Bi-State Fire Protection is a fire sprinkler contractor based in St. Charles, Missouri, serving the St. Louis region. It handles design, engineering and consulting, fabrication, new installation, retrofits, inspection, testing and maintenance, and it offers a 24-hour repair service. Its projects include institutional buildings, sports venues, residential buildings, manufacturing, retail, offices, warehouses, healthcare and underground installations. The firm employs union sprinkler fitters and holds an Illinois State Fire Marshal Fire Sprinkler Contractor licence (FSC0027).