Clean Water Act discharge permit · NPDES MNG585228

DEXTER WWTP, Dexter, MN: NPDES MNG585228 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
11Pollutants under a numeric limit
1Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

DEXTER WWTP, held by Dexter city of, holds NPDES permit MNG585228. EPA’s file records it issued January 1, 2020 and expiring November 30, 2023.

DEXTER WWTP, Dexter, Minnesota: Coverage under a general permit MNG585228, held by Dexter city of; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued January 1, 2020, term to November 30, 2023, by STA.

Coliform, fecal MPN + membrane ftl 44.5 C: 1 limit, 1 violation of any kind, 1 effluent exceedance, latest October 31, 2024, largest 2% over the limit.
Flow, in conduit or thru treatment plant: 9 limits, 0 violations of any kind, 0 effluent exceedances.
Solids, total suspended: 5 limits, 0 violations of any kind, 0 effluent exceedances.
BOD, carbonaceous [5 day, 20 C]: 5 limits, 0 violations of any kind, 0 effluent exceedances.
pH: 3 limits, 0 violations of any kind, 0 effluent exceedances.
Phosphorus, total [as P]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
Nitrogen, total [as N]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Nitrogen, Kjeldahl, total [as N]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Nitrite + Nitrate total [as N]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Precipitation, total defined period/in: 1 limit, 0 violations of any kind, 0 effluent exceedances.
Oxygen, dissolved [DO]: 1 limit, 0 violations of any kind, 0 effluent exceedances.

Minnesota holds 240 Publicly owned treatment works coverages of this permit type in EPA’s file; 13 were issued before MNG585228.

Coverages issued nearest MNG585228

January 1, 2020: LEOTA SANITARY DISTRICT WWTP, Leota, MNG585219, held by Leota Sanitary District
January 1, 2020: FARWELL KENSINGTON SANITARY DISTRICT WWTP, Kensington, MNG585220, held by Farwell Kensington Sanitary District
January 1, 2020: WALTERS WWTP, Walters, MNG585223, held by Walters city of
January 1, 2020: BIGELOW WWTP, Bigelow, MNG585224, held by Bigelow city of
January 1, 2020: SHELLY WWTP, Shelly, MNG585227, held by Shelly city of
January 1, 2020: ASKOV WWTP, Askov, MNG585229, held by Askov city of
January 1, 2020: BROOTEN WWTP, Brooten, MNG585271, held by Brooten city of
January 1, 2020: DUNNELL WWTP, Dunnell, MNG585279, held by Dunnell city of
January 1, 2020: ELYSIAN WWTP, Elysian, MNG585285, held by Elysian city of
January 1, 2020: GENEVA WWTP, Geneva, MNG585292, held by Geneva city of

DEXTER WWTP among its neighbors

EPA’s permit file holds 5 discharge permits in the Headwaters North Branch Root River subwatershed (HUC 070400080101), MNG585228 among them. Its county holds 34, 1 of them major permits; MNG585228 is a minor permit.

Other permits in the Headwaters North Branch Root River subwatershed (HUC 070400080101)

DEXTER, Dexter: MN0023183, minor permit, discharging to ROOT R N BR VIA UNN STREAM, permit term to April 30, 2009
HAVEN HUTTERIAN BRETHREN, Dexter: MNG580071, minor permit, discharging to N BR ROOT R VIA DRY RUN CR, permit term to February 28, 2010
HAVEN HUTTERIAN BRETHREN, Dexter: MNG585071, minor permit, permit term to November 30, 2023
PLEASANT VALLEY STATION, Dexter: MN0067717, minor permit, discharging to UNN STREAM, permit term to March 31, 2010

Identity

Facility as filed	DEXTER WWTP
Permittee as filed	Dexter city of
NPDES ID	MNG585228
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	January 1, 2020
Expiration date	November 30, 2023
Issuing agency	STA
Address	Dexter, MN 55926
Subwatershed	Headwaters North Branch Root River (HUC 070400080101)

Effluent limits and exceedances

11Pollutants on file
11Under a numeric limit
1With a violation of any kind
1With 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
Coliform, fecal MPN + membrane ftl 44.5 C	1	1	1	October 31, 2024	2% over the limit
Flow, in conduit or thru treatment plant	9	0	0
Solids, total suspended	5	0	0
BOD, carbonaceous [5 day, 20 C]	5	0	0
pH	3	0	0
Phosphorus, total [as P]	3	0	0
Nitrogen, 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
Oxygen, dissolved [DO]	1	0	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MNG585228.

Inspections

EPA’s inspection file holds no inspection for NPDES MNG585228.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES MNG585228.

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Nearby on the register

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

The page covers the NPDES discharge permit MNG585228 for DEXTER WWTP in Dexter, MN, held by Dexter city of, which is listed as administratively continued and a minor discharger. The facts list 11 pollutants on file, 11 under a numeric limit, and 1 with an effluent exceedance.