Darco Water Technologies Ltd. is an investment holding company, which engages in the construction and management of water treatment systems. It operates through the following segments: Engineered Environmental Systems (EE Systems); Waste Management Services (WM Services); and Trading. The EE Systems segment designs, fabricates, assembles, installs, and commission engineered water systems for industrial application. The WM Services segment repairs and maintains product water and wastewater systems. The Trading segment markets and distributes chemicals, electrical controls, and related instruments used in water treatment systems. The company was founded by Swee Heng Teh in 1999 and is headquartered in Singapore.