PROFICIENT H2O

water purification units and apparatus; water conditioning units and apparatus; water softening units and apparatus; water filtering units for domestic and commercial use; water treatment units and apparatus, namely, water softeners, water filters, reverse osmosis filtration units, ultraviolet sterilization units; cartridge filtration units; water treatment equipment, namely, carbon filtration units, ion exchange units, [ dealkalizers, ] and units for reducing or removing [ chlorines, ] tannins [, nitrates, arsenic, radium, and other organic contaminants ] from water