... :Reverse Osmosis (RO) provides the finest level of water purification available. Our Reverse Osmosis purification systems ... , it has the greatest range of contaminant removal. Reverse osmosis allows the removal of particles as small as ... trichloroethylene, trihalomethanes, and radon. Essentially, reverse osmosis is capable of rejecting bacteria, salts, sugars, proteins, particles, dyes, heavy ...