6. Result
The surface water quality and water quality index (WQI) in the Suan Luang Sub – district municipality are shown
in table 2. The results found that the water quality of the 15 villages in this area were 47.48 – 58.72 (mean = 54.28
± 3.45). According to the values of WQI, the surface water quality in the Suan Luang Sub – district municipality
may be classified as bad.