Can drinking a lot of water cause somewhat soft stools?

Hydration: Drinking water is essential to keep health bowel movements. The bowel usually absorbs the water it needs from the stool. If you drink too little water, this can make the stool too dry and hard to pass. If you drink enough, stools should pass smooth sailing, generally speaking. Other factors related to constipation and loose stools as well. If concerned, see your doctor.