Darco Water Technologies Limited, an investment holding company, designs, builds, operates, and maintains water and wastewater treatment systems. It operates through three segments: Engineered Environmental Systems, Water Management Services, and Trading. The Engineered Environmental Systems segment designs, fabricates, assembles, installs, and commissions engineered water systems for industrial applications. The Water Management Services segment services and maintains water and wastewater treatment plants. The Trading segment engages in the trading and supply of chemicals, electrical controls, and related instruments, which are used in water treatment systems. The company also designs and supplies environmental related equipment, centralized vacuum systems, refuse conveying systems, and other engineering systems; trades in industrial water treatment equipment and spare parts; designs, installs, sets up, and maintains industrial waste treatment plant ultra-pure systems; and tests wastewater and processed water, as well as renders other related waste treatment plant services. In addition, it provides integrated engineering solutions for water purification, water supply, and wastewater treatment; and related consultancy and industrial services, as well as solid waste disposal treatment and incineration services. Further, the company designs, fabricates, and constructs pure and wastewater treatment plants; trades in vacuum cleaning systems and related services, as well as engages in the provision of noise and vibration prevention engineering; soil pollution control engineering; and environmental monitoring system. It serves electronics, power plants, petrochemicals, textiles, palm oil mills, refineries, solar/photovoltaics, pharmaceuticals, and food and beverage industries in Singapore, Malaysia, the People's Republic of China, Vietnam, and internationally. The company was founded in 1999 and is headquartered in Singapore.