Clean Water Act discharge permit · NPDES MIS211139

TPI POWDER METALLURGY, St. Charles, MI: NPDES MIS211139 discharge permit, effluent exceedances, inspections, penalties

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

TPI POWDER METALLURGY, held by TPI Powder Metallurgy, holds NPDES permit MIS211139. EPA’s file records it issued May 23, 2017 and expiring April 1, 2022. 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	TPI POWDER METALLURGY
Permittee as filed	TPI Powder Metallurgy
NPDES ID	MIS211139
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	Not a publicly owned treatment works
Issued	May 23, 2017
Expiration date	April 1, 2022
Issuing agency	State
Address	St. Charles, MI 48655
Subwatershed	Lower Beaver Creek (HUC 040802030311)
Other EPA IDs (FRS)	RCRA handler MID002935872

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES MIS211139.

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

1Single-event violations

Date	What EPA recorded	Agency
April 25, 2022	WW Storm Water Non-Construction - Failure to develop any or adequate SWPPP/SWMP	ST6

Inspections

EPA’s inspection file holds no inspection for NPDES MIS211139.

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 MIS211139.

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

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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 MIS211139 there.

Nearby on the register

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

This public-records page covers NPDES permit MIS211139, held by TPI Powder Metallurgy in St. Charles, MI, which EPA's file lists as administratively continued with a minor discharger class. The page reports 0 pollutants on file, 0 under a numeric limit, and 0 with an effluent exceedance, and it sits within the Lower Beaver Creek subwatershed (HUC 040802030311).