California residents usually do one of the following things with their pools during the winter:
- They winterize their pools by cleaning them, balancing the water chemistry, inspecting the equipment, covering them, and adding a freeze protector1. This is done to protect the pools from freezing temperatures, save on maintenance costs, and preserve the pool condition for spring2.
- They keep their pools open and running, but reduce the pump run time and the chlorine level. This is done to enjoy the pool year-round, especially if they have a pool heater or a solar cover.
- They drain their pools completely, which is not recommended because it can cause damage to the pool shell and the plumbing system due to the water pressure and the soil conditions in California3.