Clean Water Act discharge permit · NPDES MN0031879
US STEEL/KEEWATIN TACONITE, Keewatin, MN: NPDES MN0031879 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 14Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
US STEEL/KEEWATIN TACONITE holds NPDES permit MN0031879, which discharges to Welcome Cr/Welcome L/Unmd Trb/Wtlnd. EPA’s file records it issued June 15, 2006 and expiring May 31, 2011. 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 | US STEEL/KEEWATIN TACONITE |
|---|---|
| Permittee as filed | US STEEL/KEEWATIN TACONITE |
| NPDES ID | MN0031879 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | June 15, 2006 |
| Expiration date | May 31, 2011 |
| Address | Keewatin, MN 55753 |
| Receiving water | WELCOME CR/WELCOME L/UNMD TRB/WTLND |
| Subwatershed | Hay Creek (HUC 070101030401) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 16Pollutants on file
- 14Under a numeric limit
- 7With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Coliform, fecal MPN + membrane ftl 44.5 C | 0 | 85 | 22 | December 31, 1994 | 2,400% over the limit |
| Turbidity | 3 | 20 | 20 | February 28, 2013 | |
| Solids, total suspended | 7 | 108 | 16 | September 30, 2024 | 193% over the limit |
| pH | 8 | 102 | 10 | December 31, 2023 | |
| Iron, dissolved [as Fe] | 6 | 36 | 4 | July 31, 2019 | 99,999% over the limit |
| Flow, in conduit or thru treatment plant | 8 | 131 | 0 | ||
| BOD, 5-day, 20 deg. C | 0 | 60 | 0 | ||
| Sulfate, total [as SO4] | 6 | 0 | 0 | ||
| Oil and grease, hexane extr method | 4 | 0 | 0 | ||
| Specific conductance | 3 | 0 | 0 | ||
| Mercury, total [as Hg] | 3 | 0 | 0 | ||
| Temperature, water deg. fahrenheit | 2 | 0 | 0 | ||
| Nitrogen, ammonia, tot unionized [as N] | 2 | 0 | 0 | ||
| Phosphorus, total [as P] | 1 | 0 | 0 | ||
| Hardness, Ca Mg Calculated [mg/L as CaCO3] | 1 | 0 | 0 | ||
| Solids, total dissolved | 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 10, 2025 | Effluent Violations - Numeric effluent violation | EP6 |
| February 27, 2024 | Effluent Violations - Numeric effluent violation | EP6 |
| September 18, 2019 | Effluent Violations - Unauthorized Discharge | ST6 |
| August 28, 2019 | Effluent Violations - Unauthorized Discharge | ST6 |
| August 28, 2019 | Reporting Violations - Failure to Notify | ST6 |
| January 18, 2019 | WW Storm Water Non-Construction - Failure to Implement SWPPP/SWMP | ST6 |
| June 15, 2017 | Effluent Violations - Unauthorized Discharge | ST6 |
| June 15, 2017 | Reporting Violations - Failure to Notify | 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.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.