Clean Water Act discharge permit · NPDES IN0063711
CLEVELAND-CLIFFS STEEL LLC - CENTRAL TREATMENT PLANT, East Chicago, IN: NPDES IN0063711 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 26Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
- 2Inspections on file
- 0Formal enforcement actions
CLEVELAND-CLIFFS STEEL LLC - CENTRAL TREATMENT PLANT holds NPDES permit IN0063711, which discharges to Lake Michigan Via Indiana Harbor Ships Canal. EPA’s file records it issued July 21, 2017 and expiring August 31, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CLEVELAND-CLIFFS STEEL LLC - CENTRAL TREATMENT PLANT |
|---|---|
| Permittee as filed | CLEVELAND-CLIFFS STEEL LLC - CENTRAL TREATMENT PLANT |
| NPDES ID | IN0063711 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | July 21, 2017 |
| Expiration date | August 31, 2022 |
| Issuing agency | IDEM |
| Address | East Chicago, IN 46312 |
| Receiving water | LAKE MICHIGAN VIA INDIANA HARBOR SHIPS CANAL |
| Subwatershed | Calumet River-Frontal Lake Michigan (HUC 040400010603) |
| Other EPA IDs (FRS) | RCRA handler IND005462601; ICIS-AIR source IN0000001808900318 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 28Pollutants on file
- 26Under a numeric limit
- 10With a violation of any kind
- 9With 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 |
|---|---|---|---|---|---|
| Mercury, total recoverable | 4 | 7 | 7 | August 31, 2023 | 238% over the limit |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 3 | 5 | 3 | September 30, 2020 | 360% over the limit |
| Oil and grease, hexane extr method | 8 | 3 | 3 | August 31, 2019 | 400% over the limit |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 3 | 4 | 2 | September 30, 2020 | 299% over the limit |
| Copper, total recoverable | 8 | 2 | 2 | June 30, 2014 | 14,515% over the limit |
| Toxicity [acute], Ceriodaphnia dubia | 3 | 3 | 1 | August 31, 2020 | 95% over the limit |
| Toxicity [chronic], Ceriodaphnia dubia | 3 | 3 | 1 | August 31, 2020 | 299% over the limit |
| Silver total recoverable | 0 | 1 | 1 | July 31, 2012 | 10% over the limit |
| Naphthalene | 0 | 1 | 1 | April 30, 2014 | 18,786% over the limit |
| Chlorine, total residual | 8 | 4 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 12 | 0 | 0 | ||
| Solids, total suspended | 8 | 0 | 0 | ||
| Cyanide, total [as CN] | 8 | 0 | 0 | ||
| Cyanide, free [amenable to chlorination] | 8 | 0 | 0 | ||
| Zinc, total recoverable | 8 | 0 | 0 | ||
| Temperature, water deg. fahrenheit | 4 | 0 | 0 | ||
| Cyanide, free [as free] | 4 | 0 | 0 | ||
| Nickel, total recoverable | 4 | 0 | 0 | ||
| Lead, total recoverable | 4 | 0 | 0 | ||
| Chromium, total recoverable | 4 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 | ||
| Total toxic organics [TTO] [40 CFR433] | 4 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Flow, total | 1 | 0 | 0 | ||
| LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia | 1 | 0 | 0 | ||
| LC50 Static Renewal 96Hr Acute Ceriodaphnia dubia | 1 | 0 | 0 | ||
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Noel Statre 7Day Chronic Pimephales | 1 | 0 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 31, 2026 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| August 31, 2026 | Reconnaissance without Sampling | S |
| January 28, 2026 | Reconnaissance without Sampling | S |
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
| Date | What EPA recorded | Agency |
|---|---|---|
| August 31, 2026 | Notice of Noncompliance Issued | State |
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 IN0063711 there.
CLEVELAND-CLIFFS STEEL LLC - CENTRAL TREATMENT PLANT, East Chicago, Indiana: Individual permit IN0063711; Administratively continued (past its expiration date and still in force until reissued); issued July 21, 2017, term to August 31, 2022, by IDEM; discharges to LAKE MICHIGAN VIA INDIANA HARBOR SHIPS CANAL.
18 of the 28 pollutants listed for NPDES IN0063711 have no violation or effluent exceedance.
- Mercury, total recoverable: 4 limits, 7 violations of any kind, 7 effluent exceedances, latest August 31, 2023, largest 238% over the limit.
- Toxicity [acute], Pimephales promelas [Fathead Minnow]: 3 limits, 5 violations of any kind, 3 effluent exceedances, latest September 30, 2020, largest 360% over the limit.
- Oil and grease, hexane extr method: 8 limits, 3 violations of any kind, 3 effluent exceedances, latest August 31, 2019, largest 400% over the limit.
- Toxicity [chronic], Pimephales promelas [Fathead Minnow]: 3 limits, 4 violations of any kind, 2 effluent exceedances, latest September 30, 2020, largest 299% over the limit.
- Copper, total recoverable: 8 limits, 2 violations of any kind, 2 effluent exceedances, latest June 30, 2014, largest 14,515% over the limit.
- Toxicity [acute], Ceriodaphnia dubia: 3 limits, 3 violations of any kind, 1 effluent exceedance, latest August 31, 2020, largest 95% over the limit.
- Toxicity [chronic], Ceriodaphnia dubia: 3 limits, 3 violations of any kind, 1 effluent exceedance, latest August 31, 2020, largest 299% over the limit.
- Silver total recoverable: 0 limits, 1 violation of any kind, 1 effluent exceedance, latest July 31, 2012, largest 10% over the limit.
- Naphthalene: 0 limits, 1 violation of any kind, 1 effluent exceedance, latest April 30, 2014, largest 18,786% over the limit.
- Chlorine, total residual: 8 limits, 4 violations of any kind.
- Chromium, hexavalent dissolved [as Cr]: 12 limits.
- Solids, total suspended: 8 limits.
- Cyanide, total [as CN]: 8 limits.
- Cyanide, free [amenable to chlorination]: 8 limits.
- Zinc, total recoverable: 8 limits.
- Temperature, water deg. fahrenheit: 4 limits.
- Cyanide, free [as free]: 4 limits.
- Nickel, total recoverable: 4 limits.
- Lead, total recoverable: 4 limits.
- Chromium, total recoverable: 4 limits.
- Flow, in conduit or thru treatment plant: 4 limits.
- Total toxic organics [TTO] [40 CFR433]: 4 limits.
- pH: 2 limits.
- Flow, total: 1 limit.
- LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia: 1 limit.
- LC50 Static Renewal 96Hr Acute Ceriodaphnia dubia: 1 limit.
- NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia: 1 limit.
- Noel Statre 7Day Chronic Pimephales: 1 limit.
- August 31, 2026: Management Practice Violations - Improper Operation and Maintenance (ST6).
- August 31, 2026: Reconnaissance without Sampling (S).
- August 31, 2026: Notice of Noncompliance Issued (State).
- January 28, 2026: Reconnaissance without Sampling (S).
CLEVELAND-CLIFFS STEEL LLC - CENTRAL TREATMENT PLANT among its neighbors
107 discharge permits are in the Calumet River-Frontal Lake Michigan subwatershed (HUC 040400010603); IN0063711 is one. Its county: 204, 18 major; IN0063711 is major permit.
Other permits in the Calumet River-Frontal Lake Michigan subwatershed (HUC 040400010603)
- 12950 S. STONY ISLAND AVENUE, Chicago: ILR10ZDWT, minor, term to 2028-08-31
- ATLAS TUBE INC, Chicago: ILR001091, minor, term to 2008-06-01
- BP PRODUCTS WHITING REFINERY, Whiting: IN0000108, major, term to 2024-03-31
- BUCKEYE KG999B1, East Chicago: INRA11590, minor, term to 2028-04-11
- BUCKEYE PIPELINE COMPANY EAST CHICAGO STATION, East Chicago: ING340068, minor, term to 2020-10-31
- BUCKEYE TERMINALS LLC - EAST CHICAGO TERMINAL, East Chicago: IN0063118, minor, term to 2019-09-30
- BUCKEYE TERMINALS LLC EAST CHICAGO TERMINAL, East Chicago: ING340080, minor, term to 2025-10-31
- BUFFINGTON HARBOR DRIVE, Gary: INRA17999, minor, term to 2031-05-03
- CALUMET COLLEGE, Hammond: INRA17957, minor, term to 2031-04-15
- CALUMET ENERGY, Collinsville: ILG870863, minor, term to 2021-10-31
Nearby on the register
- Discharge permits in East Chicago
- Every permit record in East Chicago, A to Z
- Discharge permits in Indiana
- Every permit record in Indiana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.
What this page shows
This public-records page covers NPDES permit IN0063711 for Cleveland-Cliffs Steel LLC's Central Treatment Plant in East Chicago, IN, which discharges to Lake Michigan via Indiana Harbor Ships Canal in watershed HUC 040400010603. The page lists a Major Discharger class, 26 pollutants under a numeric limit, and 9 pollutants with an effluent exceedance.