treated at the Kitchen Wastewater Treatment Facilities where impurities are removed and biodegraded. Afterwards, water is taken to the Grey Water Production Facilities where it is disinfected and purified through membrane separation and activated carbon absorption, allowing it to be reused as grey water. Grey water produced in this way is reused for flushing toilets in the passenger terminals and NAA Head Office Building. Approximately 210 million liters of grey water was generated from restaurant kitchen wastewater for e¬ffective use in fiscal 2013.