Portable water filters
Portable water purification filters are small hand held devices that can be used survivalists. Military and anyone who wants clean drinking water from lakes rivers and rain water or where you think the water is not clean. These filters and tablets render untreated water from unsafe to safe and palatable drinking water.These water filters will treat safe water and clean out chemical additives such as chlorine and bad tastes but mostly as they are small can be use in remote areas.
You maybe in an area that has lots of water but it can be polluted with sewage , run-off or pollution from factories. Even small burns and streams can be contaminated by waste from animals that can happen far upstream.
In many parts of the World including the UNITED KINGDOM water can be polluted by bacteria or parasites from human and animal waste.
Bacteria and water filters
Strains of E coli bacteria survive for a short time outside the body and will infect new hosts.
Cryptosporidium spp or Guardia lamblia will cause diarrhoea in some areas they are present and a water filter is essential for backpackers. Microscopic larvae can also be present and if ingested they can become deadly and cause serious damage to the body.