The HMWSSB will begin supplying treated wastewater for non-potable uses from November 1, prioritising civic bodies, government agencies and public spaces. Green water tankers will serve industrial, construction and gardening needs, with registrations and filling points being arranged. Hyderabad: The HMWSSB on Friday announced that treated water from sewage treatment plants (STPs) would be supplied from November 1 for non-potable uses, with priority given to the GHMC, other municipal corporations, HMDA, government.