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Clean Water Act discharge permit · NPDES INP000148

WORTHINGTON STEEL INDUSTRIES, Chesterton, IN: NPDES INP000148 discharge permit, effluent exceedances, inspections, penalties

WORTHINGTON STEEL INDUSTRIES holds NPDES permit INP000148, which discharges to Chesterton Stp (Little Calumet R.). EPA’s file records it issued June 15, 2018 and expiring November 30, 2023.

WORTHINGTON STEEL INDUSTRIES, Chesterton, Indiana: Individual industrial user permit INP000148; Administratively continued (past its expiration date and still in force until reissued); issued June 15, 2018, term to November 30, 2023, by IDEM; discharges to CHESTERTON STP (LITTLE CALUMET R.).

  • Copper, total recoverable: 2 limits, 24 violations of any kind, 12 effluent exceedances, latest July 31, 2017, largest 1,700% over the limit.
  • Lead, total recoverable: 2 limits, 20 violations of any kind, 1 effluent exceedance, latest September 30, 2000, largest 43% over the limit.
  • Zinc, total recoverable: 2 limits, 17 violations of any kind, 1 effluent exceedance, latest July 31, 2007, largest 10% over the limit.
  • Silver total recoverable: 0 limits, 1 violation of any kind, 1 effluent exceedance, latest June 30, 2008, largest 300% over the limit.
  • pH: 2 limits, 16 violations of any kind, 0 effluent exceedances.
  • Flow, in conduit or thru treatment plant: 2 limits, 16 violations of any kind, 0 effluent exceedances.
  • Organics, total toxic [TTO]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
  • September 10, 2026: Reconnaissance without Sampling (S).

WORTHINGTON STEEL INDUSTRIES among its neighbors

Its county holds 88, 7 of them major permits; INP000148 is a minor permit.

Other permits in the county

Identity

Facility as filedWORTHINGTON STEEL INDUSTRIES
Permittee as filedWORTHINGTON STEEL INDUSTRIES
NPDES IDINP000148
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual industrial user permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedJune 15, 2018
Expiration dateNovember 30, 2023
Issuing agencyIDEM
AddressChesterton, IN 46304
Receiving waterCHESTERTON STP (LITTLE CALUMET R.)
SIC3316 – Cold Finishing Of Steel Shapes
Other EPA IDs (FRS)RCRA handler IND984891374; ICIS-AIR source IN0000001812700040

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
Copper, total recoverable22412July 31, 20171,700% over the limit
Lead, total recoverable2201September 30, 200043% over the limit
Zinc, total recoverable2171July 31, 200710% over the limit
Silver total recoverable011June 30, 2008300% over the limit
pH2160
Flow, in conduit or thru treatment plant2160
Organics, total toxic [TTO]100

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES INP000148.

Inspections

DateWhat EPA recordedAgency
September 10, 2026Reconnaissance without SamplingS

Formal enforcement and penalties

0 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.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES INP000148.

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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 Clean Water Act discharge permit NPDES INP000148, held by WORTHINGTON STEEL INDUSTRIES in Chesterton, IN, which discharges to Chesterton Stp (Little Calumet R.). The permit is listed as administratively continued, with 6 pollutants under a numeric limit and 4 pollutants with an effluent exceedance.