Drinking sufficient levels of fluid on a daily basis is an important part of kidney health. Dehydration, especially chronic dehydration, results in the production of urine which has a higher concentration of minerals and waste products.This can lead to the formation of crystals which can affect kidney function and contribute to certain kidney diseases, such as kidney stones.

The Natural Source Waters Association https://naturalsourcewaters.org.uk/  have produced a fact sheet about "Hydration and Kidney Health" and you can view that PDF by clicking > Here