Evaporation or a Leak? How to Tell in Las Cruces' Dry Desert Air

Desert Otter Pools

Last Update:
November 11, 2026

Losing pool water in Las Cruces? Learn why desert evaporation is so strong, how to run a bucket test, and the signs that point to a real leak.

In the desert, every pool loses water. The real question is whether the sun and wind are taking it, or whether something is broken. Pool leak detection in Las Cruces starts with telling those two apart, and the dry air here makes that trickier than most people expect.

At Desert Otter Pools, we work with pool owners across Las Cruces, El Paso, and the surrounding communities. Our team is LeakTronics certified, and water loss questions are some of the most common calls we get.

Below, we explain why evaporation hits harder here, how to test your pool at home, and when it is time to bring in a professional.

Why Evaporation Is a Bigger Factor in Las Cruces

Pool owners who move here from humid states are often surprised by how fast their water level drops. That is not necessarily a sign of trouble. Instead, it is the desert doing what the desert does.

Dry Air Pulls Water Out Fast

Evaporation depends heavily on how much moisture is already in the air. In Las Cruces, the air is usually very dry, so it soaks up water from your pool surface quickly. A drop that would be alarming in Florida can be perfectly normal here.

Sun and Wind Add to It

Strong sunshine warms the water, and warmer water evaporates faster. Meanwhile, the spring winds that sweep across the Mesilla Valley pull even more moisture off the surface. On a hot, breezy afternoon, your pool is working against all three at once.

Why This Makes Leaks Harder to Spot

Because normal loss is already noticeable, a slow leak can hide inside it for months. Many owners simply top off the pool every few days and never question it. That is exactly how a small leak turns into a bigger repair.

How to Tell Evaporation From a Leak at Home

The simplest way to separate the two is a side by side comparison. You place a bucket of water in the pool so both lose water under the exact same sun and wind. If the pool drops more than the bucket, something besides evaporation is at work.

  1. Turn off the autofill. Otherwise, it will quietly refill the pool and hide the results.
  2. Fill a bucket with pool water and set it on the first or second step.
  3. Match the levels. Adjust the water inside the bucket until it lines up with the pool level outside.
  4. Mark both lines with tape or a grease pencil.
  5. Wait 24 hours, keeping the pump on its normal schedule.
  6. Compare the drops. If the pool fell further than the bucket, you likely have a leak.

Repeat With the Pump Off

Running the test a second time with the pump off can reveal more. A bigger loss with the pump running often points to plumbing on the pressure side. A similar loss either way usually points toward the shell, fittings, or lights.

Pick the Right Day

Avoid testing during a windy spell, a monsoon storm, or a pool party. Wind can splash water out of the pool unevenly, and rain throws off both levels. A calm, ordinary day gives you the cleanest answer.

Signs That Point to a Leak

The bucket test is a strong clue, but it is not the only one. In the desert, some leak signs are actually easier to spot, because nothing else should be wet.

  • Damp soil or green patches near the pool or equipment pad in a yard that is otherwise dry
  • Water loss that continues in cooler months when evaporation slows down
  • Cracks in the deck, plaster, or tile line
  • Air bubbles from the return jets or a pump that struggles to hold prime
  • A water bill that keeps climbing even though your usage has not changed
  • Algae that returns quickly because fresh water keeps diluting your chemicals

That first sign is worth extra attention here. When a patch of ground stays damp in the middle of a dry stretch, water is almost certainly coming from somewhere it should not.

Do Not Ignore a Winter Drop

Evaporation slows down once the weather cools. So if your pool keeps losing water through the winter months, that is a strong hint something else is going on. For more on cold weather care, see our guide to winter pool care in Las Cruces.

What Professional Leak Detection Involves

A home test can tell you that water is going missing. Finding exactly where it is going takes specialized equipment and training.

Our LeakTronics certified technicians work through a methodical process:

  1. Visual inspection of the shell, tile, fittings, lights, and equipment pad.
  2. Pressure testing each plumbing line to see which one fails to hold.
  3. Dye testing around cracks, fittings, and light niches to watch for water being drawn out.
  4. Electronic listening to pinpoint leaks hidden underground or inside the walls.

Why Pinpointing Matters

Knowing the exact location keeps the repair small and focused. Instead of breaking up large sections of deck to search, the repair targets one specific spot. That saves time, money, and a lot of mess in your backyard.

A Common Misconception

Some owners assume that if the pool is losing water in the desert, it must be evaporation. Others assume every drop means a leak. In reality, the only way to know for sure is to test. Guessing in either direction can cost you, whether in wasted water or unnecessary repairs.

Frequently Asked Questions

How can I tell if my pool is leaking or just evaporating?

Run a bucket test. Set a bucket of pool water on a step, match the levels, mark both, and compare after 24 hours. If the pool drops more than the bucket, a leak is likely.

Why does my pool lose so much water in Las Cruces?

Dry desert air, strong sun, and frequent wind all speed up evaporation. Some loss is completely normal here. The bucket test helps you figure out whether your loss goes beyond what the weather explains.

Should I keep my autofill on if I suspect a leak?

Turn it off while you test. An autofill keeps topping off the pool, which hides how much water you are actually losing. Leaving it on can also let a leak run unnoticed for a long time.

Can a pool leak damage my yard or home?

Yes. Water escaping underground can soften the soil beneath your deck and equipment pad. Over time, that can lead to settling, cracks, and more expensive repairs.

What does LeakTronics certified mean?

LeakTronics is a well known maker of pool leak detection equipment and training. Being certified means our technicians are trained to use that equipment to find leaks accurately.

Do you offer pool leak detection outside Las Cruces?

Yes. Desert Otter Pools serves El Paso, Sunland Park, Anthony, Chaparral, Horizon City, Deming, and Alamogordo in addition to Las Cruces. Call (575) 219-8420 to schedule.

In the desert, it is easy to blame every missing inch on the weather. If your bucket test points to a leak, or you just want a definite answer, Desert Otter Pools can help. Book a consultation today, and our LeakTronics certified team will find out exactly where your water is going.

‍

<script type="application/ld+json"> { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "How can I tell if my pool is leaking or just evaporating?", "acceptedAnswer": { "@type": "Answer", "text": "Run a bucket test. Set a bucket of pool water on a step, match the levels, mark both, and compare after 24 hours. If the pool drops more than the bucket, a leak is likely." } }, { "@type": "Question", "name": "Why does my pool lose so much water in Las Cruces?", "acceptedAnswer": { "@type": "Answer", "text": "Dry desert air, strong sun, and frequent wind all speed up evaporation. Some loss is completely normal here. The bucket test helps you figure out whether your loss goes beyond what the weather explains." } }, { "@type": "Question", "name": "Should I keep my autofill on if I suspect a leak?", "acceptedAnswer": { "@type": "Answer", "text": "Turn it off while you test. An autofill keeps topping off the pool, which hides how much water you are actually losing. Leaving it on can also let a leak run unnoticed for a long time." } }, { "@type": "Question", "name": "Can a pool leak damage my yard or home?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Water escaping underground can soften the soil beneath your deck and equipment pad. Over time, that can lead to settling, cracks, and more expensive repairs." } }, { "@type": "Question", "name": "What does LeakTronics certified mean?", "acceptedAnswer": { "@type": "Answer", "text": "LeakTronics is a well known maker of pool leak detection equipment and training. Being certified means our technicians are trained to use that equipment to find leaks accurately." } }, { "@type": "Question", "name": "Do you offer pool leak detection outside Las Cruces?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Desert Otter Pools serves El Paso, Sunland Park, Anthony, Chaparral, Horizon City, Deming, and Alamogordo in addition to Las Cruces. Call (575) 219-8420 to schedule." } } ] } </script>