Want to preserve the quality of your pool's water? Then do one simple task every day: check and empty the strainer baskets. Strainer baskets are usually located in the pool deck. Most have a liftoff plastic lid and a removable plastic strainer basket inside. Remove the basket and shake out the debris, which can range from elastic hair bands to toads, depending on your pool users and locale. Keeping the baskets clean aids in water circulation and lessens the amount of chlorine that will be required.