Patent ID: 9475717
Filing Date: 2016-10-25
CPC Classification: C02F

Claim Text:
1. A method for reducing or preventing Legionella bacterial contamination of a water supply system comprising: a) passing a fluid through a water softening component; b) passing the effluent from a) through a carbon filtration component; c) passing the effluent from b) through a reverse osmosis component, wherein a storage vessel is not employed between steps a) and c); d) passing the effluent from c) through a water storage vessel, wherein the water storage vessel is airtight except for a microporous vent filter on said water storage vessel; and e) passing the effluent from d) through a recirculating pump that delivers a minimum of 3 feet per second flow velocity and that circulates water in a continuous cycle from said storage vessel, through an ultraviolet light, through a final filter, and to a distribution piping, wherein water not distributed to a point of use via said distribution piping is returned to said storage vessel.