Clean Water Act discharge permit · NPDES MN0020567
MONTICELLO WWTP, Monticello, MN: NPDES MN0020567 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 19Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
MONTICELLO WWTP, held by Monticello city of, holds NPDES permit MN0020567. EPA’s file records it issued June 1, 2020 and expiring May 31, 2025. 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 | MONTICELLO WWTP |
|---|---|
| Permittee as filed | Monticello city of |
| NPDES ID | MN0020567 |
| 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 | June 1, 2020 |
| Expiration date | May 31, 2025 |
| Issuing agency | STA |
| Address | Monticello, MN 55362 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | City of Elk River-Mississippi River (HUC 070102030605) |
| Other EPA IDs (FRS) | RCRA handler MNR000013961 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 19Pollutants on file
- 19Under a numeric limit
- 19With a violation of any kind
- 5With 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 | 8 | 21 | 5 | August 31, 2024 | 107% over the limit |
| Phosphorus, total [as P] | 3 | 12 | 3 | June 30, 2026 | 2% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 6 | 16 | 2 | May 31, 2025 | 49% over the limit |
| pH | 4 | 7 | 1 | February 28, 2025 | |
| Chlorine, total residual | 1 | 3 | 1 | April 30, 2020 | 32% over the limit |
| Flow, in conduit or thru treatment plant | 6 | 18 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 5 | 0 | ||
| Nitrogen, total [as N] | 2 | 4 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 4 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 1 | 4 | 0 | ||
| Solids, suspended percent removal | 1 | 4 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 3 | 0 | ||
| Solids, total dissolved | 1 | 3 | 0 | ||
| Mercury, total [as Hg] | 3 | 2 | 0 | ||
| Mercury, dissolved [as Hg] | 2 | 2 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 2 | 0 | ||
| Precipitation, total defined period/in | 1 | 1 | 0 | ||
| Copper, total [as Cu] | 1 | 1 | 0 | ||
| Coliform, fecal MPN + membrane ftl 44.5 C | 1 | 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 MN0020567.
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 MN0020567 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.