There are various components that make up water supply and waste removal systems, including pipes, fittings, fixtures, tanks, and connecting pieces. The document then analyzes these components, comparing the material variations, available varieties, market prices, and practical uses of pipes like PVC, ductile iron, cast iron, concrete, and plastic pipes. Major plumbing subsystems include potable water supply, plumbing drainage and venting, and sewage and septic systems, some of which can include hot water recycling and graywater treatment.