Useful resource for Water chemistry and composition

[Hoddy]

I happen to stumble across this article on a website from a pro brewers group and thought it would be useful as a reference resource on water chemistry for brewing and treatment methods and calculations.

https://hopdoctor.co.uk/2022/01/06/...0uzR2tlMgAmX0QX4YSlSqnFi0qiLXfO80oTcraA271iv0