High Quality Content by WIKIPEDIA articles! Simplified sewerage is a low-cost sewer system that collects all household wastewater (WC wastes and sullage) in small-diameter pipes laid at fairly flat gradients. Simplified sewers are laid in the front yard or under the pavement (sidewalk) or - if feasible - inside the back yard, rather than in the centre of the road as with conventional sewerage. It is suitable for existing unplanned low-income areas, as well as new housing estates with a regular layout. With simplified sewerage it is crucial to have management arrangements in place to remove blockages, which are more frequent than with conventional sewers.