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NPDES OK0020788 · Clean Water Act

TECUMSEH, CITY OF, Tecumseh, OK: NPDES OK0020788 discharge permit, effluent exceedances, inspections, penalties

TECUMSEH, CITY OF, Tecumseh, Oklahoma: Individual permit OK0020788, held by Tecumseh, City of; Publicly owned treatment works; Administratively continued; issued July 13, 2020, term to July 31, 2025, by ODEQ; discharges to 520510000190_00 trib/Squirrel Creek; Sewage Treatment Facilities.

  • Nitrogen, ammonia total [as N]: 9 limits, 123 violations of any kind, 90 effluent exceedances, latest June 30, 2026, largest 917% over the limit.
  • Solids, total suspended: 6 limits, 72 violations of any kind, 54 effluent exceedances, latest March 31, 2026, largest 427% over the limit.
  • BOD, carbonaceous [5 day, 20 C]: 6 limits, 47 violations of any kind, 41 effluent exceedances, latest May 31, 2025, largest 232% over the limit.
  • Chlorine, total residual: 1 limit, 34 violations of any kind, 33 effluent exceedances, latest May 31, 2026, largest 2,526% over the limit.
  • E. coli: 4 limits, 28 violations of any kind, 28 effluent exceedances, latest July 31, 2026, largest 59,506% over the limit.
  • Oxygen, dissolved [DO]: 1 limit, 26 violations of any kind, 21 effluent exceedances, latest July 31, 2026, largest 91% over the limit.
  • Whole effluent toxicity: 0 limits, 24 violations of any kind, 18 effluent exceedances, latest May 31, 2010, largest 100% over the limit.
  • Coliform, fecal general: 0 limits, 18 violations of any kind, 16 effluent exceedances, latest May 31, 2014, largest 99,999% over the limit.
  • pH: 2 limits, 37 violations of any kind, 5 effluent exceedances, latest November 30, 2025.
  • Flow, in conduit or thru treatment plant: 2 limits, 24 violations of any kind.
  • Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia: 0 limits, 13 violations of any kind.
  • BOD, 5-day, 20 deg. C: 0 limits, 12 violations of any kind.
  • Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia: 0 limits, 12 violations of any kind.
  • Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas: 0 limits, 12 violations of any kind.
  • NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 0 limits, 12 violations of any kind.
  • NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas: 0 limits, 12 violations of any kind.
  • NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 0 limits, 12 violations of any kind.
  • NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 0 limits, 12 violations of any kind.
  • Coef Of Var Static Renewal 7Day Chronic Pimephales promelas: 0 limits, 12 violations of any kind.
  • Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia: 0 limits, 9 violations of any kind.
  • Pass/Fail Static Renewal 7Day Chronic Pimephales promelas: 0 limits, 9 violations of any kind.
  • %Mortality 7Day Chronic Ceriodaphnia dubia: 0 limits, 9 violations of any kind.
  • %Mortality Static Renewal 7Day Chronic Pimephales Promelas: 0 limits, 9 violations of any kind.
  • Solids, total dissolved- 180 deg. C: 0 limits, 6 violations of any kind.
  • Arsenic, dry weight: 0 limits, 5 violations of any kind.
  • Polychlorinated biphenyls [PCBs]: 0 limits, 5 violations of any kind.
  • Cadmium, dry weight: 0 limits, 5 violations of any kind.
  • Ann. amt sludge disposed by other method: 0 limits, 5 violations of any kind.
  • Annual amt of sludge incinerated: 0 limits, 5 violations of any kind.
  • Annual sludge production, total: 0 limits, 5 violations of any kind.
  • Annual amount of sludge land applied: 0 limits, 5 violations of any kind.
  • Annual amt. sludge disposed surface unit: 0 limits, 5 violations of any kind.
  • Molybdenum, sludge, total, dry weight [as Mo]: 0 limits, 5 violations of any kind.
  • Selenium, dry weight: 0 limits, 4 violations of any kind.
  • Toxicity characteristic leaching procedure: 0 limits, 4 violations of any kind.
  • Copper, dry weight: 0 limits, 4 violations of any kind.
  • Annual amt sludge disposed in landfill: 0 limits, 4 violations of any kind.
  • Annual amt sludge transported interstate: 0 limits, 4 violations of any kind.
  • Zinc, sludge, total, dry weight [as Zn]: 0 limits, 4 violations of any kind.
  • Lead, sludge, total, dry weight [as Pb]: 0 limits, 4 violations of any kind.
  • Nickel, sludge, total, dry weight [as Ni]: 0 limits, 4 violations of any kind.
  • Mercury, sludge, total, dry weight [as Hg]: 0 limits, 4 violations of any kind.
  • Compliance w/part 258 sludge requirement: 0 limits, 2 violations of any kind.
  • Pollutant table from 503.13: 0 limits, 2 violations of any kind.
  • Description of pathogen option used: 0 limits, 2 violations of any kind.
  • Vector attraction reduction alternative used: 0 limits, 2 violations of any kind.
  • Manganese, total [as Mn]: 0 limits, 1 violation of any kind.
  • Di[2-ethylhexyl] phthalate [DEHP]: 0 limits, 1 violation of any kind.
  • Annual whole sludge application rate: 0 limits, 1 violation of any kind.
  • Level of pathogen requirements achieved: 0 limits, 1 violation of any kind.
  • Low Flow Pass/Fail Static Renewal 7Day Chronic Ceriodaphnia Dubia: 0 limits, 1 violation of any kind.
  • LF Pass/Fail Statre 7Day Chronic Pimephales: 0 limits, 1 violation of any kind.
  • September 6, 2023: Effluent Violations - Unapproved Bypass (ST6).
  • September 6, 2023: Management Practice Violations - Best Management Practice Deficiencies (ST6).
  • September 6, 2023: Effluent Violations - Reported Fish Kill (ST6).
  • March 19, 2020: Management Practice Violations - Improper Operation and Maintenance (ST6).
  • March 19, 2020: Permit Violations - Violation Specified in Comment (ST6).
  • March 19, 2020: Reporting Violations - Improper/ Incorrect Reporting (ST6).
  • March 19, 2020: Monitoring Violations - Improper Analysis or Lab Error (ST6).
  • May 7, 2019: Effluent Violations - Unapproved Bypass (ST6).
  • April 23, 2019: Effluent Violations - Unapproved Bypass (ST6).

Oklahoma holds 197 Publicly owned treatment works coverages of this permit type in EPA’s file; 161 were issued before OK0020788.

Coverages issued nearest OK0020788

TECUMSEH, CITY OF among its neighbors

1 discharge permits are in the Squirrel Creek subwatershed (HUC 111003020205); OK0020788 is one. Its county: 9, 2 major; OK0020788 is minor permit.

Identity

FacilityTECUMSEH, CITY OF
PermitteeTecumseh, City of
NPDES IDOK0020788
StatusAdministratively continued
TypeIndividual permit
ClassMinor
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedJuly 13, 2020
ExpiresJuly 31, 2025
AgencyODEQ
AddressTecumseh, OK 74873
Receiving water520510000190_00 trib/Squirrel Creek
SubwatershedSquirrel Creek (HUC 111003020205)
NAICS221320 – Sewage Treatment Facilities
SIC4952 – Sewerage Systems

NPDES OK0020788: effluent limits and exceedances

TECUMSEH, CITY OF (NPDES OK0020788): 52 pollutants on file, 8 limited; 52 with a violation of any kind, 9 with an exceedance.

How exceedances are counted.

PollutantLimitsViolationsExceedancesLatestLargest, as filed
Nitrogen, ammonia total [as N]912390June 30, 2026917% over the limit
Solids, total suspended67254March 31, 2026427% over the limit
BOD, carbonaceous [5 day, 20 C]64741May 31, 2025232% over the limit
Chlorine, total residual13433May 31, 20262,526% over the limit
E. coli42828July 31, 202659,506% over the limit
Oxygen, dissolved [DO]12621July 31, 202691% over the limit
Whole effluent toxicity02418May 31, 2010100% over the limit
Coliform, fecal general01816May 31, 201499,999% over the limit
pH2375November 30, 2025
Flow, in conduit or thru treatment plant2240
Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia0130
BOD, 5-day, 20 deg. C0120
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia0120
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas0120
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia0120
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas0120
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia0120
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas0120
Coef Of Var Static Renewal 7Day Chronic Pimephales promelas0120
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia090
Pass/Fail Static Renewal 7Day Chronic Pimephales promelas090
%Mortality 7Day Chronic Ceriodaphnia dubia090
%Mortality Static Renewal 7Day Chronic Pimephales Promelas090
Solids, total dissolved- 180 deg. C060
Arsenic, dry weight050
Polychlorinated biphenyls [PCBs]050
Cadmium, dry weight050
Ann. amt sludge disposed by other method050
Annual amt of sludge incinerated050
Annual sludge production, total050
Annual amount of sludge land applied050
Annual amt. sludge disposed surface unit050
Molybdenum, sludge, total, dry weight [as Mo]050
Selenium, dry weight040
Toxicity characteristic leaching procedure040
Copper, dry weight040
Annual amt sludge disposed in landfill040
Annual amt sludge transported interstate040
Zinc, sludge, total, dry weight [as Zn]040
Lead, sludge, total, dry weight [as Pb]040
Nickel, sludge, total, dry weight [as Ni]040
Mercury, sludge, total, dry weight [as Hg]040
Compliance w/part 258 sludge requirement020
Pollutant table from 503.13020
Description of pathogen option used020
Vector attraction reduction alternative used020
Manganese, total [as Mn]010
Di[2-ethylhexyl] phthalate [DEHP]010
Annual whole sludge application rate010
Level of pathogen requirements achieved010
Low Flow Pass/Fail Static Renewal 7Day Chronic Ceriodaphnia Dubia010
LF Pass/Fail Statre 7Day Chronic Pimephales010

NPDES OK0020788: inspections, violations and enforcement

NPDES OK0020788: 9 single-event violations

DateWhat EPA recordedAgency
September 6, 2023Effluent Violations - Unapproved BypassST6
September 6, 2023Management Practice Violations - Best Management Practice DeficienciesST6
September 6, 2023Effluent Violations - Reported Fish KillST6
March 19, 2020Management Practice Violations - Improper Operation and MaintenanceST6
March 19, 2020Permit Violations - Violation Specified in CommentST6
March 19, 2020Reporting Violations - Improper/ Incorrect ReportingST6
March 19, 2020Monitoring Violations - Improper Analysis or Lab ErrorST6
May 7, 2019Effluent Violations - Unapproved BypassST6
April 23, 2019Effluent Violations - Unapproved BypassST6

NPDES OK0020788 (TECUMSEH, CITY OF): no inspection, formal enforcement action and informal enforcement action on file.

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Permits near NPDES OK0020788

NPDES OK0020788: 52 pollutant rows, 9 dated events; ICIS-NPDES download, loaded October 14, 2026.