Safe drinking water is often taken for granted, yet in many parts of the world reliable supplies of clean water are at a premium. In many circumstances a piped supply is not available and surface water from rivers, streams or water holes present the only source of water. In this case the water may appear unclear and have an unpleasant taste, but more importantly is often a source of disease. Even clear and apparently fresh water may be polluted with disease causing pathogens. Gravity Feed does the job when a main water supply is not available. Great for weather disasters, RV's, campers. Quick assembly - telescopes for easy transportation. To use, simply fill the top container with raw water. Draw off filtered water from the lower container spout and use for drinking, cooking, rinsing, etc. Supplies thousands of gallons of filtered drinking water. Ceramic Filter with Granular Activated Carbon: --Removes parasites, i.e. cryptosporidium and giardia >99.99% --Absolute filtration efficiency at 0.9 microns - 99.999% --For particles sized 0.5 - 0.8 microns the reduction is >99.9% --Silver baked into ceramic inhibits the growth of bacteria --Reduces turbidity greater than 99.69% --Granular Activated Carbon reduces chlorine, bad taste & odor --The ceramic filter is cleanable to extend the life of the filter --Lightweight and easy to assemble --Portable, may be used as a travel filter.