Start with your pool
Pool water can leave through evaporation, splashing, cleaning or a leak. In Scottsdale and Phoenix, warm dry conditions make evaporation a familiar explanation, but they do not explain every unexpected change. The EPA identifies these different water-loss paths; the pattern at your own pool matters more than a generic number.
Compare the pool with itself
Begin with what is normal for your property. Is the waterline lower than you usually see it? Has an automatic filler begun running more often? Did the change follow a busy swim day, a filter service or a period when a cover was off? Note the date, the approximate waterline against a fixed feature and any recent change in use. If safe, take a photo from the same position on different days.
A waterline photo documents appearance, not a measured loss rate. Do not start draining the pool or alter valves to test a theory. Your pool professional can decide which measurements or leak checks suit the installed equipment.
Note where water appears
From a safe distance, look for an equipment-pad area that stays wet, a visible drip, or water appearing somewhere new. Mention whether it happens only when the pump runs or also when it is off, if you already know. Do not approach wet electrical equipment, open pressurized parts or dig around plumbing for a better photo.
If a leak, electrical concern or unusual equipment noise is present, keep clear and contact a qualified professional promptly. A visible wet spot may be useful evidence, but it does not prove the leak's origin.
Bring a short record to the call
Tell the team when you first noticed the change, what the refill system has been doing, whether a cover or water feature is in use and where water is visible. A recent service report may help place the observation on a timeline. Our visit-photo guide explains why an image still needs a measurement or assessment for a conclusion.
The next step is an assessment of your pool, not a diagnosis from a single sign. Our water-use observation guide shows how to establish a useful record before that conversation.
Updated
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