The Hyderabad Water Tankers Association called off its strike and resumed supplies after agreeing to source borewell water from outside the ORR with necessary permissions. Hydraa said it would continue efforts to curb illegal commercial groundwater extraction in high-demand localities. Hyderabad: Hyderabad Water Tankers Association has called off its strike and resumed supplies after operators agreed to draw borewell water only from outside the ORR, Hydraa Commissioner A V Ranganath said on.