Slow Sand Filters
If you surface water sources for household use, slow sand filtration – or more accurately biologically activefiltration – may be an effective choice…
filter
Acid-neutralizing Filters
Acid-neutralizing filters are used to reduce water acidity. They add crushed calcite or some other carbonate-based mineral at controlled rates to raise the…
Gravity Fed Water Treatment System – Mod 1
Impact, 2007 James A. Marusek Water is essential to sustain human life. In many types of disasters, access to clean drinking water may…
Home Made Berkey Water Filter
Daire – 22 January 2008 http://www.alpharubicon.com/kids/homemadeberkeydaire.htm I have a large family and our current home does not afford us much space for water…