The project to test the strength of the tank with water (Hydroatatic Test) pressure 9 kg / cm2-g and test with the wind (Pneumatic Test) pressure 6.0 kg / cm2-g. Wastewater from test are sent to the clarifier left to check the quality. Was not exceeding the East Industrial Property (map TA phut) scheduled to drain into the trough paint water of the estate wastewater system to central estate.