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. i always check 100 yard upstream to see if any dead animals are dead in the water.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.
The technology for water to go bottles was originally designed for NASA. From It merges 3 different systems of technologies and this combination was perfect result for outdoors and travel as all contaminant are filtered to 99.9% which is a stunning achievement.Water to go bottles use this technology to provide clean water almost anywhere in the World and can help to reduce damage to the environment.After investing and testing the company launched a new 50cl bottle for everyday use for anyone wishing to use filtered water rather than buying expensive bottled water. The company has grow every year and now has a 75cl water to go bottle and this is used extensively around the world by charities and aid foundations.