Clean Water Act discharge permit · NPDES MI0020125
GOGEBIC-IRON WW AUTHORITY WWTP, Ironwood, MI: NPDES MI0020125 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 28Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
GOGEBIC-IRON WW AUTHORITY WWTP, held by Gogebic-Iron Wastewater Authority, holds NPDES permit MI0020125, which discharges to Montreal River. EPA’s file records it issued July 2, 2020 and expiring October 1, 2024. 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 filed | GOGEBIC-IRON WW AUTHORITY WWTP |
|---|---|
| Permittee as filed | Gogebic-Iron Wastewater Authority |
| NPDES ID | MI0020125 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | July 2, 2020 |
| Expiration date | October 1, 2024 |
| Issuing agency | State |
| Address | Ironwood, MI 49938 |
| Receiving water | Montreal River |
| Subwatershed | Welch Creek-Montreal River (HUC 040103020107) |
| Program components on file | Biosolids, POTW |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 29Pollutants on file
- 28Under a numeric limit
- 13With 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 [as Hg] | 6 | 48 | 27 | January 31, 2021 | 186% over the limit |
| Solids, suspended percent removal | 2 | 35 | 21 | April 30, 2026 | 273% over the limit |
| Chlorine, total residual | 1 | 28 | 18 | May 31, 2024 | 874% over the limit |
| Coliform, fecal general | 2 | 41 | 11 | December 31, 2021 | 1,341% over the limit |
| Phosphorus, total [as P] | 4 | 38 | 8 | April 30, 2025 | 20% over the limit |
| pH | 2 | 35 | 5 | May 31, 2023 | |
| Nitrogen, ammonia total [as N] | 12 | 46 | 4 | September 30, 2023 | 98% over the limit |
| Solids, total suspended | 4 | 62 | 2 | March 31, 2026 | 60% over the limit |
| BOD, carb-5 day, 20 deg C, percent removal | 2 | 10 | 1 | April 30, 2025 | 13% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 8 | 60 | 0 | ||
| Cyanide [A] | 0 | 36 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 30 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 16 | 0 | ||
| Copper, total [as Cu] | 4 | 0 | 0 | ||
| Silver, total [as Ag] | 4 | 0 | 0 | ||
| Solids, total | 3 | 0 | 0 | ||
| Arsenic, dry weight | 3 | 0 | 0 | ||
| Selenium, dry weight | 3 | 0 | 0 | ||
| Copper, dry weight | 3 | 0 | 0 | ||
| Cadmium, dry weight | 3 | 0 | 0 | ||
| Nitrogen, total Kjeldahl | 3 | 0 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 0 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 0 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 0 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 0 | 0 | ||
| Nitrogen, sludge, total, dry weight [as N] | 3 | 0 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 0 | 0 | ||
| Potassium, sludge, total, dry weight [as K] | 3 | 0 | 0 | ||
| Phosphorus, sludge, total, dry weight [as P] | 3 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 15, 2018 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| June 15, 2018 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
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.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MI0020125.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 MI0020125 there.
Nearby on the register
- Discharge permits in Ironwood
- Every permit record in Ironwood, A to Z
- Discharge permits in Michigan
- Every permit record in Michigan, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.