Clean Water Act discharge permit · NPDES MN0024538
PRINCETON WWTP, Princeton, MN: NPDES MN0024538 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 17Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
PRINCETON WWTP, held by Princeton WWTP, holds NPDES permit MN0024538, which discharges to Land. EPA’s file records it issued July 24, 2015 and expiring June 30, 2020. 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 | PRINCETON WWTP |
|---|---|
| Permittee as filed | Princeton WWTP |
| NPDES ID | MN0024538 |
| 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 | July 24, 2015 |
| Expiration date | June 30, 2020 |
| Address | Princeton, MN 55371 |
| Receiving water | LAND |
| Subwatershed | City of Princeton-Rum River (HUC 070102070501) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 22Pollutants on file
- 17Under a numeric limit
- 13With 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 | 6 | 28 | 24 | December 31, 1994 | 118% over the limit |
| Nitrogen, ammonia total [as N] | 6 | 3 | 3 | March 31, 2022 | 184% over the limit |
| pH | 4 | 78 | 2 | January 31, 2025 | |
| Temperature, water deg. centigrade | 0 | 36 | 0 | ||
| Specific conductance | 0 | 36 | 0 | ||
| Water level at sample collection time | 0 | 36 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 32 | 0 | ||
| Chloride [as Cl] | 0 | 31 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 28 | 0 | ||
| Coliform, fecal MPN + membrane ftl 44.5 C | 1 | 24 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 10 | 3 | 0 | ||
| Solids, total suspended | 8 | 3 | 0 | ||
| Nitrogen, nitrate total [as N] | 0 | 2 | 0 | ||
| Phosphorus, total [as P] | 5 | 0 | 0 | ||
| Mercury, total [as Hg] | 3 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 0 | 0 | ||
| Nitrogen, total [as N] | 2 | 0 | 0 | ||
| Mercury, dissolved [as Hg] | 2 | 0 | 0 | ||
| Precipitation, total defined period/in | 1 | 0 | 0 | ||
| Solids, total dissolved | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MN0024538.
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 MN0024538 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.