Twin State INC

What they make

Where it is

Other plants nearby

Every listed plant in Rock County

Also at this address

No other federal record shares this street address.

Where this record comes from

3 sources hold this plant, and 6 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 EIS, ICIS, NCDB, SSTS, 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 JUN 2019 · last seen JUN 2019
• EPA Facility Registry ServiceEXISTENCE
  Record 110000419743 · first seen JUN 2017 · last seen JUN 2017

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: TWIN STATE INC · OCT 2026

Street address

EPA: 3631 POLZIN RD. · OCT 2026

City

EPA: JANESVILLE · OCT 2026

State

EPA: WI · OCT 2026

County (FIPS code)

EPA: 55105 · OCT 2026

Coordinates

EPA: 42.72694,-89.12168 · OCT 2026