Clean Water Act discharge permit · NPDES MN0049204

COKATO WWTP, Cokato, MN: NPDES MN0049204 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
18Pollutants under a numeric limit
5Pollutants with an effluent exceedance

COKATO WWTP, held by Cokato city of, holds NPDES permit MN0049204. EPA’s file records it issued February 1, 2019 and expiring March 31, 2021. 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	COKATO WWTP
Permittee as filed	Cokato city of
NPDES ID	MN0049204
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	February 1, 2019
Expiration date	March 31, 2021
Issuing agency	STA
Address	Cokato, MN 55321
Receiving water impaired	303(D) Listed
Subwatershed	French Lake-North Fork Crow River (HUC 070102040602)
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

18Pollutants on file
18Under 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	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Solids, total suspended	7	38	34	February 28, 1994	307% over the limit
BOD, carbonaceous [5 day, 20 C]	6	27	23	May 31, 2026	244% over the limit
Solids, suspended percent removal	1	14	14	April 30, 2026	153% over the limit
Coliform, fecal MPN + membrane ftl 44.5 C	1	12	12	April 30, 1993	99,999% over the limit
BOD, carb-5 day, 20 deg C, percent removal	1	2	2	March 31, 2021	13% over the limit
Flow, in conduit or thru treatment plant	6	54	0
pH	4	4	0
Oxygen, dissolved [DO]	1	2	0
Phosphorus, total [as P]	3	0	0
Nitrogen, total [as N]	2	0	0
Nitrogen, ammonia total [as N]	2	0	0
Nitrogen, Kjeldahl, total [as N]	2	0	0
Nitrite + Nitrate total [as N]	2	0	0
Precipitation, total defined period/in	1	0	0
Chlorine, total residual	1	0	0
Solids, total dissolved	1	0	0
Mercury, dissolved [as Hg]	1	0	0
Mercury, total [as Hg]	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 MN0049204.

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, MN0049204.

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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 MN0049204 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 MN0049204 for the COKATO WWTP in Cokato, MN, held by Cokato city of, with an administratively continued status and a listed issue date of February 1, 2019 and expiration date of March 31, 2021. The page lists 18 pollutants on file, 18 under a numeric limit, and 5 with an effluent exceedance, within the French Lake-North Fork Crow River watershed (HUC 070102040602).