Chemistry is a branch of physical science that studies the composition, structure, properties and change of matter.
Daily water consumption varies quite a bit. Season of the year, workload, reproductive status, diet, and climate factor into the volume of water needed by a particular horse on a specific day. As a starting point, the average horse drinks between 5 and 10 gallons (19 and 38 liters) of water each day. The horse may need slightly less if it is grazing lush pasture because fresh grass contains a high percentage of liquid.
After exercise or a long trailer ride: 1  Offer your horse sips from a five-gallon bucket of water that has had one ounce of table salt added. This will encourage him to drink additional amounts of plain water in the next 20 to 30 minutes.  Make sure the first few sips of water are not ice cold.