Patent ID: 8142663

Claim:
An apparatus for the production of potable water comprising: a water pump capable of providing a pump pressure of 4 bars (60 psi) and a flow volume of at least 250 L/hr of raw water; a plurality of ultra filtration units connected in parallel to said water pump having a combined surface area that is effective to urge a filterable flow volume through said ultra filtration units with a pressure loss of at most 7 psi; at least one reverse osmosis unit connected to receive filtered water of the flow volume coming through said ultra filtration cartridge the at least one reverse osmosis unit having a capacity sufficient to allow a first portion of at least 15 percent of the received water to pass through said reverse osmosis unit as purified water with total dissolved solids less than 500 ppm and a second portion of the received water to be separated out as rejected water; a first water outlet connected to said reverse osmosis unit for receiving the purified water at a rate of at least 40 L/hr; and a second outlet connected to an inlet to said reverse osmosis unit for removal of the rejected water.