Advantages
- As they require little or no mechanical power, chemicals or replaceable parts, and they require minimal operator training and only periodic maintenance, they are often an appropriate technology for poor and isolated areas.
- Slow sand filters, due to their simple design, may be created diy. DIY-slow sand filters have been used in Afghanistan and other countries to aid the poor.
- Slow sand filters are recognized by the World Health Organization, Oxfam, United Nations and the United States Environmental Protection Agency as being superior technology for the treatment of surface water sources. According to the World Health Organization, "Under suitable circumstances, slow sand filtration may be not only the cheapest and simplest but also the most efficient method of water treatment."
Read more about this topic: Slow Sand Filter
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