Abstract: A portable water treatment device comprising an outer shell having a substantially flat bottom and a plastic inner liner, wherein the outer shell and the plastic inner liner together define an internal chamber having a first end for influent of a water source and a second end for effluent of treated water. The device also comprises a porous underdrain positioned near the bottom of the internal chamber; a filter bed comprising sand, and a Schmutzdecke formed within the flexible shell on or within the filter bed opposite the porous underdrain. Other embodiments include water treatment methods.

Abstract: The present invention is uniquely engineered and provides water treatment devices for treatment of water in a small community or individual who are out of reach of access to safe water for domestic use, reach of adequate resources and reside in rural setting. Water treatment device of the invention are flexible, light weight and have high capacity.

Abstract: The present invention is uniquely engineered and provides water treatment devices for treatment of water in a small community or individual who are out of reach of access to safe water for domestic use, reach of adequate resources and reside in rural setting. Water treatment device of the invention are flexible, light weight and have high capacity.