Clean Water Act discharge permit · NPDES MN0056588
MAYNARD WWTP, Maynard, MN: NPDES MN0056588 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
MAYNARD WWTP, held by MAYNARD, holds NPDES permit MN0056588, which discharges to Hawk Cr. EPA’s file records it issued January 21, 2011 and expiring December 31, 2015. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MAYNARD WWTP |
|---|---|
| Permittee as filed | MAYNARD |
| NPDES ID | MN0056588 |
| 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 | January 21, 2011 |
| Expiration date | December 31, 2015 |
| Address | Maynard, MN 56260 |
| Receiving water | HAWK CR |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | County Ditch No 11 (HUC 070200040903) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 9Pollutants on file
- 0Under a numeric limit
- 9With 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 |
|---|---|---|---|---|---|
| Solids, suspended percent removal | 0 | 5 | 5 | July 31, 2025 | 147% over the limit |
| Solids, total suspended | 0 | 63 | 3 | March 31, 2024 | 63% over the limit |
| Chlorine, total residual | 0 | 13 | 3 | May 31, 1991 | 200% over the limit |
| BOD, carb-5 day, 20 deg C, percent removal | 0 | 1 | 1 | March 31, 2026 | 22% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 0 | 61 | 0 | ||
| pH | 0 | 60 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 17 | 0 | ||
| Oxygen, dissolved [DO] | 0 | 15 | 0 | ||
| Coliform, fecal MPN + membrane ftl 44.5 C | 0 | 10 | 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 MN0056588.
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 MN0056588 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.