About

The Great Southwestern Illinois Association of Plumbing, Pipefitters, & Steamfitters (GSIA) is a local trade association representing plumbing and mechanical contractors and supporting unions like UA Local 101/360 and Steamfitters Local 439, promoting skilled labor and industry growth in the Metro East region, affiliated with the United Association, the parent organization for plumbers, pipefitters, and steamfitters nationwide. They work with contractors, foster training, and advocate for the plumbing and piping trades, serving areas like Swansea, Collinsville, and St. Louis.