Directions should be followed precisely to avoid injury when performing this procedure. If you do not completely understand how to perform the procedure, please call a professional. Lead and Copper Lead and copper may be detected in drinking water due to the plumbing in private homes and businesses. The older the plumbing, the more likely traces of these elements will be found. The copper is a result of the copper pipes and the lead comes from the lead solder used to connect the pipes.
Stagnant water is more likely to be contaminated due to longer exposure to the plumbing materials.
Plastic PVC pipes are the safest choice to use in plumbing because they are composed of synthetic materials which are not dissolvable. If possible, all copper and lead pipes should be replaced with plastic fixtures. If this is not a feasible option for you, then flushing your pipes would be very beneficial. A good rule of thumb when performing this procedure is to run the water through the pipes until the temperature remains constant. When the water's temperature becomes stable and cool then water has come from a main water line and not just the household plumbing.