Hydrotek Public Company Limited and its subsidiaries are engaged in the construction and management of water treatment, wastewater treatment, and waste management systems in Thailand, as well as the sale of related supplies. Its offerings include engineering, procurement and construction (EPC), operation and maintenance, and water operator services for water and wastewater treatment plants. The company also provides solutions for water treatment, desalination, solid waste treatment, and wastewater treatment plants. Hydrotek Public Company Limited was incorporated in 1982 and is headquartered in Pathum Thani, Thailand.