What is the ruling on using sun heated water and solar heaters?

Question 6: Is using sun heated water and solar heaters permissible in Islaam?

Answer: All Praise is due to Allaah alone and peace and blessings be upon His Messenger, his family and Companions. To commence: We do not know of any authentic evidence that prohibits the use of water heated by the sun… read more here.

What is the preponderant opinion on the issue of water?

Question 1: What is the preponderant opinion on the issue of water? Please clarify the issue in detail.

Answer: All Praise is due to Allaah Alone and peace and blessings be upon His Messenger, his family and Companions. To commence:

The basic ruling on water is that it is Taahir (ritually pure). If its color, taste, or odor changes due to being mixed with a Najaasah (ritual impurity), it will be considered to be Najis (ritually impure), whether the amount is small or large. However, if the Najaasah does not alter it, it will be considered as Taahir… read more here.