A regional water agency is required to provide a water supply to two new urban release areas (i.e. Chapel Hill and Waverly Park) to serve 7000 equivalent tenements (ET) as shown in Figure 1. Your consultancy firm of hydraulic engineering designers has been given the task of performing a preliminary engineering design of the proposed new works as shown in the accompanying schematic diagram. Potable water supplies to the new urban areas will be sourced from the existing local regional single-pipe supply system. The non-drinking water networks are to be used for toilet flushing, car washing, and garden watering and will be boosted systems fed from a new 4ML excavated in- ground Class A reclaimed water store located in the wastewater treatment plant (WWTP) at J.

Supply from reservoir R is of poor quality (i.e. turbidity 10-15 NTU, true colour 15-30 HU, and minor taste and odour problems) but has the capacity to meet the additional demands of the new release areas. Wastewater from the new, predominantly residential, developments will be piped to the WWTP. The WWTP currently produces Class B effluent that is discharged to a downstream sewage treatment plant via an outfall sewer and will need to be upgraded with additional appropriate advanced water treatment facilities.

The designs of the distribution pipes, service storages, and pump stations are to be based on the typical maximum day demand patterns given in the Hydraulic Engineering Notes (and provided here in Figures 2 and 3) and the additional data provided below.