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Clean Water Act discharge permit · NPDES IN0000281

UNITED STATES STEEL CORP - GARY WORKS FACILITY, Gary, IN: NPDES IN0000281 discharge permit, effluent exceedances, inspections, penalties

UNITED STATES STEEL CORP - GARY WORKS FACILITY, held by U.S. STEEL CORP - GARY WORKS, holds NPDES permit IN0000281, which discharges to Grand Calumet R To Lake Michigan. EPA’s file records it issued October 2, 2015 and expiring October 31, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedUNITED STATES STEEL CORP - GARY WORKS FACILITY
Permittee as filedU.S. STEEL CORP - GARY WORKS
NPDES IDIN0000281
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typeNot a publicly owned treatment works
IssuedOctober 2, 2015
Expiration dateOctober 31, 2020
Issuing agencyIDEM
AddressGary, IN 46402
Receiving waterGRAND CALUMET R TO LAKE MICHIGAN
Receiving water impaired303(D) Listed
SubwatershedCalumet River-Frontal Lake Michigan (HUC 040400010603)

Cited to the EPA ICIS-NPDES permit file (ECHO 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
pH51112102July 31, 2009
Chlorine, total residual763725July 31, 1996360% over the limit
Solids, total suspended683113November 30, 2024982% over the limit
Nitrogen, ammonia total [as N]522412March 31, 2003325% over the limit
Mercury, total recoverable381612October 31, 20201,150% over the limit
Temperature, water deg. fahrenheit441411October 31, 20255% over the limit
BOD, carbonaceous [5 day, 20 C]401017July 31, 200396% over the limit
Cyanide, weak acid, dissociable38267October 31, 2014266% over the limit
Benzo[a]pyrene3277June 30, 2007573% over the limit
Selenium, total recoverable1277November 30, 2018121% over the limit
Oil & Grease077October 31, 2000123% over the limit
Phenolics, total recoverable33146March 31, 2004161% over the limit
Toxicity [chronic], Ceriodaphnia dubia866April 30, 20241,222% over the limit
Zinc, total recoverable87205January 31, 202623,048% over the limit
Zinc, total [as Zn]055October 31, 2006146% over the limit
Oil and grease, hexane extr method84163May 31, 202060% over the limit
Chromium, total recoverable2483March 31, 2005206% over the limit
Copper, total recoverable3292July 31, 201327% over the limit
Chromium, hexavalent dissolved [as Cr]2022May 31, 2014728% over the limit
Lead, total [as Pb]022August 31, 19986,754% over the limit
Toxicity [chronic], Pimephales promelas [Fathead Minnow]022August 31, 20152,678% over the limit
Thermal Discharge321November 30, 20192% over the limit
Naphthalene1411August 31, 19983% over the limit
Toxicity [acute], Ceriodaphnia dubia811August 31, 201599,999% over the limit
Toxicity [acute], Pimephales promelas [Fathead Minnow]011August 31, 20159,900% over the limit
Flow, in conduit or thru treatment plant62270
Lead, total recoverable73230
Flow rate0140
Nickel, total recoverable4080
Cadmium, total recoverable4080
Cyanide, total [as CN]3680
Flow, total2660
Nitrogen, Kjeldahl, total [as N]1650
Nitrite + Nitrate total [as N]1650
Phosphorus, total [as P]1650
Chemical Oxygen Demand [COD]1650
Silver total recoverable2040
Tetrachloroethylene1020
Surface area, square feet020
Depth to water level ft below landsurface020
Iron, total recoverable310
Manganese, total recoverable210
Oxygen, dissolved [DO]110
Velocity of intake010
Fluoride, total [as F]1600
Benzene1200
Total toxic organics [TTO] [40 CFR433]500
Chloride [as Cl]400
Sulfate, total [as SO4]400
Temperature, length of excursion300
Chromium, total [as Cr]100

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES IN0000281.

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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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID IN0000281 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.