The relationship between horsepower and pumping is given by the following equation: hp =...

The relationship between horsepower and pumping is given by the following equation: hp = (gpm x ft of water)/(3960 x pump efficiency). Power, in kilowatt hours (kWh), is equal to 0.749 times hp. Energy costs $0.15 per kWh For a 1-mgd filtration facility, calculate the annual cost of pumping based on the least operating pressures listed in Table 13-1.