Clean Water Act discharge permit · NPDES MN0020672

WADENA WWTP, Wadena, MN: NPDES MN0020672 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
5Pollutants with an effluent exceedance

WADENA WWTP, held by Wadena WWTP, holds NPDES permit MN0020672, which discharges to Union Cr. EPA’s file records it issued April 17, 2013 and expiring March 31, 2018. 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	WADENA WWTP
Permittee as filed	Wadena WWTP
NPDES ID	MN0020672
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	April 17, 2013
Expiration date	March 31, 2018
Address	Wadena, MN 56482
Receiving water	UNION CR
Subwatershed	Union Creek (HUC 070101070303)
SIC	4952 – Sewerage Systems
Other EPA IDs (FRS)	RCRA handler MND985752450

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

8Pollutants on file
0Under a numeric limit
8With 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	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
BOD, carbonaceous [5 day, 20 C]	19	17	January 31, 2024	400% over the limit
Chlorine, total residual	13	9	October 31, 1994	470% over the limit
Nitrogen, ammonia total [as N]	7	7	August 31, 1994	410% over the limit
Oxygen, dissolved [DO]	6	5	October 31, 1994	17% over the limit
Solids, total suspended	7	3	April 30, 1997	20% over the limit
Flow, in conduit or thru treatment plant	39	0
pH	4	0
Coliform, fecal MPN + membrane ftl 44.5 C	2	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

1Single-event violations

Date	What EPA recorded	Agency
August 28, 2025	Reporting Violations - Failure to Notify	ST6

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.

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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 MN0020672 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers the Clean Water Act NPDES discharge permit MN0020672 held by Wadena WWTP for the WADENA WWTP facility in Wadena, MN, which discharges to Union Cr, with an administratively continued status and a minor discharger class of 0. The page lists 5 pollutants under a numeric limit and 5 pollutants with an effluent exceedance.