Clean Water Act discharge permit · NPDES MN0066079

LONG PRAIRIE WWTP, Long Prairie, MN: NPDES MN0066079 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
27Pollutants under a numeric limit
3Pollutants with an effluent exceedance

LONG PRAIRIE WWTP, held by Long Prairie WWTP - Municipal, holds NPDES permit MN0066079, which discharges to Long Prairie River. EPA’s file records it issued June 9, 2011 and expiring May 31, 2016. 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	LONG PRAIRIE WWTP
Permittee as filed	Long Prairie WWTP - Municipal
NPDES ID	MN0066079
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	June 9, 2011
Expiration date	May 31, 2016
Address	Long Prairie, MN 56347
Receiving water	LONG PRAIRIE RIVER
Receiving water impaired	303(D) Listed
Subwatershed	Drayer Creek-Long Prairie River (HUC 070101080207)

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

Effluent limits and exceedances

27Pollutants on file
27Under a numeric limit
4With 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
Solids, suspended percent removal	1	4	4	July 31, 2018	266% over the limit
pH	8	1	1	May 31, 2017
Coliform, fecal MPN + membrane ftl 44.5 C	1	1	1	April 30, 2016	148% over the limit
Mercury, total [as Hg]	2	2	0
Specific conductance	6	0	0
Bicarbonate ion- [as HCO3]	6	0	0
Solids, total suspended	6	0	0
Nitrogen, ammonia total [as N]	6	0	0
Calcium, total [as Ca]	6	0	0
Magnesium, total [as Mg]	6	0	0
Sodium, total [as Na]	6	0	0
Potassium, total [as K]	6	0	0
Chloride [as Cl]	6	0	0
Sulfate, total [as SO4]	6	0	0
Hardness, Ca Mg Calculated [mg/L as CaCO3]	6	0	0
Flow, in conduit or thru treatment plant	6	0	0
Solids, total dissolved	6	0	0
BOD, carbonaceous [5 day, 20 C]	6	0	0
Phosphorus, total [as P]	5	0	0
Temperature, water deg. centigrade	4	0	0
Salinity	2	0	0
Nitrite + Nitrate total [as N]	2	0	0
Precipitation, total defined period/in	1	0	0
Oxygen, dissolved [DO]	1	0	0
Nitrogen, Kjeldahl, total [as N]	1	0	0
Chlorine, total residual	1	0	0
BOD, carb-5 day, 20 deg C, percent removal	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 MN0066079.

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 MN0066079 there.

Nearby on the register

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

This public-records page covers the Clean Water Act discharge permit NPDES MN0066079 for the LONG PRAIRIE WWTP in Long Prairie, MN, held by Long Prairie WWTP - Municipal, which discharges to the Long Prairie River. The permit is listed as administratively continued, with a discharger class of Major Discharger, and the facility's file lists 27 pollutants, 3 of which carry a numeric limit and 3 of which show an effluent exceedance. Records give the watershed as Drayer Creek-Long Prairie River, HUC 070101080207.