Clean Water Act discharge permit · NPDES WI0021253

ELLSWORTH WASTEWATER TREATMENT, Ellsworth, WI: NPDES WI0021253 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
7Pollutants with an effluent exceedance

ELLSWORTH WASTEWATER TREATMENT holds NPDES permit WI0021253, which discharges to Isabelle Cr. EPA’s file records it issued December 21, 2010 and expiring December 31, 2015. 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	ELLSWORTH WASTEWATER TREATMENT
Permittee as filed	ELLSWORTH WASTEWATER TREATMENT
NPDES ID	WI0021253
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	December 21, 2010
Expiration date	December 31, 2015
Address	Ellsworth, WI 54011
Receiving water	ISABELLE CR
Subwatershed	Isabelle Creek (HUC 070400010701)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

11Pollutants on file
0Under a numeric limit
11With a violation of any kind
7With 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
Chloride [as Cl]	82	31	January 31, 2026	116% over the limit
BOD, 5-day, 20 deg. C	95	27	December 31, 2025	226% over the limit
Solids, total suspended	82	14	November 30, 2025	233% over the limit
Nitrogen, total [as N]	30	13	April 30, 2026	224% over the limit
Phosphorus, total [as P]	21	4	October 31, 2025	102% over the limit
Coliform, fecal general	20	2	October 31, 2025	400% over the limit
pH	35	1	April 30, 2019
Flow, in conduit or thru treatment plant	68	0
Oxygen, dissolved [DO]	17	0
Nitrogen, Kjeldahl, total [as N]	17	0
Nitrite + Nitrate total [as N]	17	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
March 31, 2023	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 WI0021253 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers NPDES permit WI0021253 for ELLSWORTH WASTEWATER TREATMENT in Ellsworth, WI, which discharges to ISABELLE CR within the Isabelle Creek subwatershed (HUC 070400010701). The permit is listed as administratively continued, with a minor discharger class of 0, and EPA's file shows it was issued December 21, 2010 and expired December 31, 2015. The page lists 11 pollutants on file, 7 of which are under a numeric limit and 7 of which show an effluent exceedance.