Is My Fountain Hills Pool Leaking or Just Evaporating? The Bucket Test and Beyond

With roughly 60 to 70 percent of Fountain Hills homes having a pool, the question of whether a pool is leaking or simply evaporating is one of the most common pool plumbing concerns in town. The difficulty is that Arizona's heat causes real, significant evaporation, so a dropping water level is not automatically a sign of trouble. Distinguishing normal evaporation from an actual leak is the first step, and there is a simple test that does it.

Before you call anyone or assume the worst, you can get a clear answer at home with a bucket, some water, and 24 hours. Here is how the bucket test works and what the result tells you.

How much evaporation is normal in Fountain Hills?

Arizona pools lose a meaningful amount of water to evaporation, especially in the warmer months. A typical Fountain Hills pool loses roughly a quarter inch of water per day to evaporation under normal summer conditions, which adds up to about 1.5 to 2 inches per week. Wind, low humidity, high temperatures, and heavy use all increase evaporation further. This is why a pool that drops an inch or two over a week is usually doing nothing more than what every pool in the desert does.

The problem is that a slow leak can hide inside that normal evaporation. If your pool is losing a quarter inch per day to evaporation and another quarter inch per day to a leak, the half-inch daily drop might not look obviously alarming, but the leak is costing you water, chemicals, and potentially causing damage to the surrounding soil and structure. Separating the evaporation from the leak is exactly what the bucket test does.

How to do the bucket test

The bucket test is based on a simple principle: a bucket of pool water sitting in the pool experiences the same evaporation as the pool itself, but it cannot leak. So if the pool drops more than the bucket, the difference is your leak.

Fill a bucket with pool water and place it on a submerged step of the pool, so the bucket sits in the water. Fill the bucket to match the pool's water level, and mark both the water level inside the bucket and the pool level outside it. Leave the pool pump running normally, and wait 24 hours. After a day, compare the two levels. If the pool level has dropped the same amount as the bucket level, the loss is evaporation, and your pool is fine. If the pool has dropped more than the bucket, the extra drop is a leak.

For the most accurate result, do the test over a period without rain or heavy pool use, and repeat it once to confirm. A pool dropping more than the bucket consistently is a clear signal that a leak evaluation is warranted.

Other signs that point to a leak

Beyond the bucket test, a few observations can suggest a leak and even hint at where it is. Pay attention to whether the pool loses water faster when the pump is running or when it is off. A pool that drops faster with the pump running often points to a pressure-side plumbing leak, where the return lines are under pressure and pushing water out through a failure. A pool that drops faster with the pump off can suggest a suction-side leak or a leak in the shell or fittings below the static water line.

Wet or persistently soft ground around the pool equipment pad is another sign, indicating that water is escaping from the plumbing into the surrounding soil. Cracks in the pool deck, a section of decking that has settled, or unusually lush vegetation in one area near the pool can all point to water escaping underground. If you are refilling the pool more than twice a week, that alone suggests a loss beyond normal evaporation.

What happens after a leak is confirmed

Once the bucket test or other signs confirm a leak, the next step is locating it. A professional pool leak detection evaluation separates the possible sources systematically. We start with a pressure test on the plumbing circuits to determine whether the loss is in the shell or the plumbing. If the plumbing loses pressure, we use dye testing at fittings and acoustic listening equipment to pinpoint the failure point in the pipe runs, even when they are buried under decking.

Most Fountain Hills pool leak evaluations produce a definitive location in a single visit. The repair depends on what we find: a skimmer plate, a return fitting, or a pressure-side pipe splice are common plumbing fixes. The sooner a confirmed leak is located and repaired, the less water and chemical cost you absorb and the less risk of the soil saturation that can damage pool decking and equipment. The bucket test is your first, free step. If it points to a leak, a detection evaluation is the next.