Wastewater Management Authority

Ministry of Natural Resources and Environment

333 LaoPengNguan Tower 1,  Floor 23,  Viphawadee Rangsit Road, Jomphol, Chatuchak, Bangkok 10900

Tel: 0-2273-8530-39  Fax 0-2273-8577  E-mail: wastewtr@wma.or.th