Ask This Old House — Episode 17: Soil Test; Water Supply Pipes

You are watching the episode Soil Test; Water Supply Pipes Landscape contractor Roger Cook heads to Oregon to help a homeowner improve her lawn, starting with a simple soil test. Next, Roger, along with host Kevin O'Connor, general contractor Tom Silva and plumbing and heating expert Richard Trethewey ask, "What is it?" Then, Richard and Kevin visit a local home center to identify several different types of water supply pipes.