Darco Water Technologies Limited, an investment holding company, provides engineering, and water and wastewater treatment solutions in Singapore, Malaysia, the People’s Republic of China, and Vietnam. It operates through Projects, and Operations and Maintenance Services segments. The Projects segment designs, fabricates, assembles, installs, and commissions engineered water systems for industrial applications; and provides engineered vacuum solution and service concession. The Operations and Maintenance Services segment services and maintains water and wastewater treatment plants, and water supply, as well as trades and supplies of goods comprising chemicals, electrical controls, consumables, and related instruments used in water treatment systems.