Drop the magnet down the tube with its flat sides facing up and down. Hold the copper pipe the same way and drop the magnet just the same. The magnet will fall straight down the plastic pipe and ...

Use a magnet. If the magnet sticks, the pipe is not lead. If the magnet does not stick, scratch the pipe with a penny. If it turns copper-colored, it’s safe. If it scratches gray or chalky, it’s lead.

A copper pipe is a reddish-brown color ... Another way to know if you have a galvanized pipe is to bring a fridge magnet with you. If the magnet sticks to the pipe, it's galvanized.