Didion & Sons Foundry CO

What they make

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
Precision Components & Assemblies, INC	Saint Peters	Steel Foundries (except Investment) 331513	● ACTIVE	1.5 KM
HMHitchiner Manufacturing Company	Ofallon	Nonferrous Metal Foundries 331522	◐ LIKELY ACTIVE	5.1 KM
O'fallon Casting, L.l.c.	O Fallon	Aluminum Foundries (except Die-Casting) 331524	● ACTIVE	5.1 KM
MIMp Industries, INC.	O'fallon	Iron Foundries 331511	◐ LIKELY ACTIVE	6.4 KM
SLSt. Louis Diecasting	Bridgeton	Concrete Block and Brick Manufacturing 327331	◐ LIKELY ACTIVE	13.6 KM

Every listed plant in St. Charles County

Also at this address

No other federal record shares this street address.

Where this record comes from

2 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, AIRS/AFS, EIS, MO-DNR, OSHA-OIS, RCRAINFO, TRIS · EPA site type STATIONARY.

• EPA Facility Registry ServiceEXISTENCE
  Record 110011076183 · first seen FEB 2026 · last seen FEB 2026
• EPA ECHO compliance recordsOPERATING
  first seen DEC 2025 · last seen DEC 2025

IN ST. CHARLES COUNTY6 other plants share this one’s industry (Foundries, NAICS 3315); 3 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: DIDION & SONS FOUNDRY CO · OCT 2026

Street address

EPA: 4894 N SERVICE RD · OCT 2026

City

EPA: ST. PETERS · OCT 2026

State

EPA: MO · OCT 2026

County (FIPS code)

EPA: 29183 · OCT 2026

Coordinates

EPA: 38.8009,-90.604118 · OCT 2026

Hazardous waste generator (RCRA)

EPA ECHO: none · OCT 2026