Dwarves that live in mountains would have soft water. That's why Scottish water is soft. Granite for days! Dwarves that lived in karsts would have hard water. Hard water is dissolved limestone*. Here's a book about an underground civilisation in Suffolk. www.goodreads.com/book/show/16...
Downs-Lord Dawn (The Downs-Lord Triptych, #1)A 17th-century curate, James Blades, finds himself tran…www.goodreads.com