Many people might not be aware of the fact that only 75% of water is actually “wet” according to the DLS (Douglas Liquidity Scale). The other quarter falls under “hard” or “rough”.
Hard water has high mineral content and it’s formed when “wet” water percolates through deposits of limestone and chalk which are largely made up of calcium and magnesium carbonates. Objects submerged in hard water become hard themselves and not wet.
“Rough” water is the toughest water of all which makes up less than 1% of all water supplies. This type can be found mostly in the Sahara desert and it’s not recommended for camel consumption.