The potential for reusing grey water and its generation rates for sustainable potable water security in Kuwait

This study was conducted to achieve the following objectives: (1) to investigate the water consumption patterns of Kuwaiti households, (2) to determine the per use water consumption rate for plumbing fixtures and their frequency of daily use and (3) to estimate the amount of grey water generated per person per day to explore the potential for reusing grey water in Kuwait. To achieve these objectives, a preliminary study was conducted to determine the per use water consumption rate for each plumbing fixture. An intensive study was then conducted using data from 53 households in different districts in Kuwait. The average daily freshwater consumption rate per person was found to be 283 L, half of which was converted to grey water. Reuse of grey water could reduce the freshwater consumption and hence wastewater treatment by 72.73 million imperial gallons per day (MIGD), which could lead to a savings of KD 87.6 (US $318.55) million from the annual freshwater production budget and between KD 15.93 (US $57.92) and KD 27.08 (US $98.46) million from the annual wastewater treatment budget.