Aqueous Pools Inc.

Minimizing Swimming Pool Evaporation

Posted on: August 25th, 2011 by Dave No Comments

While you might think that you lose more water doing the belly-flop into your swimming pool, a lot of water is actually lost due to evaporation, especially during the summer months.  For a medium-sized pool, evaporation can add up to 200-300 gallons per week, or between 2% and 5% of swimming pool volume.

This article discusses some of the reasons why swimming pool water evaporates and offers some recommendations on how to minimize water loss.

Factors that Influence Pool Water Evaporation

There are numerous factors that impact the rate and amount of swimming pool evaporation:

  • Wind speed and frequency;
  • Sun exposure;
  • Pool water temperature;
  • Aeration from other water features like waterfalls and fountains; and
  • Relative air humidity.

While it makes sense to think that most pool evaporation occurs in the summer months, evaporation is actually higher in the fall months. This is because water temperatures are still high but air temperatures have cooled off considerably. The water practically gets sucked right out of the pool by the cool air.

Pool Covers

One of the best ways to slow the pool evaporation process — not to mention conserve energy and heat your pool with the sun’s rays rather than your pool heater — is to use a pool cover or a liquid pool cover. Thermal pool covers come in all sizes and thicknesses. You can opt for more expensive pool covers that are automated and use a machine to install and retract the covers from the surface of the water.

However, the more affordable pool covers are the ones you take on and off yourself, which are available in standard sizes and then can be cut to fit the shape of your pool and spa. Thermal pool covers are relatively low cost and offer exceptional value for what they deliver in energy, evaporation, and utility bill savings.

One unique product on the market today is the liquid pool cover. It doesn’t have to be removed prior to swimming, and you do not have to struggle with reinstalling it after you are done in the pool. This product conforms to any type of pool size or shape. The other benefit is that a liquid pool cover appears to be effective, does not give off any odor and does not f eel strange on the skin when swimming. Manufacturers also claim that it is non-hazardous and completely safe for swimmers. Requiring only about four ounces per week for the average size pool, the other perk is that it can be a very cost-effective solution.

Other Ideas for Minimizing Pool Evaporation

There are other things you can do to make sure the water stays in your pool:

  • If you live in a particularly windy area like Palmdale, Lancaster, Actor or anywhere in the Antelope Valley for that matter, you might want to add a wind break nearby to your pool area. This could be something natural, such as shrubs, plants or tress or it could be structural like a patio cover, wall or gazebo.
  • Although aerators may create a soothing mist during those scorching summer months, they also increase evaporation. So, it might be a good idea to not use these if you can survive without them.

Did You Know?

Chlorine not only keeps your pool clean and sparkling, but it also helps to slow the rate of evaporation. That’s why it is important to check your pool’s chlorine levels regularly to ensure that there is enough to help slow the evaporation process. If you are not sure how to do this, be sure to contact a pool profession who can take care of this for you.

Signs of a Bigger Problem

If the water level in your pool starts to disappear by more than one-half inch per day, you might have a different problem on your hands. This is a potential sign that you may have a leak, which could be underground. This is the time to check with your pool professional on getting a leak detection service.

Purchasing a Pool Cover

Your pool professional can help you with your pool cover needs by measuring up the area and ordering one that fits your needs. They can also cut it and install it  for you. This saves you a lot of hassle, so you can spend more time practicing that belly-flop into your pool! Contact us at Aqueous Pools Inc. to get your pool cover fitted today.

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