text:  visit mcdoors.com. Poston & Son Plumbing salutes our American veterans and thanks them for their service. This message from Poston & Son Plumbing at 7181 Pittman Drive in Michigan City, your Indiana licensed plumbing contractors. Highly skilled so you get the job done right the first time. Their goal is your full satisfaction. For all your residential and commercial plumbing needs, call 219-871-9795 for Josh and Sarah Poston at