Mastermold LLC

What they make

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
AMApplied Molded Products Corporation	Watertown	All Other Plastics Product Manufacturing 326199	◇ UNVERIFIED	3.4 KM
RIReiss Industries INC	Watertown	Polystyrene Foam Product Manufacturing 326140	◐ LIKELY ACTIVE	4.4 KM
MLMastermold LLC	Johnson Creek	Custom Compounding of Purchased Resins 325991	◐ LIKELY ACTIVE	16.2 KM
MLMasterMold LLC Johnson Creek	Johnson Creek	All Other Plastics Product Manufacturing 326199	◐ LIKELY ACTIVE	16.3 KM
Industrial Vacuum Equipment Corporation (ivec)	Ixonia	Commercial and Service Industry Machinery Manufacturing 333310	● ACTIVE	14.7 KM

Every listed plant in Jefferson County

Also at this address

No other federal record shares this street address.

Where this record comes from

1 source holds 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 RCRAINFO, WI-ESR · EPA site type STATIONARY.

• EPA Facility Registry ServiceEXISTENCE
  Record 110002437505 · first seen JUN 2017 · last seen JUN 2024

ALSO RECORDED ASMASTERMOLD

IN JEFFERSON COUNTY6 other plants share this one’s industry (Plastics Product Manufacturing, NAICS 3261); 4 of them have 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: HWY 26-16 · OCT 2026

City

EPA: WATERTOWN · OCT 2026

State

EPA: WI · OCT 2026

County (FIPS code)

EPA: 55055 · OCT 2026

Coordinates

EPA: 43.220322,-88.738213 · OCT 2026

Hazardous waste generator (RCRA)

EPA ECHO: none · OCT 2026