Drinking water available to rural communities in many developing countries contains disease germs.\r\nSolar disinfection of water is becoming increasingly appreciated because of the feasibility of its\r\napplication. This study investigated the level of transmission of ultraviolet light by bottles made of\r\nglass, poly vinyl chloride (PVC) and polyethlene terephthalate (PET) in relation to their ability to\r\ndisinfect water samples in them; two brands of PET bottles, Ragolis and Voltic, were used. Ragolis\r\nbottle was the best both in ultraviolet light transmission and microbial inactivation. There was no\r\nmicrobial re-growth during 11 weeks storage of solarââ?¬â??treated water. Rural dwellers in Nigeria have easy\r\naccess to large quantities of used PET bottles and can use the 1.5 L size to produce solar-disinfected\r\nwater for drinking.
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