How to Prevent Pool Water Evaporation in Your Arizona Pool

Pool Maintenance | 08/13/14

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Today there are over 300,000 pools in Arizona alone, and it’s estimated that the average pool of 10,000 to 15,000 gallons will lose the entirety of its contents every year thanks to pool water evaporation. While some pool owners may have accepted their pool losing water as part of the cost of having a pool, we know firsthand that many of those thousands of gallons that are lost every year can be salvaged and saved.

How Much Water Are You Losing?

To give you an idea of how much water you’re losing to pool water evaporation, it’s time to take out your handy pool volume calculator and figure out just how large your pool is, and then perform a bucket or tape test to see how much water you’re losing a day. The average pool will lose anywhere from 1/4″ to 1″ per week.

Pool Solutions for Pool Water Evaporation

Pool Cover

The first of the pool solutions is a classic that far too few pool owners take advantage of: their pool cover. When pool owners cover their pool with a swimming pool cover, they can reduce the amount of evaporation by up to 95%! Pool covers come with a host of other benefits, including:

  • They help reduce the growth of algae and keep debris out
  • Requires less chemicals and backwashing of your pool

In Arizona desert regions, pool covers tend to retain heat. Consider a reflective pool cover to curb any heat retention, keeping the pool water comfortable for swimming. There’s also a new type of pool cover, a “liquid pool cover,” is now on the market. These are either silicon or isopropyl-alcohol-based and they work by forming an incredibly thin layer of molecules on the surface of the water. Many manufacturers of these products claim that they’ll reduce your water evaporation anywhere from 30% to 50%.

Install Windbreakers

A 7 mph wind has the potential to increase evaporation losses by 300%. Break the wind by installing fences, trees, and shrubs around your backyard pool to reduce evaporation losses. BONUS: Install drought-friendly plants in your backyard to save even more water.

Establish Perfect Timing

Timers can be installed to standardize how often your pool pump runs and how often pool features run as well. Timers will keep your pool pumping consistently and helps keep water fountains, waterfalls, and water slides off when not in use since aeration increases evaporation.

Keep Splashing to a Minimum

A good solution for preventing pool evaporation is reducing the amount of splashing water. This can be done without sacrificing summer pool fun. When filling your pool, be sure to not overfill to minimize potential loss. Check pool fill valves regularly. A fill valve can get stuck and overfill your pool, especially when you’re out of town for summer vacation.

Hire a Professional

Pool owners that maintain chemicals properly reduce the frequency of draining a pool. Pools seldom require draining so ask or hire a professional before doing so. Sometimes, pool service companies can even perform maintenance or repairs without having to drain your pool.


Shasta Pools is a Phoenix pool builder who provides a variety of services including swimming pool remodeling, commercial pool building, and pool service and repair. Since its establishment in 1967, Shasta has helped over 80,000 families realize their dream of pool ownership. By providing exceptional value, quality craftsmanship and superior customer service, the Shasta team continues to fulfill the corporate mission of astonishing and delighting their customers and exceeding expectations. You can learn more about Shasta Pools & Spas by visiting them online, or by connecting with them on Facebook or Twitter.


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