Eastern Water Resources Development And Management PLC is a Thailand-based water utilities company. The company develops and manages major water distribution pipeline systems in the Eastern Seaboard area of Thailand. It also supplies raw water and produces and supplies tap water. Operating through its various subsidiaries, the company constructs raw water transmission systems to transport water to the industrial sector, integrating the eastern coastal area into the main industrial zone of Thailand. The company derives the majority of its revenue from its Raw Water Business.