Rooftop farming (RTF) has been introduced in Kathmandu as an
alternative solution to managing urban waste and wastewater through
recycling and reusing organic waste and grey water generated at
household level since RTF was initiated by the Kathmandu Metropolitan
City (KMC) with technical support of development agencies -
Environment and Public Health Organization (ENPHO) and Institute
for Social and Environmental Transformation Nepal (ISET-Nepal). This
study has been carried out to estimate the potential rooftop area available
for rooftop farming in KMC. Also, this study estimates a total volume
of compost that can be generated from organic waste and the current
demand of compost for rooftop farming. The study shows that 34% of
the households in KMC are practicing some form of kitchen gardening
and rooftop farming. Hence, it was assumed that these households will
culturally accept RTF and thus total rooftop farming area in KMC was
estimated to be 5.7 sq. km. Similarly, the total demand of compost
manure for rooftop farming is 63.3 tons per day which equates to 40%
of potential compost generation from organic waste of Kathmandu.
Grey water generated at household level can be effectively and efficiently
applied for watering crops.