Clean Water Act discharge permit · NPDES MN0031186
WORTHINGTON WWTP, Worthington, MN: NPDES MN0031186 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 26Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
WORTHINGTON WWTP, held by Worthington city of, holds NPDES permit MN0031186. EPA’s file records it issued May 1, 2021 and expiring April 30, 2026. 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 | WORTHINGTON WWTP |
|---|---|
| Permittee as filed | Worthington city of |
| NPDES ID | MN0031186 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | May 1, 2021 |
| Expiration date | April 30, 2026 |
| Issuing agency | STA |
| Address | Worthington, MN 56187 |
| Subwatershed | Upper Okabena Creek (HUC 071000010502) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 26Pollutants on file
- 26Under a numeric limit
- 2With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| Solids, suspended percent removal | 1 | 4 | 4 | May 31, 2024 | 60% over the limit |
| pH | 4 | 1 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 10 | 0 | 0 | ||
| Solids, total suspended | 7 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 6 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 0 | 0 | ||
| Phosphorus, total [as P] | 4 | 0 | 0 | ||
| Nitrogen, total [as N] | 2 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 0 | 0 | ||
| Specific conductance | 1 | 0 | 0 | ||
| Precipitation, total defined period/in | 1 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 0 | 0 | ||
| Bicarbonate ion- [as HCO3] | 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 | ||
| Hardness, Ca Mg Calculated [mg/L as CaCO3] | 1 | 0 | 0 | ||
| Coliform, fecal MPN + membrane ftl 44.5 C | 1 | 0 | 0 | ||
| Chlorine, total residual | 1 | 0 | 0 | ||
| Solids, total dissolved | 1 | 0 | 0 | ||
| Mercury, dissolved [as Hg] | 1 | 0 | 0 | ||
| Mercury, total [as Hg] | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MN0031186.
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 MN0031186 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 September 15, 2026.