About Us For well over half a century, the Downing family has provided NW Indiana and NE Illinois with top notch plumbing service. Beginning with my grandfather and continuing with his sons and grandsons, the Downing family has carried on throughout the years handing down the wealth of expertise and knowledge that so many years of experimentation and fine tuning can provide. Each generation building on the tricks of the trade taught by the generation before. 3G Plumbing is a local family owned and operated business. We carry on the family plumbing business tradition and the heritage of honest, quality workmanship.