Eastern Water Resources Development and Management Public Co (East Water) plans to build two new pipelines to meet growing demand for raw water in the Eastern Economic Corridor (EEC) area.
The two pipelines are the Nong Pla Lai-Nongkor-Laem Chabang pipeline and the Map Ta Phut-Sattahip pipeline, with a total length of 120 kilometres.
A pumping station is designed to have a capacity of 350,000 cubic metres per day.
"Once the new pipelines are completed and linked with existing pipelines, they will comprise the largest water grid in Asean with a length of 512km, linking with water sources in the eastern region and two river basins in four provinces," said Cherdchai Pitiwacharakul, president and chief executive of East Water.
He said the new water pipelines are crucial for infrastructure development in the EEC area, which is expected to become a high-tech industrial hub.
East Water wants to ensure sufficient water for factories in the short, medium and long term as the corridor grows, said Mr Cherdchai.
The company has many sources that supply raw water to factory operators. They include Nongkor reservoir, Dok Krai reservoir, Nong Pla Lai reservoir, Prasae reservoir, Bang Phra reservoir, and raw water from the Bang Pakong River.
Raw water from East Water is currently supplied to the Eastern Airport City, located in the compound of U-tapao airport, and the Eastern Economic Corridor of Innovation in Wang Chan district in Rayong province.
The pumping capacity is currently more than 30 million cubic metres a day, which will be increased to 37 million cubic metres in the future, Mr Cherdchai said.