Edwin Pawlowski errs again:

If the pump is totaling 11.5 hp, that is over 36 amps of power at 240 volts.
About 8600 watts at .12 per kW it will cost over a buck an hour to run.

Watts are power, a RATE of energy usage. We pay for energy in kWh.

You need to know the correct weight of the water (have you found that out yet?
it was wrong yesterday) and the number of watts of energy that is equal to.

Whoa!!! :-)

Nick