Greywater from household kitchens and bathrooms in S.M. Gollahalli flows into the open stormwater drains that traverse this village in the outskirts of Bengaluru. Livestock waste from facilities near these houses flush into the same drainage network. Adding to this potent mix is stormwater runoff. These drains lead away from the habitation to nearby fields, where some of the wastewater is diverted into small collection ponds — farmers use this water to irrigate and fertilise their land. The rest of the water continues to flow through ditches and feeds into rajakaluves that winds up in the Arkavathy river.