Why is the water from Siruvani dam called 'Worlds 2nd tastiest water'? [closed]

This question was asked on Quora, where someone has explained:

The Guinness Book of World Record for the 'Sweetest Tasting Water in the World' goes to Tomalistis Falls in the Caibiran municipality of Biliran, Philippines. You can read more about it here - Taste the sweetest water at Tomalistis Falls

But, note that I wasn't able to find a reference from Guinness itself.

What I found after a long search. (Thank you for your valuable comments).

Softness/Sweetness of water is based upon the mineral content in it. Lesser the salt and mineral content in the water, sweeter/softer the water is. Commonly, water bodies close to a water fall have sweet water because deposition of soil in such water bodies is the least.

As we all know, no one can practically measure the taste of water from all the water bodies on earth, and compare them.

Now, although Siruvani reservoir is widely claimed to have the second sweetest water in the world. But I was not able to find any official source for this claim. And the Guinness Book of World Record for the 'Sweetest Tasting Water in the World' goes to Tomalistis Falls in the Caibiran municipality of Biliran, Philippines.

Thanks to Quora :)