Profile: Excel Waters specializes in offering water treatment & purifying products and services. Our products include water softeners, reverse osmosis systems, demineralization plant, window cleaning, UV systems, filtration & cartridge systems, iron & maganese filtration and tanks, pumps & dosing equipments. Reverse osmosis systems provide water in constant supply, its simple water is forced through a semi-permeable membrane which rejects all unwanted impurities. The membrane will only allow pure water molecules to flow through, resulting in all contaminants including bacteria, chemicals and heavy metals being removed and flushed to waste. If a solution of salts in water is separated from a source of pure water by a semi-permeable membrane, the tendency of the pure water is to pass through the membrane to try and dilute the salt solution which forces pure water through the membrane, thereby concentrating the salt solution.