Can you drink the water from saguaro cactus plants?

It probably isn't a good idea to drink the water from the saguaro cactus [Carnegiea gigantea]. A cactus plant tends to store its water in bitter or toxic forms. This discourages predators from raiding precious water supplies. So a wiser choice are the saguaro's fruits, flowers, and seeds as sources of nutrition and water. Particularly the fruits and the seeds are succulent sources of drink and food.