Clean Water Act discharge permit · NPDES OK0037893
SHAWNEE MUNICIPAL AUTH- NORTH, Shawnee, OK: NPDES OK0037893 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 58Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
SHAWNEE MUNICIPAL AUTH- NORTH, held by Shawnee Municipal Authority-North, holds NPDES permit OK0037893, which discharges to 520510000110 North Canadian R. EPA’s file records it issued September 27, 2012 and expiring September 30, 2017. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SHAWNEE MUNICIPAL AUTH- NORTH |
|---|---|
| Permittee as filed | Shawnee Municipal Authority-North |
| NPDES ID | OK0037893 |
| 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 | September 27, 2012 |
| Expiration date | September 30, 2017 |
| Issuing agency | ODEQ |
| Address | Shawnee, OK 74802 |
| Receiving water | 520510000110 North Canadian R |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Rock Creek-North Canadian River (HUC 111003020302) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 58Pollutants on file
- 58Under a numeric limit
- 48With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 13 | 17 | 8 | October 31, 2024 | 136% over the limit |
| Solids, total suspended | 3 | 17 | 5 | February 28, 2026 | 64% over the limit |
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 9 | 3 | December 31, 2013 | 47% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 9 | 3 | October 31, 2024 | 115% over the limit |
| Chlorine, total residual | 1 | 3 | 2 | May 31, 2022 | 20,112% over the limit |
| Arsenic, dry weight | 5 | 13 | 1 | December 31, 2017 | 2% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 6 | 1 | February 28, 2026 | 9% over the limit |
| Lead, total [as Pb] | 3 | 13 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 5 | 12 | 0 | ||
| Cadmium, total [as Cd] | 3 | 12 | 0 | ||
| pH | 8 | 9 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 7 | 0 | ||
| Selenium, dry weight | 3 | 6 | 0 | ||
| Copper, dry weight | 3 | 6 | 0 | ||
| Cadmium, dry weight | 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 | ||
| LC50 Static Renewal 48Hr Acute Pimephales promelas | 3 | 4 | 0 | ||
| % Mortality Static Renewal 48 Hr Pimephales promelas or use TJA6C | 3 | 4 | 0 | ||
| %Mortality Static Renewal 7Day Chronic Pimephales Promelas | 3 | 4 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 3 | 4 | 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 | 1 | 3 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 3 | 2 | 0 | ||
| LC50 Static Renewal 48Hr Acute Pimephales promelas | 3 | 2 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 3 | 2 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 3 | 2 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 3 | 2 | 0 | ||
| Coliform, fecal general | 2 | 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 | ||
| Whole effluent toxicity - retest #1 | 6 | 1 | 0 | ||
| Whole effluent toxicity - retest #2 | 6 | 1 | 0 | ||
| LC50 Static Renewal 48Hr Acute Daphnia pulex | 3 | 0 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 3 | 0 | 0 | ||
| LC50 Pass/Fail Static Renewal 48Hr Acute Daphnia Pulex | 3 | 0 | 0 | ||
| %Mortality Static Renewal 48Hr Acute Daphnia Pulex | 3 | 0 | 0 | ||
| %Mortality 7Day Chronic Ceriodaphnia dubia | 3 | 0 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 3 | 0 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 3 | 0 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 3 | 0 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 3 | 0 | 0 | ||
| Annual whole sludge application rate | 1 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 7, 2026 | Effluent Violations - Unapproved Bypass | ST6 |
| January 7, 2021 | Biosolids: Other Management Practice Violation | ST6 |
| February 13, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
| December 7, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
| April 17, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.