There is no need to purchase bottled water, which is expensive; you 
can store your own fresh drinking water for purposes 
of drinking in vertical storage tanks. Pipes and fittings are often made of 
the same base material such as copper, steel, polyvinyl 
chloride (PVC), and chlorinated polyvinyl chloride (CPVC).
Today there are various insulation materials that are used directly over the exterior 
of the tire before the finish is applied.