Mastermold LLC

141 Ensch St, Mauston, WI 53948

LIKELY ACTIVELAST SEEN IN FEDERAL DATA DEC 2024 · 3 SOURCES

Operating signal within 24 months, or from a single source.

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What they make

Plastics Product Manufacturing326100

Where it is

43.80340, -90.09968 · CENSUS TIGER

COUNTY

Juneau County

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Other plants nearby

Facility	City	Industry	Status	Distance
Engineered Fiberglass Composites, INC	New Lisbon	All Other Plastics Product Manufacturing 326199	ACTIVE	9.5 KM
Ntm, INC.	Elroy	All Other Plastics Product Manufacturing 326199	UNVERIFIED	15.4 KM
Nuk USA	Reedsburg	Plastics Product Manufacturing 326100	LIKELY ACTIVE	31.8 KM
Cellox LLC	Reedsburg	Plastics Pipe, Pipe Fitting, and Unlaminated Profile Shape Manufacturing 326120	LIKELY ACTIVE	32.2 KM
Primex Plastics Reedsburg	Reedsburg	Plastics Material and Resin Manufacturing 325211	LIKELY ACTIVE	32.3 KM

Every listed plant in Juneau County

Also at this address

No other federal record shares this street address.

Where this record comes from

3 sources hold this plant, and 7 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

EPA cross-references this facility in AIR, EIS, OSHA-OIS, RCRAINFO, TRIS, WI-ESR · EPA site type STATIONARY.

EPA Toxics Release InventoryOPERATING
first seen DEC 2023 · last seen DEC 2024
EPA ECHO compliance recordsOPERATING
first seen OCT 2022 · last seen OCT 2022
EPA Facility Registry ServiceEXISTENCE
Record 110005546356 · first seen JUN 2017 · last seen JUN 2017

IN JUNEAU COUNTY3 other plants share this one’s industry (Plastics Product Manufacturing, NAICS 3261); 1 of them has a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name: EPA: MASTERMOLD LLC · OCT 2026
Street address: EPA: 141 ENSCH ST · OCT 2026
City: EPA: MAUSTON · OCT 2026
State: EPA: WI · OCT 2026
County (FIPS code): EPA: 55057 · OCT 2026
Coordinates: EPA: 43.8034,-90.09968 · OCT 2026
Hazardous waste generator (RCRA): EPA ECHO: VSQG · OCT 2026

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