOREST SERVICE-CEDAR LAKE, Heavener, OK0031828, held by US Forest Service- Cedar Lake
- July 14, 2011: COWETA PWA, Coweta, OK0020281, held by Coweta PWA
- July 29, 2011: HYDRO, TOWN OF, Hydro Division, OK0028185, held by Hydro, Town of
- August 25, 2011: THE COVES MASTER ASSOC., INC., Afton, OK0037869, held by Coves Master Association, Inc., The
- September 15, 2011: ARDMORE INDUSTRIAL AIR PARK WASTEWATER TREATMENT, Ardmore, OK0030422, held by Ardmore, City of (Ind Air Park)
- April 12, 2012: CAMERON PWA, Cameron, OK0028908, held by Cameron PWA
- August 10, 2012: DELAWARE, CITY OF, Delaware, OK0020796, held by Delaware, City of
- September 27, 2012: SHAWNEE MUNICIPAL AUTH- NORTH, Shawnee, OK0037893, held by Shawnee Municipal Authority-North
- January 24, 2013: SENECA-CAYUGA TRIBE, Miami, OK0039098, held by Seneca-Cayuga Tribe
- March 12, 2013: CANDIAN PUBLIC WORKS AUTH, Canadian, OK0035297, held by Canadian PWA
OKMULGEE, CITY OF among its neighbors
EPA’s permit file holds 5 discharge permits in the Okmulgee Creek subwatershed (HUC 111003030906), OK0028134 among them. Its county holds 12, 3 of them major permits; OK0028134 is a major permit.
Other permits in the Okmulgee Creek subwatershed (HUC 111003030906)
- LOVE'S TRAVEL STOP NO. 675, Okmulgee: OK0100536, minor permit, discharging to 520700010290_00 Okmulgee Creek, permit term to April 30, 2022
- MUSKOGEE NATION STREET WIDENING FAIRGROUNDS RD., Okmulgee: OKR10I044, minor permit, permit term to February 16, 2027
- OKMULGEE MS4, Okmulgee: OKR040036, minor permit, discharging to Canadian River, Deep Fork, permit term to October 31, 2020
- OKMULGEE READY MIX CONCRETE CO, Okmulgee: OKG110024, minor permit, discharging to 520700 OKMULGEE CREEK, permit term to June 22, 2008
Identity
| Facility as filed | OKMULGEE, CITY OF |
|---|---|
| Permittee as filed | Okmulgee, City of |
| NPDES ID | OK0028134 |
| 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 | February 27, 2012 |
| Expiration date | February 28, 2017 |
| Issuing agency | ODEQ |
| Address | Okmulgee, OK 74447 |
| Receiving water | 520700010290_00 Okmulgee Creek |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Okmulgee Creek (HUC 111003030906) |
Effluent limits and exceedances
- 55Pollutants on file
- 51Under a numeric limit
- 52With a violation of any kind
- 7With 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 |
|---|---|---|---|---|---|
| Coliform, fecal general | 2 | 36 | 34 | May 31, 2017 | 27,733% over the limit |
| Solids, total suspended | 9 | 55 | 25 | May 31, 2015 | 388% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 9 | 46 | 22 | December 31, 2022 | 208% over the limit |
| pH | 4 | 49 | 21 | January 31, 2025 | |
| Nitrogen, ammonia total [as N] | 12 | 59 | 11 | March 31, 2004 | 163% over the limit |
| E. coli | 0 | 10 | 10 | May 31, 2026 | 496% over the limit |
| Oxygen, dissolved [DO] | 2 | 16 | 8 | July 31, 2014 | 30% over the limit |
| Cadmium, total [as Cd] | 3 | 45 | 0 | ||
| Lead, total [as Pb] | 3 | 45 | 0 | ||
| Chromium, total [as Cr] | 2 | 28 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 16 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 15 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 1 | 15 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 13 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 1 | 13 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 13 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 1 | 13 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 13 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 1 | 13 | 0 | ||
| Arsenic, dry weight | 5 | 12 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 5 | 12 | 0 | ||
| Oxygen demand, chem. [high level] [COD] | 0 | 12 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 7 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 1 | 7 | 0 | ||
| %Mortality 7Day Chronic Ceriodaphnia dubia | 1 | 7 | 0 | ||
| %Mortality Static Renewal 7Day Chronic Pimephales Promelas | 1 | 7 | 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 | ||
| Chromium, sludge, total, dry weight [as Cr] | 2 | 6 | 0 | ||
| Level of pathogen requirements achieved | 2 | 5 | 0 | ||
| Description of pathogen option used | 2 | 5 | 0 | ||
| Vector attraction reduction alternative used | 2 | 5 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 3 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 3 | 0 | ||
| Unit boundary to property line distance | 1 | 3 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 3 | 0 | ||
| Solids, total dissolved- 180 deg. C | 0 | 3 | 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 | ||
| Chromium, hexavalent [as Cr] | 0 | 2 | 0 | ||
| Whole effluent toxicity - retest #1 | 1 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 1 | 0 | 0 | ||
| Annual whole sludge application rate | 1 | 0 | 0 |
Inspections, violations and enforcement
- 25Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 2, 2026 | Biosolids: Other Management Practice Violation | ST6 |
| April 2, 2026 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| February 7, 2024 | Effluent Violations - Unapproved Bypass | ST6 |
| January 27, 2024 | Effluent Violations - Unapproved Bypass | ST6 |
| November 6, 2023 | Effluent Violations - Unapproved Bypass | ST6 |
| May 22, 2023 | Effluent Violations - Unapproved Bypass | ST6 |
| March 24, 2023 | Effluent Violations - Unapproved Bypass | ST6 |
| November 3, 2022 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| September 15, 2022 | Effluent Violations - Unapproved Bypass | ST6 |
| September 9, 2022 | Permit Violations - Unapproved Operation | ST6 |
| May 13, 2022 | Effluent Violations - Unapproved Bypass | ST6 |
| May 5, 2022 | Effluent Violations - Unapproved Bypass | ST6 |
| February 7, 2022 | Effluent Violations - Unapproved Bypass | ST6 |
| July 15, 2021 | Effluent Violations - Unapproved Bypass | ST6 |
| July 3, 2021 | Effluent Violations - Unapproved Bypass | ST6 |
| March 19, 2020 | Effluent Violations - Unapproved Bypass | ST6 |
| March 14, 2020 | Effluent Violations - Unapproved Bypass | ST6 |
| February 19, 2020 | Effluent Violations - Unapproved Bypass | ST6 |
| November 15, 2018 | Permit Violations - Violation Specified in Comment | ST6 |
| November 29, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
| October 23, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
| May 20, 2017 | Effluent Violations - Unapproved Bypass | ST6 |
| April 27, 2017 | Effluent Violations - Unapproved Bypass | ST6 |
| April 22, 2017 | Effluent Violations - Unapproved Bypass | ST6 |
| March 23, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| September 30, 2026 | Evaluation | 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 |
|---|---|---|---|---|
| September 4, 2026 | State CWA Non Penalty AO | State | ||
| July 1, 2026 | State CWA Non Penalty AO | State |
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| October 26, 2026 | Letter of Violation/ Warning Letter | State |
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.