Clean Water Act discharge permit · NPDES OK0028100
CHECOTAH WWTP, Checotah, OK: NPDES OK0028100 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
CHECOTAH WWTP, held by Checotah PWA, holds NPDES permit OK0028100, which discharges to 120400 Elk Ck/Dirty Ck/Robert S Kerr. EPA’s file records it issued April 6, 2017 and expiring April 30, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CHECOTAH WWTP |
|---|---|
| Permittee as filed | Checotah PWA |
| NPDES ID | OK0028100 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 6, 2017 |
| Expiration date | April 30, 2022 |
| Issuing agency | ODEQ |
| Address | Checotah, OK 74426 |
| Receiving water | 120400 Elk Ck/Dirty Ck/Robert S Kerr |
| Subwatershed | Headwaters Elk Creek (HUC 111101020102) |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 36Pollutants on file
- 9Under a numeric limit
- 36With a violation of any kind
- 6With 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 | 0 | 22 | 18 | July 31, 2016 | 99,999% over the limit |
| E. coli | 2 | 11 | 11 | July 31, 2026 | 202% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 12 | 9 | April 30, 2026 | 3,927% over the limit |
| Nitrogen, ammonia total [as N] | 9 | 23 | 7 | June 30, 2024 | 128% over the limit |
| pH | 2 | 12 | 1 | May 31, 2024 | |
| Solids, total suspended | 6 | 9 | 1 | May 31, 2015 | 63% over the limit |
| Arsenic, dry weight | 0 | 7 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 0 | 6 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 5 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 0 | 5 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 5 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 0 | 5 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 5 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 0 | 5 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 4 | 0 | ||
| Zinc, total [as Zn] | 0 | 4 | 0 | ||
| Selenium, dry weight | 0 | 4 | 0 | ||
| Copper, dry weight | 0 | 4 | 0 | ||
| Cadmium, dry weight | 0 | 4 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 0 | 4 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 0 | 4 | 0 | ||
| BOD, 5-day, 20 deg. C | 3 | 3 | 0 | ||
| Whole effluent toxicity | 0 | 3 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 0 | 3 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 0 | 3 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 0 | 3 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 3 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 0 | 3 | 0 | ||
| %Mortality 7Day Chronic Ceriodaphnia dubia | 0 | 3 | 0 | ||
| %Mortality Static Renewal 7Day Chronic Pimephales Promelas | 0 | 3 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 0 | 3 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 0 | 3 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 2 | 0 | ||
| Sulfate, total [as SO4] | 1 | 2 | 0 | ||
| Whole effluent toxicity - retest #1 | 0 | 2 | 0 | ||
| Whole effluent toxicity - retest #2 | 0 | 2 | 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
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 6, 2019 | Effluent Violations - Unapproved Bypass | ST6 |
| April 11, 2019 | Effluent Violations - Unapproved Bypass | ST6 |
| January 4, 2019 | Effluent Violations - Unapproved Bypass | ST6 |
| May 3, 2018 | Effluent Violations - Unapproved Bypass | ST6 |
| April 6, 2018 | Effluent Violations - Unapproved Bypass | ST6 |
| February 25, 2018 | Effluent Violations - Unapproved Bypass | 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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Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.