Keep in mind that about 20% of our total water intake comes not from beverages but from water-rich foods like lettuce, leafy greens, cucumbers, bell peppers, summer squash, celery, berries, and melons.
A healthy body is designed to send thirst signals when the body becomes depleted of fluids. Thirst is the desire to drink, and is not only driven by physiological cues but behavioral cues.