Clean Water Act discharge permit · NPDES MN0030643
HIBBING WWTP SOUTH PLANT, Hibbing, MN: NPDES MN0030643 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 27Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
HIBBING WWTP SOUTH PLANT, held by Hibbing WWTP South Plant, holds NPDES permit MN0030643, which discharges to E Swan R. EPA’s file records it issued September 1, 2012 and expiring July 31, 2017. 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 | HIBBING WWTP SOUTH PLANT |
|---|---|
| Permittee as filed | Hibbing WWTP South Plant |
| NPDES ID | MN0030643 |
| 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 | September 1, 2012 |
| Expiration date | July 31, 2017 |
| Address | Hibbing, MN 55746 |
| Receiving water | E SWAN R |
| Subwatershed | Maple Hill (HUC 040102010603) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 27Pollutants on file
- 27Under a numeric limit
- 9With a violation of any kind
- 7With 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] | 5 | 80 | 75 | April 30, 2020 | 3,900% over the limit |
| Chlorine, total residual | 1 | 9 | 9 | August 31, 2015 | 5% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 5 | 5 | April 30, 2024 | 292% over the limit |
| Solids, suspended percent removal | 1 | 4 | 4 | June 30, 2022 | 40% over the limit |
| Oxygen, dissolved [DO] | 2 | 3 | 3 | March 31, 2026 | 6% over the limit |
| Solids, total suspended | 7 | 5 | 2 | June 30, 2013 | 257% over the limit |
| Phosphorus, total [as P] | 3 | 1 | 1 | January 31, 2005 | 9% over the limit |
| Flow, in conduit or thru treatment plant | 3 | 11 | 0 | ||
| Mercury, dissolved [as Hg] | 1 | 3 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 10 | 0 | 0 | ||
| pH | 4 | 0 | 0 | ||
| Specific conductance | 1 | 0 | 0 | ||
| Precipitation, total defined period/in | 1 | 0 | 0 | ||
| Bicarbonate ion- [as HCO3] | 1 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 1 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 0 | 0 | ||
| Calcium, total [as Ca] | 1 | 0 | 0 | ||
| Magnesium, total [as Mg] | 1 | 0 | 0 | ||
| Sodium, total [as Na] | 1 | 0 | 0 | ||
| Potassium, total [as K] | 1 | 0 | 0 | ||
| Chloride [as Cl] | 1 | 0 | 0 | ||
| Sulfate, total [as SO4] | 1 | 0 | 0 | ||
| Copper, total [as Cu] | 1 | 0 | 0 | ||
| Hardness, Ca Mg Calculated [mg/L as CaCO3] | 1 | 0 | 0 | ||
| Coliform, fecal MPN + membrane ftl 44.5 C | 1 | 0 | 0 | ||
| Solids, total dissolved | 1 | 0 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 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
- 8Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 26, 2023 | Effluent Violations - Unapproved Bypass | ST6 |
| April 19, 2023 | Management Practice Violations - Best Management Practice Deficiencies | ST6 |
| May 31, 2022 | Effluent Violations - Unapproved Bypass | ST6 |
| May 12, 2022 | Effluent Violations - Unapproved Bypass | ST6 |
| April 14, 2022 | Effluent Violations - Unapproved Bypass | ST6 |
| February 25, 2022 | Effluent Violations - Unauthorized Discharge | ST6 |
| February 25, 2022 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| February 25, 2022 | Monitoring Violations - Improper Analysis or Lab Error | 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
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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 MN0030643 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.