A questionnaire survey is one of the main tools used to identify gaps between current
water supply services and to investigate user demands in rainwater utilization in the
household sector. Stratified random sampling is a technique applied to design sampling
of households by interview. 300 households in the study area were interviewed with a
structured questionnaire. Out of 300 samples, the number of households surveyed in each
sub-district is then divided to correspond proportionately to its number of households.
The survey is designed to cover residents in every village located in study area. In
addition the survey attempted to target women as far as possible because they are more
involved in housework where water is primarily used.