Filtering water bottle

Abstract

A portable, personal apparatus for treating drinking water comprises a generally tubular or cylindrical filter housing containing filtration media and water-permeable screen or mesh or felt or membrane or netting layer at the top and bottom ends of the filter. The design of the apparatus involves the bottle exterior and interior contouring to the filter and enables the efficient and rapid gravity flow of water in through the filter. The apparatus may be configured such that water is first passed through a top reservoir designed to receive water, followed by a porous mesh, followed by granular filtration and antimicrobial media agitated by turbulent motion of influent water, followed by a porous mesh before reaching a durable and reusable water containment vessel.

1 .- 22 . (canceled) 
     
     
         23 . A portable, reusable apparatus for treating drinking water, comprising:
 a bottle having a mouth;   a filter housing including a water filter and a reservoir, the filter housing configured to be removeably and sealingly attached to the mouth of the bottle; and   a cap configured to sealingly close the reservoir of the filter housing.   
     
     
         24 . The apparatus as claimed in  claim 23 , wherein the filter housing and the bottle are threadably attached. 
     
     
         25 . The apparatus as claimed in  claim 24 , wherein the cap and the filter housing are threadably attached. 
     
     
         26 . The apparatus as claimed in  claim 23 , wherein in the filter is configured to filter water entering and exiting the bottle when the filter housing is attached to the bottle. 
     
     
         27 . A portable, reusable apparatus for treating drinking water, comprising:
 a generally cylindrical bottle having a mouth;   a generally cylindrical filter housing including a water filter and a reservoir, the filter housing configured to be threadably attached to the mouth of the bottle, the water filter being configured to reduce at least one contaminant conforming to the NSF/ANSI 42 standard as water passes through the water filter and into the bottle at a flow rate of at least approximately 0.5 Lpm; and   a cap configured to threadably close the reservoir of the filter housing.