<p><span style="font-family: georgia, 'times new roman', times, serif; font-size: 15px; line-height: 22px; ">As evening falls in Chuddani, a village of about 500 homes, people arrive by bicycle, motorbike, tractor and on foot with jugs that they fill with water from faucets outside a neat blue shed. Inside the building is a filtration plant that cleans the local groundwater of chemicals, toxins and bacteria.