Clean Water Act discharge permit · NPDES WI0021768

SEYMOUR WASTEWATER TREATMET FA, Seymour, WI: NPDES WI0021768 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
8Pollutants under a numeric limit
4Pollutants with an effluent exceedance

SEYMOUR WASTEWATER TREATMET FA, held by SEYMOUR WASTEWATER TREATMENT F, holds NPDES permit WI0021768, which discharges to Black Cr. EPA’s file records it issued November 18, 2009 and expiring March 31, 2014. 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	SEYMOUR WASTEWATER TREATMET FA
Permittee as filed	SEYMOUR WASTEWATER TREATMENT F
NPDES ID	WI0021768
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	November 18, 2009
Expiration date	March 31, 2014
Address	Seymour, WI 54165
Receiving water	BLACK CR
Receiving water impaired	303(D) Listed
Subwatershed	Upper Black Creek (HUC 040302020805)
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

12Pollutants on file
8Under a numeric limit
11With 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, total suspended	4	75	7	April 30, 2026	2,700% over the limit
BOD, 5-day, 20 deg. C	4	71	3	April 30, 2026	567% over the limit
Nitrogen, ammonia total [as N]	0	38	3	February 29, 2020	40% over the limit
Phosphorus, total [as P]	1	20	1	July 31, 2021	23% over the limit
pH	2	34	0
Flow, in conduit or thru treatment plant	2	34	0
Oxygen, dissolved [DO]	1	17	0
Phosphorus, total percent removal	0	6	0
Chloride [as Cl]	1	3	0
Suspended solids	0	1	0
Biochemical oxygen demand-5	0	1	0
Temperature, water deg. fahrenheit	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 WI0021768.

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

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, WI0021768.

Start the watch

How we handle your data → Privacy

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 WI0021768 there.

Nearby on the register

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

This public-records page covers Clean Water Act discharge permit NPDES WI0021768 for the Seymour wastewater treatment facility in Seymour, WI, which discharges to Black Cr and is listed as administratively continued. The page lists 8 pollutants under a numeric limit and 4 pollutants with an effluent exceedance, with the permit issued November 18, 2009 and expiring March 31, 2014.