72 страниц. 2013 год. LAP Lambert Academic Publishing Water has become a valuable commodity in the ever crowded world. In fact, access to fresh water as the UN anticipates will be among the most difficult challenges in the upcoming years. There are various methods of abstracting fresh water but they tend to be overcomplicated and massively expensive. In this project, I present a relatively simple yet cost-effective technique by using membrane filters. These techniques can be particularly helpful in developing countries with growing populations and limited resources.