Eastern Water Resources Development & Management Public Company Limited operates in the Sewerage systems sector. Eastern Water Resources Development and Management Public Company Limited is a Thailand-based company engaged in the integrated water businesses. The Company's principal activities are the development and management of the water distribution pipeline systems in the Eastern seaboard areas of Thailand, as well as the procurement of raw water from government agency sources for commercial distribution to end users. It provides two types of constructed wetlands: free water surface (FWS) wetlands, which is used to improve sewage water treated in a stabilization pond, and wetland and vegetated submerged bed (VSB), which is used to protect wastewater from insects or animals and prevents contamination caused by pathogenic microbes. As of December 31, 2010, it had four subsidiaries including, Universal Utilities Company Limited, Chachoengsao Water Supply Company Limited, Bangpakong Water Supply Company Limited and Nakornsawan Water Supply Company Limited. In our complete report available for purchase the company is compared to: Thai Tap Water Supply Public Company Limited, Tianjin Capital Environmental Protection Group Company Limited and Tianjin Capital Environmental Protection Group Company Limited.