Special issue of water quality survey the pollution index. In the area of responsibility of the Water Quality Control Division 2 system and water quality control. Waterworks District 10 by checking the water quality index, pollution Basin territory of plumbing parts rubbing region 6 of monitoring all seven parameters, including DO, BOD, COD, phosphate, ammonia, algae and chlorophyll. the OSC found that the raw water through the river basin based on the National Environmental Commission No. 8 (2537) regarding the determination of the sources of surface water quality standards (Type 3) water quality. suitable to be used in the water supply on.