Clean Water Act discharge permit · NPDES WI0020222

CEDARBURG CITY WWTF, Cedarburg, WI: NPDES WI0020222 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
11Pollutants under a numeric limit
3Pollutants with an effluent exceedance

CEDARBURG CITY WWTF, held by CEDARBURG WASTEWATER TREATMENT, holds NPDES permit WI0020222, which discharges to Cedar Creek. EPA’s file records it issued July 1, 2008 and expiring June 30, 2013. 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	CEDARBURG CITY WWTF
Permittee as filed	CEDARBURG WASTEWATER TREATMENT
NPDES ID	WI0020222
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 1, 2008
Expiration date	June 30, 2013
Address	Cedarburg, WI 53012
Receiving water	CEDAR CREEK
Receiving water impaired	303(D) Listed
Subwatershed	Cedar Creek (HUC 040400030304)
Program components on file	Biosolids, POTW
SIC	4952 – Sewerage Systems
Other EPA IDs (FRS)	RCRA handler WID020460820

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

11Pollutants on file
11Under a numeric limit
5With 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
Oxygen, dissolved [DO]	1	6	5	February 28, 2022	22% over the limit
BOD, 5-day, 20 deg. C	12	5	5	August 31, 2025	97% over the limit
Chloride [as Cl]	3	1	1	July 31, 2012	5% over the limit
Mercury, total recoverable	4	64	0
Coliform, fecal general	1	57	0
Nitrogen, ammonia total [as N]	12	0	0
Solids, total suspended	7	0	0
pH	2	0	0
Phosphorus, total [as P]	2	0	0
Polychlorinated biphenyls [PCBs]	2	0	0
Flow, in conduit or thru treatment plant	2	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

2Single-event violations

Date	What EPA recorded	Agency
August 10, 2025	WW SSO - Discharge to Waters	ST6
May 17, 2020	WW SSO - Discharge to Waters	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 WI0020222 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 discharge permit NPDES WI0020222 for the CEDARBURG CITY WWTF in Cedarburg, WI, held by CEDARBURG WASTEWATER TREATMENT, which discharges to CEDAR CREEK within the Cedar Creek subwatershed (HUC 040400030304). The permit is listed as administratively continued, with 3 pollutants under a numeric limit and 3 pollutants with an effluent exceedance, and its file shows issuance on July 1, 2008 and expiration on June 30, 2013.