
If you've noticed your pool water level dropping in your Arizona backyard, you're not alone. Water loss can strike any swimming pool—and knowing the reason why your pool is losing water will save you frustration, big bills, and even damage to your pool structure. This guide from Optimal Pool Leak Detection delivers the answers: why pools lose water, what’s normal and what’s a red flag, and how our expert leak detection service (using advanced Leaktronics equipment) brings peace of mind to every valley pool owner.
Why read this article? Because finding out if your pool is suffering from evaporation or a leak is the difference between enjoying your oasis and facing expensive repairs. Learn from local experts how to protect your investment with knowledge, easy tests, and the fastest pool leak solutions in AZ.
Why Do Pools Lose Water in Arizona?
If your pool is losing water, heat is usually a prime suspect—but it’s not the only one. In Arizona, pools face two typical culprits:
- Evaporation: Desert sun and dry winds cause pool water to evaporate fast, especially in the summer months.
- Leaks: Issues like cracks in the pool shell, faulty plumbing, or broken equipment can lead to persistent water loss.
Knowing the difference lets you prevent water loss before it damages your pool’s water level and costs you money.
How Much Water Loss Is Normal in a Pool?
Arizona pools can lose up to an inch of water per day to evaporation during peak summer. That's normal for our climate! Factors like high temperature, low humidity, and lots of sun add up quickly, causing thousands of gallons to disappear each month.
But if you see your pool water level dropping by more than 1–2 inches of water every day, especially overnight or outside a heatwave, you might have a pool leak.
Is It Evaporation or a Leak?
Evaporation or a leak—how do you tell?
- Seasonal loss: If the pool loses water faster during hot and windy days, evaporation is likely.
- Constant loss: If your pool loses water at the same rate overnight, during cool spells, or regardless of weather, a pool leak could be to blame.
A quick DIY check: Mark the water level at night. If the water level drops dramatically by morning, especially when it's cool or you're using a pool cover, it’s a leak warning.
How Much Water Loss Is Too Much?
A significant amount of water loss in your pool means trouble. Here’s what to watch for:
- More than 2 inches of water every week: That’s above normal Arizona rates.
- A sudden change after you know the pool is full.
- Noticeable soggy spots, cracks in the pool, or air bubbles in returns.
If your pool is losing more water than what weather reports suggest, call Optimal Pool Leak Detection to diagnose quick.

What Are the Most Common Causes of Pool Leaks?
Pool leaks can come from:
- Cracks in the pool structure: Over time, Arizona’s shifting soils and intense sun may cause cracks or settle the pool, leading to water escaping through concrete or vinyl.
- Faulty pool equipment: Leaks in your pool pump, filter, or plumbing connections.
- Damaged pool lights or fittings: Water can escape around light fixtures or jets.
- Skimmer and return leaks: Worn or separated seals, especially near the edge.
Each issue can lead to a significant amount of water loss over time if not repaired.
How Do Pool Leak Detection Services Work?
At Optimal Pool Leak Detection, we use Leaktronics’ industry-leading leak detection equipment—the best in the business. Our process includes:
- Listening devices to “hear” leaks behind walls and underground
- Pressure testing to pinpoint leaks in plumbing and return lines
- Dye testing for suspected cracks or liner issues
This saves you from unnecessary digging and costly guesses, and lets us repair only where needed.
How to Find Out if Your Pool is Losing Water Overnight
You may wonder, "How can I check if my pool is losing water overnight?"
- Bucket Test: Place a bucket of pool water on a pool step. Mark inside and outside levels. If the pool water drops more than the bucket after 24 hours, you likely have a leak.
- Mark the water level on the pool wall before bed. If it’s down by morning, especially after a cool evening, suspect a leak.

Can Pool Features and Design Cause Water Loss?
Yes! Pool design and construction factors include:
- Water features (like fountains and waterfalls) which increase pool water evaporation
- Loose tiles or fittings letting water escape unseen
- Uneven pool construction that allows water to settle or leak from one area
Proper pool care and regular checks are the best way to prevent water loss from design or age-related issues.
What Should Every Pool Owner Watch For?
Pool owners should be vigilant for:
- Unusual water loss not explained by local weather
- Cracks in the pool walls or wet areas around the pool
- Rapid water loss overnight
- Increased water bills
- Visible leaks or bubbling at equipment
Keep your pool’s water level stable with regular self-checks and annual professional inspections.
Why Choose Optimal Pool Leak Detection for Pool Leak Repair in Arizona?
- Local expertise on Arizona pools and unique soil conditions
- Top tech: Leaktronics’ state-of-the-art leak detection tools
- Fast, honest diagnostics—we find leaks quickly and with minimal disruption
- Clear explanations and quotes—so you’re never in the dark
- Trusted by pool owners across Arizona
Key Takeaways for Arizona Pool Owners
- Pool water loss can be normal, but drop of more than 2 inches per week needs attention
- Evaporation is high in Arizona, but leaks are still common—spot the difference with a bucket test
- Most leaks are from pool structure cracks, equipment, lights, and skimmer lines
- Leaktronics leak detection is the fastest way to find and fix issues, saving time and money
- Call Optimal Pool Leak Detection for precise, reliable pool leak repair anywhere in Arizona
Don’t let leaks drain your fun or your wallet—get your pool checked today and dive into peace of mind!