To save water, the Brihanmumbai Municipal Corporation will not give a no objection certificate (NOC) for the construction of new buildings, which do not have dual flushing or manual control cocks in its toilets.The BMC had made it compulsory for all new buildings coming up in the city to have dual flush valves and manually controlled cocks installed for their toilets, a rule the builders were following. Now, the BMC has also incorporated it in eco-housing projects. To implement it stric…