Due to the water scarcity, the Nepal Drinking Water Supply Corporation (NDWSC) has scheduled a "load-shedding' for water supply in the taps of Kathmandu. Morning, afternoon and evening are scheduled for different areas to get their water supply. Every area has its turn once in two days, for about an hour. Today, the city's daily water demand is around 170 million litres, but only 90 million litres are available, according to the NDWSC. An estimated 40 per cent of the city's water supply is lost through leakage. No significant addition has been made in the water pool since 1980, while the population of Kathmandu is growing at an annual rate of 14.6 per cent. Every year the daily water demand goes up by eight million litres of water.