BEHRAMPORE, 16 JUNE: The adage that necessity is the mother of invention is apt for Kajisha, a gram panchayat at Beldanga in Murshidabad.

The gram panchayat, with a cluster of villagers, has turned out to be a rare bit of rural Bengal by setting a precedence: to rope in a band of rickshaw-van pullers for supplying pure drinking water on demand to households determined to drink arsenic-free wate