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Clean Water Act discharge permit · NPDES MIS111313

NATIONAL GYPSUM CO-TAWAS CITY, Tawas City, MI: NPDES MIS111313 discharge permit, effluent exceedances, inspections, penalties

NATIONAL GYPSUM CO-TAWAS CITY, held by National Gypsum Company, holds NPDES permit MIS111313, which discharges to Lake Huron. EPA’s file records it issued October 22, 2021 and expiring April 1, 2026. 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.

What the register holds for NATIONAL GYPSUM CO-TAWAS CITY: its NPDES ID, its permit type and status, its dates, its address in Tawas City, Michigan, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MIS111313.

Identity

Facility as filedNATIONAL GYPSUM CO-TAWAS CITY
Permittee as filedNational Gypsum Company
NPDES IDMIS111313
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedOctober 22, 2021
Expiration dateApril 1, 2026
Issuing agencyState
AddressTawas City, MI 48763
Receiving waterLake Huron
Receiving water impaired303(D) Listed
SubwatershedMason Creek-Frontal Lake Huron (HUC 040801010504)

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

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MIS111313.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES MIS111313.

Inspections

EPA’s inspection file holds no inspection for NPDES MIS111313.

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 MIS111313.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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How we handle your data → Privacy

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 MIS111313 there.

Nearby on the register

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

What this page shows

This public-records page covers Clean Water Act NPDES permit MIS111313, held by National Gypsum Company for NATIONAL GYPSUM CO-TAWAS CITY in Tawas City, MI, which discharges to Lake Huron. The register lists the permit status as Effective, with 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.