Practical to carry, cheaper than bottles, and readily available, small disposable water sachets have become an integral part of life in Senegal. They are also a key contributor to plastic waste marring the West African nation's streets and coastlines. "Before, we used to worry about rubbish, but now it's the sachets of water" says Pape Diop, head of an environmental protection association. IMAGES AND SOUNDBITES ARRANGED IN SEQUENCES N°33VL4VW