Nagaoka International Corporation

Nagaoka is proud to be the leading engineering and consulting firm providing total solutions for water intake, purification and treatment. Our groundwater intake technology is the standard in Japan and our biological groundwater treatment can remove high-concentration iron, manganese and ammonia nitrogen; and is beneficial for rural or small-scale waterworks services for sustainable supply of safe drinking water. Our new technology for high-speed sub-seabed infiltration system will bring high efficiency, cost-saving and environmentally friendly processes in seawater intake. Nagaoka’s continuous challenge and technology development contributes to the world of water.