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Clean Water Act discharge permit · NPDES MI0050598

UM BIOLOGICAL STATION, Pellston, MI: NPDES MI0050598 discharge permit, effluent exceedances, inspections, penalties

UM BIOLOGICAL STATION, held by University of Michigan Biological Station, holds NPDES permit MI0050598, which discharges to Maple River. EPA’s file records it issued September 17, 2018 and expiring October 1, 2021. 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 filedUM BIOLOGICAL STATION
Permittee as filedUniversity of Michigan Biological Station
NPDES IDMI0050598
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedSeptember 17, 2018
Expiration dateOctober 1, 2021
Issuing agencyState
AddressPellston, MI 49769
Receiving waterMaple River
SubwatershedMaple River (HUC 040700040207)

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

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
pH2502July 31, 2008
Flow, in conduit or thru treatment plant2460
Phosphorus, total [as P]0240
Outfall observation,visual, y/n response1230
Nitrogen, ammonia total [as N]0160

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

DateWhat EPA recordedAgency
October 21, 2025Reporting Violations - Late Submittal of DMRsST6
July 21, 2025Reporting Violations - Late Submittal of DMRsST6
June 21, 2025Reporting Violations - Late Submittal of DMRsST6
May 21, 2025Reporting Violations - Late Submittal of DMRsST6
December 21, 2024Reporting Violations - Late Submittal of DMRsST6
October 21, 2024Reporting Violations - Late Submittal of DMRsST6
June 14, 2024Monitoring Violations - Improper Analysis or Lab ErrorST6
February 21, 2024Reporting Violations - Late Submittal of DMRsST6
August 21, 2023Reporting Violations - Late Submittal of DMRsST6
December 21, 2022Reporting Violations - Late Submittal of DMRsST6
August 25, 2021Monitoring Violations - Improper Analysis or Lab ErrorST6
August 24, 2021Monitoring Violations - Failure to Monitor for Non-Toxicity RequirementsST6
January 21, 2020Reporting Violations - Late Submittal of DMRsST6
August 21, 2019Reporting Violations - Late Submittal of DMRsST6
July 29, 2019Management Practice Violations - Failure to Maintain RecordsST6
January 21, 2019Reporting Violations - Late Submittal of DMRsST6
August 21, 2018Reporting Violations - Late Submittal of DMRsST6
May 21, 2018Reporting Violations - Late Submittal of DMRsST6
July 21, 2017Reporting Violations - Late Submittal of DMRsST6
February 21, 2017Reporting Violations - Late Submittal of DMRsST6

Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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, MI0050598.

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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 MI0050598 there.

Nearby on the register

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