How much water does a horse drink daily? Earn the Horse Health Badge at Mane-U! 1. How much water does a horse drink daily? 6 – 8 quarts 60 – 70 gallons 10 – 12 gallons 2 – 4 pints Loading… Share this:ShareFacebookTwitterPinterestLinkedIn Related Related posts: 5 wound questions that could save your horse T/F Horses can eat pumpkin? How long is the horse’s small intestine? White line disease affects what part of the horse?