Water purifying units for potable water for domestic, commercial, and industrial use; Water sanitizing apparatus and devices for potable water or for treating wastewater for domestic, commercial, and industrial use; Water treatment devices for potable water or for treating wastewater for domestic, commercial, and industrial use; Water sanitizing apparatus and devices used to dissolve ozone into water for use in washing machines, dishwashers, cooling towers, swimming pools, decorative water fe...