Determine the annual energy, water, and cost savings associated with replacing an existing showerhead (having a water flow rate of 2.5 gpm) with a low-flow showerhead (1.6 gpm). An electric water heater is used for DHW heating with an efficiency of 95 percent. The temperature of the showerhead water is 110°F. The inlet water temperature for the heater is 55°F. The showerhead use is 10 minutes per shower, 2 showers per day, and 300 days per year. Assume that the electricity price is $0.07/kWh and that the combined water and wastewater cost is $4/1,000 gallons.