The network which BESIX Environment designed to supply 90,000 residents in south-eastern Sri Lanka with high quality drinking water comprises: two river water intake points, a water treatment plant with a capacity of 6,000 m³ of potable water a day, a water tower, three underground storage tanks, an office complex and residential buildings, and 100 km of transmission and distribution pipelines. The works spanned 12 different sites across a 300 km² area.