An investigation on the effect of improper drainage system at residential area in Klang Valley / Norhidayu Zailan

Drainage system is a basis infrastructure when planning and designing a housing area or to develop any area. It must be design properly so that it may perform it function efficiently in irrigate surface runoff from its catchment to the nearby main drainage system and forward discharges water to the adjacent river. It also must meet the economic factor in two aspect which is its construction and maintenance cost. The rapid development of Malaysia such as urbanization recently contributes to the increasing on pollution thus increases the leavings into the existing drainage system. The volume of surface runoff will increase due to the huge runoff coefficient of that area and flash flood happen due to the existing drainage system can no longer hold its function and irrigate the high volume of runoff water to the nearby river. There are three objectives of this study which is to identify the current issues and problems which occur on the current system of drainage at the residential area. The second objective is to investigate the effect of improper drainage to the house owner at the selected area. The third objective is to give suggestion and recommendation on the effective drainage system at the residential area. The target groups of this case study is a house owner where the case study area is limited to Klang Valley and the type of housing selected is a terraced house. The study was carried out by three methods which is interviewing, distributing questionnaire and observing the selected area. From the study, the existing drainage still uses the conventional method that will bring many effects to the residential area. The use of Urban Stormwater Management Manual are still new and their implementation need to be consider as a current approach that will bring benefit to the our country.