Clean Water Act discharge permit · NPDES MI0035742

MDNR-HARRIETTA FISH HATCHERY, Harrietta, MI: NPDES MI0035742 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
7Pollutants under a numeric limit
1Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

MDNR-HARRIETTA FISH HATCHERY, held by Michigan Department of Natural Resources, holds NPDES permit MI0035742, which discharges to Slagle Creek. EPA’s file records it issued September 18, 2019 and expiring October 1, 2023.

MDNR-HARRIETTA FISH HATCHERY, Harrietta, Michigan: Individual permit MI0035742, held by Michigan Department of Natural Resources; Administratively continued (past its expiration date and still in force until reissued); issued September 18, 2019, term to October 1, 2023, by State; discharges to Slagle Creek; Finfish Farming and Fish Hatcheries.

Solids, total suspended: 2 limits, 23 violations of any kind, 1 effluent exceedance, latest October 31, 2001, largest 33% over the limit.
Phosphorus, total [as P]: 5 limits, 157 violations of any kind, 0 effluent exceedances.
Flow, in conduit or thru treatment plant: 2 limits, 24 violations of any kind, 0 effluent exceedances.
Outfall observation,visual, y/n response: 1 limit, 20 violations of any kind, 0 effluent exceedances.
pH: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Formaldehyde: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Chlorine, total residual: 1 limit, 0 violations of any kind, 0 effluent exceedances.

March 21, 2025: Reporting Violations - Late Submittal of DMRs (ST6).
April 21, 2024: Reporting Violations - Late Submittal of DMRs (ST6).
January 21, 2024: Reporting Violations - Late Submittal of DMRs (ST6).
August 21, 2023: Reporting Violations - Late Submittal of DMRs (ST6).
February 21, 2023: Reporting Violations - Late Submittal of DMRs (ST6).
June 21, 2022: Reporting Violations - Late Submittal of DMRs (ST6).
December 21, 2021: Reporting Violations - Late Submittal of DMRs (ST6).
September 21, 2021: Reporting Violations - Late Submittal of DMRs (ST6).
June 21, 2020: Reporting Violations - Late Submittal of DMRs (ST6).
May 21, 2017: Reporting Violations - Late Submittal of DMRs (ST6).

Other permits held by Michigan Department of Natural Resources

MDNR-ODEN FISH HATCHERY, Alanson: MI0035726, issued September 13, 2013
MDNR-PLATTE RIVER HATCHERY, Beulah: MI0035769, issued October 27, 2020
MDNR-THOMPSON FISH HATCHERY, Manistique: MI0039535, issued September 29, 2021
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-HARRIETTA FISH HATCHERY among its neighbors

EPA’s permit file holds 8 discharge permits in the Slagle Creek subwatershed (HUC 040601030307), MI0035742 among them. Its county holds 7, 1 of them major permits; MI0035742 is a minor permit.

Other permits in the Slagle Creek subwatershed (HUC 040601030307)

HARRIETTA HILLS LLC TF, Harrietta: MI0043541, minor permit, permit term to October 1, 2015
KAPPEN TREE SERVICE-NUISANCE PLANT, Cass City: MIG031092, minor permit, permit term to February 1, 2022
MASON-LAKE CD-FOREST CANOPY, Scottville: MIG033014, minor permit, permit term to February 1, 2027
MDHHS EMERGENCY MOSQUITO CONTROL, Statewide: MIG030016, minor permit, permit term to February 1, 2027
QUALITY TREE SERVICE-NUISANCE PLANT, White Cloud: MIG031100, minor permit, permit term to February 1, 2027
RIGHT OF WAY MGMT-NUISANCE PLANT, Statewide: MIG031098, minor permit, permit term to February 1, 2027
USFWS - MI NAT. WILDLIFE REFUGE-NUISANCE PLANT, Statewide: MIG031094, minor permit, permit term to February 1, 2027

Identity

Facility as filed	MDNR-HARRIETTA FISH HATCHERY
Permittee as filed	Michigan Department of Natural Resources
NPDES ID	MI0035742
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 18, 2019
Expiration date	October 1, 2023
Issuing agency	State
Address	Harrietta, MI 49638
Receiving water	Slagle Creek
Receiving water impaired	303(D) Listed
Subwatershed	Slagle Creek (HUC 040601030307)
NAICS	112511 – Finfish Farming and Fish Hatcheries
SIC	0921 – Fish Hatcheries And Preserves
Other EPA IDs (FRS)	RCRA handler MIR000008805

Effluent limits and exceedances

7Pollutants on file
7Under a numeric limit
4With 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
Solids, total suspended	2	23	1	October 31, 2001	33% over the limit
Phosphorus, total [as P]	5	157	0
Flow, in conduit or thru treatment plant	2	24	0
Outfall observation,visual, y/n response	1	20	0
pH	2	0	0
Formaldehyde	2	0	0
Chlorine, total residual	1	0	0

Inspections, violations and enforcement

10Single-event violations

Date	What EPA recorded	Agency
March 21, 2025	Reporting Violations - Late Submittal of DMRs	ST6
April 21, 2024	Reporting Violations - Late Submittal of DMRs	ST6
January 21, 2024	Reporting Violations - Late Submittal of DMRs	ST6
August 21, 2023	Reporting Violations - Late Submittal of DMRs	ST6
February 21, 2023	Reporting Violations - Late Submittal of DMRs	ST6
June 21, 2022	Reporting Violations - Late Submittal of DMRs	ST6
December 21, 2021	Reporting Violations - Late Submittal of DMRs	ST6
September 21, 2021	Reporting Violations - Late Submittal of DMRs	ST6
June 21, 2020	Reporting Violations - Late Submittal of DMRs	ST6
May 21, 2017	Reporting Violations - Late Submittal of DMRs	ST6

Inspections

EPA’s inspection file holds no inspection for NPDES MI0035742.

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 MI0035742.

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

This public-records page covers Clean Water Act discharge permit NPDES MI0035742, held by Michigan Department of Natural Resources for MDNR-HARRIETTA FISH HATCHERY in Harrietta, MI, which discharges to Slagle Creek within subwatershed HUC 040601030307. The permit is listed as administratively continued, with 1 pollutant under a numeric limit and 1 pollutant with an effluent exceedance, and it was issued September 18, 2019 with an expiration date of October 1, 2023.