Question

It is best to say that efficient plumbing _______.
a.
reduces water pollution by using less water
b.
reduces water pollution by using cleaner water
c.
increases water pollution by using more water
d.
reduces water pollution by using dirty water

Answer 1

a. reduces water pollution by using less water

Efficient plumbing conserves water, which lowers the volume of wastewater needing treatment and reduces pollutant discharge, thereby helping reduce water pollution.