Plastic water tanks or polyethylene water tanks are specially designed to store water, available in many styles and capacities to fit for large and small storage spaces. Whether you need to collect rain water or to store drinking water, plastic water tanks are a perfect solution.Polycom Plastics, polyethylene water tanks supplier, UAE s the leading manufacturer and supplier of polyethylene water tanks, GRP water tanks, GRP septic tanks, GRP portable toilets, GRP canopies, GRP decorative items and road barriers.