Pride Plumbing came out and installed a new PVC drain line for a Whirlpool washing machine because its terracotta drain piping had been compromised by roots. Since the original drain line was in a slab, after installing the piping behind the washer, we ran the new PVC line outside the wall and down into the main line running into the septic tank. We ran the new drain line down the wall, turned it towards the main highway, and then tied into the septic tank main line. We also ensured that it was California vented.