Clean Water Act discharge permit · NPDES MN0051101
CROMWELL WWTP, Cromwell, MN: NPDES MN0051101 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
CROMWELL WWTP, held by CROMWELL, holds NPDES permit MN0051101, which discharges to Flower L. EPA’s file records it issued March 29, 2011 and expiring February 29, 2016. 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 | CROMWELL WWTP |
|---|---|
| Permittee as filed | CROMWELL |
| NPDES ID | MN0051101 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | March 29, 2011 |
| Expiration date | February 29, 2016 |
| Address | Cromwell, MN 55726 |
| Receiving water | FLOWER L |
| Subwatershed | Headwaters Tamarack River (HUC 070101030502) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 0Under a numeric limit
- 9With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 0 | 79 | 25 | May 31, 1996 | 160% over the limit |
| Phosphorus, total [as P] | 0 | 33 | 4 | April 30, 2024 | 45% over the limit |
| pH | 0 | 27 | 2 | May 31, 2026 | |
| Solids, total suspended | 0 | 30 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 0 | 30 | 0 | ||
| Oxygen, dissolved [DO] | 0 | 12 | 0 | ||
| Nitrogen, total [as N] | 0 | 1 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 1 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 1 | 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 MN0051101.
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 MN0051101 there.
Nearby on the register
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- Every permit record in Minnesota, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.