Water is, of course, an essential nutrient for all animals, including ruminants like sheep. Good quality water is a very important factor for sheep health and for sheep business profitability as well. When calculating your sheep water consumption needs, you have to take into consideration their age, condition (gestation, sickness, etc.), and weather conditions on your farm.
In general, sheep require 4 – 6 liters (1 – 1.5 gallons) of water per day. They require more if in late gestation or lactating. If you’re going for a really rough estimate, then calculate needed water for hot days on a basis that your sheep need up to 10 percent of their body weight per day.