... technologies used to treat drinking water in residential applications, it has the greatest range of contaminant removal. Reverse osmosis ... lead, manganese, mercury, nitrate, selenium, silver, sulphate, and zinc. It is also effective with asbestos, many taste, color and odor ... (as used in our systems), additional treatment can also be provided for such "volatile" contaminants (VOCs) as: benzene, MTBE, ...