When considering each water station, the Shrine-pump station and Klong Sansab should be carefully monitored in summer because BOD values were highest 7.0 mg/L in November 2009 and 6.6 mg/L in May 2010, respectively for both locations (Fig. 2a and 2b). On the other hand, Lam Kunchoo and Don Lanam village should be closely monitored in the rainy season due to high BOD value of 6.1 mg/L and 7.8 mg/L, respectively in August 2010 (Fig. 2c).