Clean Water Act discharge permit · NPDES MN0024040
MADELIA WWTP, Madelia, MN: NPDES MN0024040 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 26Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
MADELIA WWTP, held by Madelia city of, holds NPDES permit MN0024040. EPA’s file records it issued May 1, 2024 and expiring April 30, 2029. 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 | MADELIA WWTP |
|---|---|
| Permittee as filed | Madelia city of |
| NPDES ID | MN0024040 |
| 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, 2024 |
| Expiration date | April 30, 2029 |
| Issuing agency | STA |
| Address | Madelia, MN 56062 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | City of Madelia-Watonwan River (HUC 070200100604) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 27Pollutants on file
- 26Under a numeric limit
- 9With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| Phosphorus, total [as P] | 6 | 18 | 6 | June 30, 2025 | 156% over the limit |
| pH | 4 | 3 | 3 | March 31, 2017 | |
| Nitrogen, ammonia total [as N] | 8 | 2 | 2 | June 30, 2021 | 452% over the limit |
| Coliform, fecal MPN + membrane ftl 44.5 C | 1 | 2 | 2 | April 30, 2016 | 1,325% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 7 | 4 | 1 | June 30, 2005 | 4% over the limit |
| Chlorine, total residual | 0 | 1 | 1 | September 30, 2008 | 5% over the limit |
| Solids, total suspended | 8 | 3 | 0 | ||
| Flow, in conduit or thru treatment plant | 6 | 2 | 0 | ||
| Hardness, Ca Mg Calculated [mg/L as CaCO3] | 1 | 1 | 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 | ||
| Sulfate, total [as SO4] | 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 | ||
| 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
- 7Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 30, 2020 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| February 16, 2017 | WW Storm Water MS4 - Failure to Implement SWPPP/SWMP | ST6 |
| February 16, 2017 | WW Storm Water Non-Construction - Failure to Conduct Inspections | ST6 |
| February 16, 2017 | WW Storm Water Non-Construction - Failure to Implement SWPPP/SWMP | ST6 |
| February 16, 2017 | WW Storm Water Non-Construction - Failure to Monitor | ST6 |
| February 16, 2017 | Effluent Violations - Unapproved Bypass | ST6 |
| February 16, 2017 | Biosolids: Other Management Practice Violation | 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.