Clean Water Act discharge permit · NPDES MN0020401
REDWOOD FALLS WWTP, Redwood Falls, MN: NPDES MN0020401 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 26Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
REDWOOD FALLS WWTP, held by Redwood Falls city of, holds NPDES permit MN0020401. EPA’s file records it issued January 1, 2023 and expiring December 31, 2027. 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 | REDWOOD FALLS WWTP |
|---|---|
| Permittee as filed | Redwood Falls city of |
| NPDES ID | MN0020401 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | January 1, 2023 |
| Expiration date | December 31, 2027 |
| Issuing agency | STA |
| Address | Redwood Falls, MN 56283 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Smith Creek-Minnesota River (HUC 070200041207) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 29Pollutants on file
- 26Under a numeric limit
- 11With a violation of any kind
- 10With 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, total suspended | 6 | 30 | 28 | May 31, 2026 | 109% over the limit |
| Solids, suspended percent removal | 0 | 27 | 27 | November 30, 2013 | 307% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 24 | 18 | July 31, 2019 | 857% over the limit |
| Phosphorus, total [as P] | 4 | 17 | 17 | April 30, 2020 | 8% over the limit |
| BOD, carb-5 day, 20 deg C, percent removal | 0 | 5 | 5 | April 30, 2012 | 273% over the limit |
| Coliform, fecal MPN + membrane ftl 44.5 C | 1 | 5 | 4 | May 31, 2025 | 460% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 6 | 5 | 3 | July 31, 2019 | 52% over the limit |
| Nitrogen, ammonia, tot unionized [as N] | 1 | 4 | 3 | April 30, 2025 | 400% over the limit |
| Chloride [as Cl] | 2 | 2 | 1 | November 30, 1998 | 26% over the limit |
| Carbonaceous oxygen demand, % removal | 0 | 1 | 1 | April 30, 1998 | 7% over the limit |
| Flow, in conduit or thru treatment plant | 6 | 29 | 0 | ||
| pH | 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 | ||
| Sulfate, total [as SO4] | 1 | 0 | 0 | ||
| Chromium, hexavalent [as Cr] | 1 | 0 | 0 | ||
| Hardness, Ca Mg Calculated [mg/L as CaCO3] | 1 | 0 | 0 | ||
| Solids, total dissolved | 1 | 0 | 0 | ||
| Mercury, dissolved [as Hg] | 1 | 0 | 0 | ||
| Mercury, total [as Hg] | 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 |
|---|---|---|
| July 1, 2019 | Effluent Violations - Unapproved Bypass | ST6 |
| April 22, 2019 | Effluent Violations - Unapproved Bypass | ST6 |
| April 14, 2019 | Effluent Violations - Unapproved Bypass | ST6 |
| March 31, 2019 | Effluent Violations - Unapproved Bypass | ST6 |
| July 3, 2018 | Effluent Violations - Unapproved Bypass | ST6 |
| June 24, 2018 | Effluent Violations - Unapproved Bypass | ST6 |
| October 6, 2017 | Effluent Violations - Unauthorized Discharge | ST6 |
| August 17, 2017 | 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.
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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 MN0020401 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.