Which body organ has the lowest percentage of water content?

1. Water content varies widely by organ and tissue type. 2. The brain and kidneys have the highest water content, at 80-85 percent of their mass. 3. Teeth are mineralised, dense structures with very little free water. 4. Teeth at only 8-10 percent water, the lowest of any tissue listed. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 26 "Fluid, Electrolyte, and Acid-Base Balance", p.1248 §Body Water Content_