Pools & Spas

You can be water efficient and still enjoy these great leisure activities if you follow a few simple water conservation guidelines.

Preventing Water Evaporation

Evaporation is a major cause of water loss from your swimming pool. It is important to remember that the evaporation rate is highest in the early evening as the air cools and the water remains warm.

This can be reduced by covering the pool's surface. Covering the pool lowers the pool's temperature, decreasing evaporation whilst preventing debris from falling on the pool surface.

Ways to Prevent Evaporation

Pool Blankets

An affordable pool cover option, pool blankets are available in bubble plastic or foam and float on the water's surface. If used with a roller they can be easily removed before pool use, then spread again after you have finished swimming for the day.

Pool Covers

These are generally more expensive than pool blankets as they require a roller for storage and take some effort to roll out and put away.

They have an added safety benefit as it is difficult to fall into the pool when the cover is in place. They also cover the whole pool, preventing up to 95 per cent of evaporation, compared with a blanket where there may be gaps between a blanket and the edge of a pool.

Increase Shade

Covering your pool with a shade will further reduce evaporation as well as protecting swimmers from the sun. Use shade cloth or a shade sail.

  • Frequently Asked Questions

    • What are ‘liquid pool covers’?

      Answer

      These are a new alternative available if you don't want to hide your pool water with a cover or blanket.

      The chemical forms a barrier on the water's surface which inhibits evaporation by up to 40 per cent. It can either be added to the pool daily by hand or by using an automatic metering system.

    • Can you save water by preventing evaporation from your pool?

      Answer

      You can, and windy areas contribute to more evaporation. To reduce water loss,use a pool cover and adjust the landscape around your pool with walls and hedges that create shelter from the wind.
    • Can I top up my pool with rain water?

      Answer

      Yes. Installing a rainwater tank is a great way to reduce the use of mains water in your swimming pool.

      Rainwater diverters are an inexpensive alternative to installing a tank. They attach to a downpipe and can be used to divert rainwater into your swimming pool.

      In large downpours, you will need to monitor the water level in your pool so that it does not overflow. You should consult a plumber about stormwater diversion.