Western Production

The RSC- Western Production (RSC-WP) currently operates and maintains Eight (08) drinking Water Treatment Plants (WTP) at Ambatale, Labugama, Kalatuwawa, Biyagama, Bambukuliya, Kandana, Kethhena and Nawagamuwa (Chico) of which Ambatale WTP is the largest facility producing nearly 550,000 m3/day. The Ambatale WTP alone produces nearly 45 % of the total production of RSC- Western Production. The total production of RSC – Western Production was increased to 1.27 million cubic meters of drinking water per day since November-2020 with the commissioning of the KRB II project which has the capacity of 180,000 m3/day. RSC- Western Production produces more than 50 % of the total production of NWSDB per day. The Operation and Maintenance Managers report to the DGM through the AGM and all RSC functions are monitored by the Additional General Manager for Western Zone. The RSC provides services to the regional offices only within their capacity, any additional help as necessary is obtained from the Head Office (HO) through the respective Additional Manager Managers. The RSC Western production caters drinking water to Colombo, Gampaha and part of the Kalutara districts. Water is being distributed through Three (03) RSCs called Western Central, Western North and Western South. The operation and maintenance activities of RSC-WP are divided among four managers (Manager- Operation, Manager-Kandana, Manager –Biyagama, Manager -Maintenance) to ensure a safe and uninterrupted supply of water. Three water treatment plants namely Ambatale, Biyagama and Bambukuliya have acquired ISO 9001-2015 Quality Management System certification. Ambatale laboratory has upgraded the ISO 17025 -2005 accreditation to ISO 17025 -2017 accreditation following the recertification audit by Sri Lanka Accreditation Board (SLAB) held in January 2021.