The cleaning action of soap will be the most in the water obtained from the source:
(a) Tap (b) Rain (c) Well (d) Hand pump
Rain water
Kindly refer to the following link:
https://www.meritnation.com/ask-answer/question/list-the-sources-of-hard-water-and-soft-water-separately/science/4145342
Kindly refer to the following link:
https://www.meritnation.com/ask-answer/question/list-the-sources-of-hard-water-and-soft-water-separately/science/4145342