Clean Water Act discharge permit · NPDES MN0031178
WORTHINGTON INDUSTRIAL WWTP, Worthington, MN: NPDES MN0031178 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 29Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
WORTHINGTON INDUSTRIAL WWTP, held by Worthington city of, holds NPDES permit MN0031178. EPA’s file records it issued November 1, 2023 and expiring June 30, 2028. 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 | WORTHINGTON INDUSTRIAL WWTP |
|---|---|
| Permittee as filed | Worthington city of |
| NPDES ID | MN0031178 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | November 1, 2023 |
| Expiration date | June 30, 2028 |
| Issuing agency | STA |
| Address | Worthington, MN 56187 |
| Subwatershed | Upper Okabena Creek (HUC 071000010502) |
| SIC | 2011 – Meat Packing Plants |
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
- 30Pollutants on file
- 29Under a numeric limit
- 17With 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 |
|---|---|---|---|---|---|
| Nitrogen, total [as N] | 3 | 17 | 17 | July 31, 2026 | 57% over the limit |
| pH | 6 | 3 | 3 | November 30, 2014 | |
| Phosphorus, total [as P] | 4 | 3 | 3 | November 30, 2021 | 100% over the limit |
| Solids, total suspended | 10 | 1 | 1 | November 30, 2021 | 10% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 8 | 1 | 1 | January 31, 2025 | 99,999% over the limit |
| Chlorine, total residual | 1 | 1 | 1 | October 31, 2022 | 3% over the limit |
| Toxicity, salmo acute | 0 | 1 | 1 | December 31, 2009 | 233% over the limit |
| Specific conductance | 2 | 1 | 0 | ||
| Calcium, total [as Ca] | 2 | 1 | 0 | ||
| Magnesium, total [as Mg] | 2 | 1 | 0 | ||
| Sodium, total [as Na] | 2 | 1 | 0 | ||
| Potassium, total [as K] | 2 | 1 | 0 | ||
| Chloride [as Cl] | 2 | 1 | 0 | ||
| Solids, total dissolved | 2 | 1 | 0 | ||
| Bicarbonate ion- [as HCO3] | 1 | 1 | 0 | ||
| Sulfate, total [as SO4] | 1 | 1 | 0 | ||
| Hardness, Ca Mg Calculated [mg/L as CaCO3] | 1 | 1 | 0 | ||
| Nitrogen, ammonia total [as N] | 12 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 9 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 0 | 0 | ||
| Oil and grease | 4 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 3 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 0 | 0 | ||
| Coliform, fecal MPN + membrane ftl 44.5 C | 2 | 0 | 0 | ||
| Mercury, dissolved [as Hg] | 2 | 0 | 0 | ||
| Mercury, total [as Hg] | 2 | 0 | 0 | ||
| Temperature, water deg. fahrenheit | 1 | 0 | 0 | ||
| Hardness, total [as CaCO3] | 1 | 0 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 1 | 0 | 0 | ||
| Solids, suspended 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 1, 2018 | Effluent Violations - Unauthorized Discharge | 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 MN0031178 there.
Nearby on the register
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- Every permit record in Worthington, A to Z
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- Every permit record in Minnesota, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.