We've already seen that the water in a swimming pool needs to circulate through a filtering system, to remove dirt and debris. During normal operation, water flows to the filtering system through two or more main drains at the bottom of the pool and multiple skimmer drains around the top of the pool.

Where does the water go when you drain a pool?

How do I drain my swimming pool? The first choice for draining swimming pool water should be to drain pool water into the sanitary sewer. In-ground pools typically have a sanitary sewer drainage inlet near the pool equipment.

Can I drain my pool water on the lawn?

A freshly chlorinated pool should not be discharged into the yard; the chlorine is harmful to yard plants and the environment as a whole. Using a test kit, your pool water needs to reflect a certain concentration of chlorine, such as 0.1 ppm (parts per million), before it is safe to drain into your yard.