In a large stockpot, bring the water to a boil over high heat. Add all of the ingredients, cover the pot, and allow the water to return to a boil. Reduce the heat to a simmer, adjust the cover so it is slightly cracked, and simmer the stock for 5 hours.
Turn off the heat and let the stock cool in the pot. Strain the stock through a fine-mesh strainer into clean containers to store for l