Pride Plumbing came out and repiped and replaced the drain lines under the house in the crawlspace, going to a) the fixtures in the kitchen (sink and dishwasher) and one bathroom (sink, toilet, and bathtub/shower - replacing the toilet bowl's flange and wax seal gasket and the P-traps underneath all the sinks); and b) the washing machine - installing new PVC piping, fittings and supports under the house for each fixture.