Nihon Suido Consultants Co., Ltd. provides construction consulting services for water supply and sewerage infrastructure in Japan and internationally. Its consultancy services include arrangement, investigation, research, planning, design, construction supervision, facility operation, management, diagnosis, water quality inspection, economic and financial analysis, water supply, sewerage, industrial water supply, flood control, water utilization, and environmental management of rivers, lakes, marshes and coastal waters, treatment of industrial wastewater and waste, architecture, urban and regional development, agricultural development, renewable energy. The company was incorporated in 1959 and is headquartered in Tokyo, Japan.