MUMBAI, April 14 -- After the indefinite withdrawal of services called by tanker operators in opposition to the revised guidelines of the Central Ground Water Authority (CGWA), and to avert any disruption in essential water supply during summer, the BMC on Sunday invoked the Disaster Management Act, 2005. Exercising powers under Sections 34(a) and 65(1) of the Act, the civic body is set to requisition private water tankers, wells and borewells within municipal limits....