Whitewater is one of the five kingdoms during the war against Herobrine's Army. It was mentioned in The Haunting 3: Legend of Herobrine (Part 4) and is situated somewhere in what is now known as the Badlands.
It was said to be the third strongest of the kingdoms. After the two weaker kingdoms fell, its armies united with the other remaining two to fight against Herobrine's Army in the Valley of Stoneheim and were defeated. The kingdom itself was Herobrine's first target after that, and was completely destroyed along with Algaria.