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Clean Water Act discharge permit · NPDES OK0026093

MCALESTER, CITY OF - WEST PLANT, Mcalester, OK: NPDES OK0026093 discharge permit, effluent exceedances, inspections, penalties

MCALESTER, CITY OF - WEST PLANT, held by McAlester City of (West Plant), holds NPDES permit OK0026093, which discharges to 220600020093_00 Trib/Sandy Ck/Deer Ck. EPA’s file records it issued May 20, 2015 and expiring May 31, 2020. 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 filedMCALESTER, CITY OF - WEST PLANT
Permittee as filedMcAlester City of (West Plant)
NPDES IDOK0026093
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedMay 20, 2015
Expiration dateMay 31, 2020
Issuing agencyODEQ
AddressMcalester, OK 74502
Receiving water220600020093_00 trib/Sandy Ck/Deer Ck
SubwatershedDear Creek (HUC 110902040503)
Program components on fileBiosolids, POTW, Pretreatment
NAICS221320 – Sewage Treatment Facilities
SIC4952 – 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

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Nitrogen, ammonia total [as N]15123105December 31, 2025529% over the limit
Selenium, total [as Se]310599June 30, 20261,252% over the limit
Cyanide, total [as CN]36557July 31, 2026259% over the limit
Solids, total dissolved- 180 deg. C6189March 31, 202626% over the limit
BOD, carbonaceous [5 day, 20 C]6167April 30, 2006380% over the limit
Oxygen, dissolved [DO]275June 30, 202618% over the limit
pH4153December 31, 2025
Solids, total suspended693June 30, 200196% over the limit
Molybdenum, sludge, total, dry weight [as Mo]322December 31, 200193% over the limit
Gamma-BHC391June 30, 202420% over the limit
Flow, in conduit or thru treatment plant160
Pass/Fail Static Renewal 7Day Chronic Pimephales promelas150
%Mortality Static Renewal 7Day Chronic Pimephales Promelas150
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas150
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas150
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas150
Coef Of Var Static Renewal 7Day Chronic Pimephales promelas150
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia140
%Mortality 7Day Chronic Ceriodaphnia dubia140
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia140
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia140
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia140
Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia140
Arsenic, dry weight510
Nickel, sludge, total, dry weight [as Ni]510
Selenium, dry weight310
Copper, dry weight310
Cadmium, dry weight310
Zinc, sludge, total, dry weight [as Zn]310
Lead, sludge, total, dry weight [as Pb]310
Mercury, sludge, total, dry weight [as Hg]310
Ann. amt sludge disposed by other method110
Annual amt of sludge incinerated110
Annual amount of sludge land applied110
Annual amt. sludge disposed surface unit110
Annual amt sludge transported interstate110
Chromium, sludge, total, dry weight [as Cr]200
Level of pathogen requirements achieved200
Description of pathogen option used200
Vector attraction reduction alternative used200
Whole effluent toxicity - retest #1100
Whole effluent toxicity - retest #2100
Polychlorinated biphenyls [PCBs]100
Toxicity characteristic leaching procedure100
Annual whole sludge application rate100
Annual sludge production, total100
Annual amt sludge disposed in landfill100
Unit w/liner/leachate collection system100
Unit boundary to property line distance100
Compliance w/part 258 sludge requirement100
Pollutant table from 503.13100

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

DateWhat EPA recordedAgency
April 17, 2024Effluent Violations - Unapproved BypassST6
April 16, 2024Effluent Violations - Unapproved BypassST6
November 24, 2020Effluent Violations - Unapproved BypassST6
December 9, 2019Effluent Violations - Unapproved BypassST6
May 23, 2019Permit Violations - Violation Specified in CommentST6
January 23, 2018Permit Violations - Violation Specified in CommentST6
February 1, 2017Permit Violations - Violation Specified in CommentST6

Inspections

DateWhat EPA recordedAgency
May 14, 2026EvaluationS
February 25, 2026EvaluationS

Formal enforcement and penalties

1 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.

DateWhat EPA recordedAgencyFederal penaltyState or local penalty
April 10, 2026State CWA Non Penalty AOState

Informal enforcement

DateWhat EPA recordedAgency
June 26, 2026Letter of Violation/ Warning LetterState

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.

What this page shows

This page covers the NPDES permit OK0026093 for MCALESTER, CITY OF - WEST PLANT in Mcalester, OK. The permit is an individual permit for a Major discharger with a class 51 designation and lists 10 pollutants under a numeric limit. The facility discharges to 220600020093_00 Trib/Sandy Ck/Deer Ck and is administratively continued.