A 15 million-gallon water treatment plant coming up in Garden Reach promises to ease water woes of Behala, Thakurpukur and the adjacent localities. The Calcutta Metropolitan Water and Sanitation Authority (CMWSA) project is expected to be ready in a year and a half. Jamshedpur Utility Service Company will execute the project with funds sanctioned under the Jawaharlal Nehru National Urban Renewal Mission, said a CMWSA official. The project cost has been estimated at Rs 140 crore, with an initial allotment of Rs 30 crore to begin work.