From its early days Boon Rawd has been committed to environmentally sound business practices and has made substantial investments over the years in environmental management. The group was the industry's pioneer in operating a highly efficient waste water treatment facility to minimize adverse environmental impact on the Chao Phraya River, the lifeline of the Kingdom. The waste water flows from the brewery to the equalization tank where it is stirred continuously to prevent sedimentation. Waste water is then further treated in the aeration tank where oxygen stimulates the growth of aerobic bacterial to decompose the remaining substances before being transferred to the sedimentation tank.
Clear water is separated and pumped into an intermediary pond.
After property testing to ensure compliance with governmental regulations, it is released into the Chao Phraya River. Beside its release into the river, treated water is used to water the plants within the brewery compound as well as to clean the ground surface. The remaining mixture in the sedimentation tank is transferred to the sludge thickener to remove additional water. The remaining sediments are then treated by a sludge dewatering device which extracts the last bit of water from the mixture. The residue is then disposed of either as fertilizer or as other marketable products.