Clean Water Act discharge permit · NPDES MN0030171
MANKATO WATER RESOURCE RECOVERY FACILITY, Mankato, MN: NPDES MN0030171 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 27Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
MANKATO WATER RESOURCE RECOVERY FACILITY, held by Mankato Water Resource Recovery Facility, holds NPDES permit MN0030171, which discharges to Minn R. EPA’s file records it issued September 22, 2010 and expiring August 31, 2015. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MANKATO WATER RESOURCE RECOVERY FACILITY |
|---|---|
| Permittee as filed | Mankato Water Resource Recovery Facility |
| NPDES ID | MN0030171 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | September 22, 2010 |
| Expiration date | August 31, 2015 |
| Address | Mankato, MN 56001 |
| Receiving water | MINN R |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | City of Mankato-Minnesota River (HUC 070200071102) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 27Pollutants on file
- 27Under a numeric limit
- 7With a violation of any kind
- 4With 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, tot, MPN, completed, [100 mL] | 1 | 6 | 6 | September 30, 2019 | 650% over the limit |
| Chlorine, total residual | 1 | 4 | 4 | November 30, 2022 | 1,111% over the limit |
| pH | 4 | 2 | 2 | March 31, 2026 | |
| Phosphorus, total [as P] | 6 | 1 | 1 | September 30, 2025 | 3% over the limit |
| Flow, in conduit or thru treatment plant | 9 | 27 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 1 | 1 | 0 | ||
| Solids, suspended percent removal | 1 | 1 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 10 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 8 | 0 | 0 | ||
| Solids, total suspended | 6 | 0 | 0 | ||
| Turbidity | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 0 | 0 | ||
| Coliform, fecal MPN + membrane ftl 44.5 C | 2 | 0 | 0 | ||
| Mercury, total [as Hg] | 2 | 0 | 0 | ||
| Precipitation, total defined period/in | 1 | 0 | 0 | ||
| Nitrogen, nitrate total [as N] | 1 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 1 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 0 | 0 | ||
| Cyanide, total [as CN] | 1 | 0 | 0 | ||
| Beryllium, total [as Be] | 1 | 0 | 0 | ||
| Cadmium, total [as Cd] | 1 | 0 | 0 | ||
| Chromium, total [as Cr] | 1 | 0 | 0 | ||
| Copper, total [as Cu] | 1 | 0 | 0 | ||
| Silver, total [as Ag] | 1 | 0 | 0 | ||
| Selenium, total [as Se] | 1 | 0 | 0 | ||
| Solids, total dissolved | 1 | 0 | 0 | ||
| Phosphorous, in total orthophosphate | 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
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 12, 2021 | Monitoring Violations - Failure to Monitor for Toxicity Requirements | ST6 |
| October 12, 2021 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| October 12, 2021 | Effluent Violations - Unapproved Bypass | ST6 |
| October 12, 2021 | Reporting Violations - Failure to Notify | ST6 |
| October 12, 2021 | Effluent Violations - Narrative Effluent Violation | ST6 |
| October 12, 2021 | Management Practice Violations - Best Management Practice Deficiencies | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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 MN0030171 there.
Nearby on the register
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- Discharge permits in Minnesota
- Every permit record in Minnesota, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.