Clean Water Act discharge permit · NPDES MI0039535

MDNR-THOMPSON FISH HATCHERY, Manistique, MI: NPDES MI0039535 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
7Pollutants under a numeric limit
2Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

MDNR-THOMPSON FISH HATCHERY, held by Michigan Department of Natural Resources, holds NPDES permit MI0039535, which discharges to Thompson Creek. EPA’s file records it issued September 29, 2021 and expiring October 1, 2025.

MDNR-THOMPSON FISH HATCHERY, Manistique, Michigan: Individual permit MI0039535, held by Michigan Department of Natural Resources; Administratively continued (past its expiration date and still in force until reissued); issued September 29, 2021, term to October 1, 2025, by State; discharges to Thompson Creek.

Chlorine, total residual: 1 limit, 9 violations of any kind, 4 effluent exceedances, latest April 30, 2024, largest 99,999% over the limit.
Solids, total suspended: 2 limits, 29 violations of any kind, 1 effluent exceedance, latest May 31, 2024, largest 257% over the limit.
Flow, in conduit or thru treatment plant: 2 limits, 84 violations of any kind, 0 effluent exceedances.
Phosphorus, total [as P]: 2 limits, 32 violations of any kind, 0 effluent exceedances.
Outfall observation,visual, y/n response: 1 limit, 30 violations of any kind, 0 effluent exceedances.
pH: 2 limits, 23 violations of any kind, 0 effluent exceedances.
Formaldehyde: 2 limits, 9 violations of any kind, 0 effluent exceedances.
BOD, carbonaceous [5 day, 20 C]: 0 limits, 5 violations of any kind, 0 effluent exceedances.

September 21, 2025: Reporting Violations - Late Submittal of DMRs (ST6).
May 21, 2023: Reporting Violations - Late Submittal of DMRs (ST6).
November 21, 2020: Reporting Violations - Late Submittal of DMRs (ST6).
October 21, 2020: Reporting Violations - Late Submittal of DMRs (ST6).
September 21, 2020: Reporting Violations - Late Submittal of DMRs (ST6).
August 21, 2020: Reporting Violations - Late Submittal of DMRs (ST6).
July 21, 2020: Reporting Violations - Late Submittal of DMRs (ST6).
May 7, 2017: Monitoring Violations - Improper Analysis or Lab Error (ST6).
May 6, 2017: Monitoring Violations - Improper Analysis or Lab Error (ST6).
April 30, 2017: Monitoring Violations - Improper Analysis or Lab Error (ST6).
April 29, 2017: Monitoring Violations - Improper Analysis or Lab Error (ST6).
April 23, 2017: Monitoring Violations - Improper Analysis or Lab Error (ST6).
April 22, 2017: Monitoring Violations - Improper Analysis or Lab Error (ST6).
April 16, 2017: Monitoring Violations - Improper Analysis or Lab Error (ST6).
April 15, 2017: Monitoring Violations - Improper Analysis or Lab Error (ST6).

Other permits held by Michigan Department of Natural Resources

MDNR-ODEN FISH HATCHERY, Alanson: MI0035726, issued September 13, 2013
MDNR-HARRIETTA FISH HATCHERY, Harrietta: MI0035742, issued September 18, 2019
MDNR-PLATTE RIVER HATCHERY, Beulah: MI0035769, issued October 27, 2020
MDNR-NUISANCE PLANT, Lansing: MIG031030, issued April 20, 2017
MDNR-FOREST CANOPY, Lansing: MIG033003, issued April 20, 2017
MDNR-SLEEPY HOLLOW STATE PARK, Laingsburg: MIG580290, issued August 26, 2021
MDNR-PORCUPINE MOUNTAINS WILDERNESS STATE PARK, Ontonagon: MIG580313, issued September 12, 2023
MDNR-TAHQUAMENON FALLS SP WWSL, Paradise: MIG580373, issued August 4, 2015

MDNR-THOMPSON FISH HATCHERY among its neighbors

EPA’s permit file holds 1 discharge permits in the Southtown Creek-Frontal Lake Michigan subwatershed (HUC 040301120101), MI0039535 among them. Its county holds 3, 2 of them major permits; MI0039535 is a minor permit.

Identity

Facility as filed	MDNR-THOMPSON FISH HATCHERY
Permittee as filed	Michigan Department of Natural Resources
NPDES ID	MI0039535
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	September 29, 2021
Expiration date	October 1, 2025
Issuing agency	State
Address	Manistique, MI 49854
Receiving water	Thompson Creek
Subwatershed	Southtown Creek-Frontal Lake Michigan (HUC 040301120101)

Effluent limits and exceedances

8Pollutants on file
7Under a numeric limit
8With a violation of any kind
2With 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
Chlorine, total residual	1	9	4	April 30, 2024	99,999% over the limit
Solids, total suspended	2	29	1	May 31, 2024	257% over the limit
Flow, in conduit or thru treatment plant	2	84	0
Phosphorus, total [as P]	2	32	0
Outfall observation,visual, y/n response	1	30	0
pH	2	23	0
Formaldehyde	2	9	0
BOD, carbonaceous [5 day, 20 C]	0	5	0

Inspections, violations and enforcement

15Single-event violations

Date	What EPA recorded	Agency
September 21, 2025	Reporting Violations - Late Submittal of DMRs	ST6
May 21, 2023	Reporting Violations - Late Submittal of DMRs	ST6
November 21, 2020	Reporting Violations - Late Submittal of DMRs	ST6
October 21, 2020	Reporting Violations - Late Submittal of DMRs	ST6
September 21, 2020	Reporting Violations - Late Submittal of DMRs	ST6
August 21, 2020	Reporting Violations - Late Submittal of DMRs	ST6
July 21, 2020	Reporting Violations - Late Submittal of DMRs	ST6
May 7, 2017	Monitoring Violations - Improper Analysis or Lab Error	ST6
May 6, 2017	Monitoring Violations - Improper Analysis or Lab Error	ST6
April 30, 2017	Monitoring Violations - Improper Analysis or Lab Error	ST6
April 29, 2017	Monitoring Violations - Improper Analysis or Lab Error	ST6
April 23, 2017	Monitoring Violations - Improper Analysis or Lab Error	ST6
April 22, 2017	Monitoring Violations - Improper Analysis or Lab Error	ST6
April 16, 2017	Monitoring Violations - Improper Analysis or Lab Error	ST6
April 15, 2017	Monitoring Violations - Improper Analysis or Lab Error	ST6

Inspections

EPA’s inspection file holds no inspection for NPDES MI0039535.

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 MI0039535.

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

This public-records page covers Clean Water Act discharge permit NPDES MI0039535, held by Michigan Department of Natural Resources for MDNR-THOMPSON FISH HATCHERY in Manistique, MI, which discharges to Thompson Creek in the Southtown Creek-Frontal Lake Michigan subwatershed (HUC 040301120101). The permit is listed as administratively continued, with 8 pollutants on file, 2 of them under a numeric limit and 7 with an effluent exceedance.