This paper concerned the environmental pollution of water used for Pangasius farming. Principally, pond must be located and constructed to minimize negative impacts on the other users and the environment. Particularly, the main environmental concerns in the Pangasius farming sector are the waste-water released from the farm to river. Therefore, the water in pond farming has to be taken care of and cleaned. Generally, if the Pangasius farmers pay much more attention to waste-water treatment before discharging to the river, they will avoid the problem of a polluted water source