A “drain tile” refers to a system of perforated pipes laid along the foundation, inside or outside. Also known as French drains or perimeter drains, these system channels water away from the home.

A French drain is a ditch in sloped ground, inset with a perforated pipe under a layer of gravel. From the surface, a French drain looks like a rock drainage ditch, and when done well, like a nice ...

The most common in Washington are known as drywells. An injection well is designed and built: Deeper than the largest surface dimension. To contain an assemblage of perforated pipe. As an improved ...