NJS Co., Ltd., together with its subsidiaries, primarily engages in construction consultancy business in Japan and internationally. It is involved in the water and industrial water supply, sewerage, river, and agricultural drainage and wastewater treatment; financial management consultancy of water supply and sewerage; raw sewerage and waste treatment facilities surveying; and seismic diagnosis plan and supervision activities. The company also provides consulting services for water quality management and maintenance of water and sewage treatment plants, pumping stations, etc.; asset management services for social infrastructure; and disaster prevention investigation, countermeasures, and planning for inundation, earthquakes, etc. In addition, it develops systems, including GIS information systems for pipelines, rivers, and purified water tanks; facilities information system for water and sewage treatment plants, pumping stations, and tunnels; ASPs; and account processing systems, billing and collection systems, and others. Further, the company is involved in the planning, design, and supervision of buildings and seismic diagnostic activities; administration of water supply and sewerage projects; and overseas consulting activities. Additionally, it undertakes environmental basic planning and impact assessment works; investigation, analysis, and contamination analysis services of rivers, wetlands, lakes, and sea areas; and surveying and geological survey works. The company was formerly known as Nippon Jogesuido Sekkei Co., Ltd. and changed its name to NJS Co., Ltd. in April 2015. NJS Co., Ltd. was incorporated in 1951 and is headquartered in Tokyo, Japan.