Found these items when doing an inspection the other day. Who said you can’t use PVC and abs together. Try using plastic electrical conduit and PVC. If the pipe doesn’t fit tight use more glue. The other two pictures indicate using irrigation pipe on the drain lines. Then look at the plastic water line bent around the sewer line. The TPR Valve extension was reduced in size because that all he had. All of the water lines in the house are 1/2" plastic pipe.
This house was built in 2002. I don’t even want to show what the electrical system was like.
Never know about the do-it- yourself net work.
Lynn W. Gerving