The primary source of moisture for the local water supplies is

1 potential evaporation and transpiration

2 actual evaporation and transpiration

3 ground water storage
4 precipitation

3 answers

This depends on the locality. In my town, it is well water, but in the next largest city, it is from a lake (precipation runoff)
do you have any idea what is it in Penfield, NY?
www.ijc.org/fr/activites/losl/documents/2008_05_27_Herman_2.pdf