In the Ambrose household, there are five people. Each person has one shower each day and each shower uses 110 L of water. Water costs $2.57 per kilolitre (kL)

Question

a) How much is the annual water bill for the Ambrose’s showers?

b) If the Ambrose family install a water-efficient showerhead that uses 60% less

water, how much will the family save on water costs each year?

Answer 1

a) How much is the annual water bill for the Ambrose’s showers?

# Family        # Showers /   H2O L /   Days /     H2O $         H20 $

 Members      Person / Day   Shower    Year        / KL       / L

     5                 1            110        365      $2.57    $2.57/1000

1000 liters in a Kiloliter

Answer: $515.93

b) If the Ambrose family install a water-efficient showerhead that uses 60% less

water, how much will the family save on water costs each year?

Reduce costs by 60% driven by 60% lower usage.

$515.93 x .6 = $309.56