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Clean Water Act discharge permit · NPDES IN0023752

MICHIGAN CITY - J. B. GIFFORD WWTP, Michigan City, IN: NPDES IN0023752 discharge permit, effluent exceedances, inspections, penalties

MICHIGAN CITY - J. B. GIFFORD WWTP, held by MICHIGAN CITY - J.B. GIFFORD WWTP, holds NPDES permit IN0023752, which discharges to Trail Cr To Lake Michigan. EPA’s file records it issued December 26, 2019 and expiring January 31, 2025. 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 filedMICHIGAN CITY - J. B. GIFFORD WWTP
Permittee as filedMICHIGAN CITY - J.B. GIFFORD WWTP
NPDES IDIN0023752
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
IssuedDecember 26, 2019
Expiration dateJanuary 31, 2025
Issuing agencyIDEM
AddressMichigan City, IN 46360
Receiving waterTRAIL CR TO LAKE MICHIGAN
Receiving water impaired303(D) Listed
SubwatershedTrail Creek (HUC 040400010105)
Program components on fileBiosolids, CSO, POTW, Pretreatment
SIC4952 – Sewerage Systems
Other EPA IDs (FRS)RCRA handler IND000780346; ICIS-AIR source 0500018091R5002

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

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
Chlorine, total residual102422April 30, 20256,467% over the limit
Copper, total recoverable122517February 29, 2004113% over the limit
Mercury, total recoverable62714February 28, 200183% over the limit
E. coli, colony forming units [CFU]81412June 30, 201317,772% over the limit
Solids, total suspended6197July 31, 20081,278% over the limit
E. coli, MTEC-MF066October 31, 199899,999% over the limit
Nitrogen, ammonia total [as N]10215June 30, 2026235% over the limit
BOD, carbonaceous [5 day, 20 C]6182June 30, 201414% over the limit
Cyanide, total [as CN]0182May 31, 199987% over the limit
Cadmium, total recoverable12102December 31, 199899,999% over the limit
Cyanide, free [as free]1222December 31, 202379% over the limit
Zinc, total recoverable1291June 30, 2000273% over the limit
Lead, total recoverable1291June 30, 2000114% over the limit
Phosphorus, total percent removal161November 30, 19942% over the limit
Nickel, total recoverable1280
Chromium, total recoverable1280
pH480
Flow, in conduit or thru treatment plant380
Cadmium, total [as Cd]080
Chromium, total [as Cr]080
Copper, total [as Cu]080
Lead, total [as Pb]080
Nickel, total [as Ni]080
Zinc, total [as Zn]080
Aluminum, total recoverable080
Aluminum, total [as Al]080
Chromium, hexavalent dissolved [as Cr]080
Mercury, total [as Hg]080
Phosphorus, total [as P]440
Oxygen, dissolved [DO]140
Flow, wastewater by-passing trtmnt plant040
Number of Events410
LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia010
Cyanide, free [amenable to chlorination]1200
Oil and grease, hexane extr method400
Toxicity [acute], Ceriodaphnia dubia300
Toxicity [chronic], Ceriodaphnia dubia300
Toxicity [acute], Pimephales promelas [Fathead Minnow]300
Toxicity [chronic], Pimephales promelas [Fathead Minnow]300
Nitrogen, total [as N]200
Flow, total200

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 IN0023752.

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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Nearby on the register

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

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES IN0023752 for MICHIGAN CITY - J. B. GIFFORD WWTP in Michigan City, IN, which discharges to Trail Cr To Lake Michigan. The permit is listed as administratively continued and a major discharger, with 27 pollutants under a numeric limit and 14 pollutants with an effluent exceedance. The permit was issued December 26, 2019 and expired January 31, 2025.