TTW Public Co. Ltd. engages in the production and sale of treated water. The company is headquartered in Nakhon Pathom, Nakhon Pathom and currently employs 322 full-time employees. The company went IPO on 2008-05-22. The firm produces tap water by pumping raw water from the middle course of the Tha Chin River into the tap water production process at the TTW water treatment plant on the east side of the river at Bang Rakam Sub-District, Banglen District, Nakhon Pathom Province. The company has built a chemical storage building separate from the water treatment plants to store chemicals before they are automatically added into the water production system. The tap water produced from the Banglen water treatment plant is stored in water storage tanks with a capacity of about 30,000 cubic meters, and the tap water at the Krathum Baen water treatment plant is stored in two connected water storage tanks with a capacity of about 25,000 and 20,000 cubic meters. The firm has a raw water and a tap water distribution system.