We are on our way to Jai Hind camp, home to about 1,200 families in the south of Delhi, India. Here, more than anywhere else in the Indian capital, life revolves around water. Tankers carry water to the camp seven times a day and, until recently, filling up a couple of 50-litre tanks was an ugly game, explains Kaur, who works with the Forum for Organised Resource Conservation and Enhancement (Force), a charity trying to improve sanitation and access to clean water in India.

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