It’s June in the East Valley. The temperature just hit 112°F in Gilbert, the afternoon breeze feels like a blow dryer, and you just noticed your pool’s water level has dropped an inch since Tuesday.
Panic sets in. You start thinking about cracked shells, underground pipe bursts, and the massive repair bill that comes with East Valley pool problems 2026. But before you call out a leak detection specialist, you need to understand the unique "desert tax" we pay on our water.
In Arizona, water doesn't just sit in your pool; it fights for its life against the atmosphere. Here at Complete Aquatic Solutions, we see this every day from Mesa to San Tan Valley. Let’s break down how to tell if you’re losing water to a hole in your plumbing or if the Arizona sun is simply "drinking" your pool.
The Brutal Reality of Arizona Evaporation
If you’re new to the East Valley: or even if you’ve lived in Chandler for a decade: the sheer volume of evaporation in the summer can be shocking. During the peak months of June, July, and August, an uncovered residential pool can lose anywhere from 0.25 to 0.5 inches of water per day.
To put that into perspective:
- Daily loss: ~0.5 inches
- Weekly loss: ~3.5 inches
- Monthly loss: Up to 4,000 gallons for an average 15,000-gallon pool.
- Prep the Pool: Bring the pool water to its normal operating level (usually middle of the skimmer).
- The Bucket: Fill a standard 5-gallon bucket with pool water.
- The Setup: Set the bucket on the first or second step of the pool (so the water temperature stays the same).
- Leveling: Adjust the water level inside the bucket so it is exactly even with the pool water level.
- Mark It: Use a waterproof marker or a piece of electrical tape to mark the water level on the inside of the bucket and the outside of the bucket (the pool level).
- Wait 24 Hours: Turn off the auto-fill and any water features (fountains or waterfalls) during this period.
- Compare: Measure the drop.
- Both levels dropped equally: Congratulations! You don’t have a leak. You just have a very thirsty Arizona sun.
- The pool level dropped significantly more than the bucket: You likely have a leak. It’s time to start looking at your equipment pad or calling in the pros.
When the humidity drops into the single digits and the wind picks up across the flatlands of Queen Creek and San Tan Valley, your pool acts like a giant swamp cooler. The drier and windier the air, the faster that water turns into vapor.

Why Pool Chemistry Solutions Fail When Water Drops
It’s not just about the water level. When water evaporates, it leaves everything else behind: salt, calcium, and minerals. This is why Arizona pool maintenance is a year-round battle.
As your water level drops and you (or your auto-fill) add fresh tap water, you are essentially concentrating the minerals. High Total Dissolved Solids (TDS) and Calcium Hardness are the silent killers of pool equipment. If you notice your pool chemistry solutions aren't working like they used to: maybe your chlorine won't "stick" or your salt cell is constantly scaling: it’s likely because your water is "old" and mineral-heavy from years of evaporation cycles.
The DIY Secret: The "Bucket Test"
Before you spend hundreds on professional leak detection, you should perform the Bucket Test. This is the gold standard for DIYers in Mesa and Gilbert to determine if a leak is present.
How to do the Bucket Test:

The Results:
Common Leak Culprits in the East Valley
If the bucket test confirmed a leak, don’t panic. Often, the issue is visible and relatively simple to fix. Check these areas first:
1. The Equipment Pad
Look for damp soil or white "crusty" calcium deposits around your pump and filter. A common fail point is the pool pump seal plate or the internal O-rings. If you have a Pentair Whisperflo, an exploded diagram can help you identify exactly which seal is leaking.

2. The Multiport Valve
If you have a sand or D.E. filter, check the "waste" line. If water is trickling out of that pipe while the pool is running, your spider gasket is likely worn out, and you’re literally sending money down the drain.
3. The Light Niche
Believe it or not, the conduit that carries the wire from your pool light to the junction box is a very common place for leaks to hide.
When to Call a Professional
If you’ve checked the equipment and performed the bucket test, but the water is still vanishing faster than a "For Sale" sign in a Gilbert cul-de-sac, you need specialized help.
Complete Aquatic Solutions provides expert underground leak detection. We use sensitive sonar equipment and pressure testing to find the exact square inch where a pipe might be cracked under your pool deck. This prevents you from having to tear up your entire backyard to find one small hole.

The "Middle Ground": Virtual Tech Support
Not sure if you’re ready for a full service call? We offer a Virtual Technician service where you can hop on a video call with one of our experts. You can show us your equipment pad or your bucket test results, and we can guide you through the troubleshooting process in real-time. It’s a great way to save money while still getting professional eyes on your East Valley pool problems.
Protecting Your Pool in 2026
As we move deeper into the summer, remember that your pool is an ecosystem. High evaporation leads to high calcium, which leads to equipment failure.
Pro-Tip for Queen Creek and San Tan Valley Residents: The wind in your area is stronger than in the central valley. Consider a liquid solar cover or a physical cover if possible. Even a "bubble" cover can reduce your evaporation by up to 90%, saving you thousands of gallons of water and keeping your chemistry stable.
Whether you need a quick repair estimate or just some advice on which DIY parts to buy for your Pentair Rebel cleaner, we’re here to help.
Don’t let the Arizona heat win. Test your pool, check your seals, and keep that water where it belongs: in the pool!
Need a hand? Contact Complete Aquatic Solutions today for professional leak detection and maintenance across the East Valley.

