Williams Plumbing & Heating was founded and incorporated in 1981 by Ken Williams. Williams Plumbing is one of the largest mechanical and utility contractors in Montana with projects ranging up to $4 million. Williams Plumbing operates in a three-state region with 170 employees in several divisions. They include commercial, utilities, process piping, heating and residential. Williams has extensive experience with state and local government projects; industrial and commercial buildings, such as motels, convention centers and apartment complexes; residential buildings; and subdivisions. The company regularly provides commercial, industrial and residential plumbing and heating repair, installations and maintenance work. It also handles HVAC repair, fire sprinkler installation, sewer rehabilitation/replacement, wastewater treatment and installation of snow melt systems.