Thai Tap Water Supply Public Company Limited is tap water producer and distributor in Nakhon Pathom and Samut Sakorn areas for the Provincial Waterworks Authority, to replace tap water production from the PWA's groundwater wells and to increase tap water production volume to accommodate consumers demand so as to help alleviate land subsidence problems and saltwater penetration in accordance with the governmental policy. Pathum Thani Water Co., Ltd., the company's subsidiary, is engaged in the same business in Pathum Thani Province. Wikipedia