If you own a household with a pool or spa you can reduce the amount of water lost to evaporation by covering your pools and spas when not in use. This will help keep your pool clean, keep the water warmer and save you from topping up the pool/spa as often.
Check out the rebate available for pool/spa covers.
Other top tips for pools and spas are:
Make sure you check the current water restrictions covering the use of pools and spas.