Along Klong Saen-Saeb are numbers of communities. Together, they consist of (to be advised) residents. Most of these residents came from upcountry to Bangkok for work as Bangkok is the main central business district (CBD) of Thailand. So, with huge numbers of people in a limited area, the areas around Klong Saen-Saeb are turned into slums. These inhabitants have long used the water for bathing, washing, drinking and transportation. Unfortunately, most of them are low-educated. So, they have little awareness towards the health of Klong Saen-Saeb.