KATHMANDU, Dec. 6 -- A processing plant with the capacity to treat 15 million litres of water per day is under construction to clean the Tukucha rivulet, which flows through central Kathmandu, before discharging the treated water into the Bagmati River.

The treatment centre is being built across 2.53 hectares at Tripureshwor in Kathmandu and Kupandol in Lalitpur. Constructed under the Asian Development Bank (ADB)-funded Bagmati River Basin Improvement Project, the facility is being built at a cost of Rs 3.18 billion through a concessional loan.

Construction of the plant is targeted for completion by mid-December next year. Once operational, the Tukucha stream will be diverted to the centre for treatment and then released into the Bagmat...