Clean Water Act discharge permit · NPDES MN0031241

LONSDALE WWTP, Lonsdale, MN: NPDES MN0031241 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
3Pollutants with an effluent exceedance

LONSDALE WWTP, held by LONSDALE, holds NPDES permit MN0031241, which discharges to Cannon R Via Union Lk Via Heath Cr. EPA’s file records it issued May 14, 2013 and expiring April 30, 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	LONSDALE WWTP
Permittee as filed	LONSDALE
NPDES ID	MN0031241
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	May 14, 2013
Expiration date	April 30, 2018
Address	Lonsdale, MN 55046
Receiving water	CANNON R VIA UNION LK VIA HEATH CR
Subwatershed	Heath Creek (HUC 070400020603)
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

6Pollutants on file
0Under a numeric limit
6With 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	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Solids, total suspended	25	3	October 31, 1989	16% over the limit
BOD, carbonaceous [5 day, 20 C]	24	3	May 31, 1990	72% over the limit
pH	13	1	May 31, 1989
Flow, in conduit or thru treatment plant	27	0
Coliform, fecal MPN + membrane ftl 44.5 C	12	0
Oxygen, dissolved [DO]	6	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 MN0031241.

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 MN0031241 there.

Nearby on the register

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

This public-records page covers the NPDES discharge permit MN0031241 held by LONSDALE WWTP in Lonsdale, MN, a minor discharger classed as a publicly owned treatment works, with its status shown as administratively continued. The page lists 6 pollutants on file, 3 under a numeric limit and 3 with an effluent exceedance, and the permit's receiving water is CANNON R VIA UNION LK VIA HEATH CR in the Heath Creek subwatershed (HUC 070400020603).