1.5 Assume that the average water usage of the Ermelo community is approximately 130 litres per person per day. After the municipality implemented water saving practices, the average water usage dropped to 87 litres per person per day. A 10 mega litres per day (MLD) wastewater treatment plant is used for which 60% of the flow is residential wastewater. Calculate the water savings in litres per day (L/day) and the percent reduction in water usage