Hydrotek Public Company Limited, together with its subsidiaries, engages in the construction and management of water treatment and wastewater treatment system, waste management system, and selling of related supplies in Thailand. It offers engineering, procurement and construction, operation and maintenance, water operator of water treatment plant and wastewater treatment plant, and water operator solutions. The company also provides water treatment, desalination, solid waste treatment, and wastewater treatment plant solutions. Hydrotek Public Company Limited was incorporated in 1982 and is headquartered in Pathum Thani, Thailand.