Pool vs. Evaporation in Georgetown: How to Tell the Difference

Why evaporation misleads Georgetown pool owners

Georgetown summers are hot, dry, and windy, and those three things together pull water off the surface of a pool at a rate that genuinely shocks homeowners who moved here from wetter climates. During a typical July stretch, a pool in the area can lose half an inch to a full inch of water per day through evaporation alone, which works out to a foot or more over the course of the month. That number climbs on days when the wind is up or the relative humidity drops below 20 percent.

The result is that a pool owner watching the level drop slowly over a dry stretch will often call a leak professional when the pool has no leak at all. Running the bucket test before making that call saves time and money and answers the question definitively rather than leaving it to interpretation.

The bucket test, step by step

The bucket test is simple and takes less than a minute to set up. Fill a bucket with pool water, roughly to about an inch from the top. Set it on the first or second step of the pool, in the water, so both the pool and the bucket are exposed to the same sun, wind, and temperature. Mark the water level inside the bucket and the pool level on the bucket's outside with a piece of tape or a grease pencil. Wait 24 hours with the pump running normally and the auto-fill turned off.

After 24 hours, compare the drop inside the bucket to the drop in the pool level outside. If both dropped roughly the same amount, evaporation is the whole story. If the pool dropped more than the bucket, the extra loss is a leak, and the size of the difference tells you roughly how much water the pool is losing daily to the leak rather than to weather.

What the result tells you

A difference of a quarter inch or less between the two marks is usually within the margin of a test that was not perfectly set up, a bucket that shifted, a splash from a swimmer, or slightly different sun exposure. Run the test again to confirm. A difference of half an inch or more per day, sustained across two runs, is a real leak, and a pool losing that much is worth locating.

Where the level stabilizes when the pool drops on its own is its own clue. A pool that drops to the level of the skimmer opening and stops is usually leaking at the skimmer. A pool that drops to the level of the return fittings and stops is likely leaking at a return. A pool that keeps dropping past all fittings points toward the structure or a buried plumbing line.

After the bucket test confirms a leak

Once you know it is a leak and have an idea of which zone it might be in, the next step is finding it precisely so the repair is targeted. Dye testing involves releasing a small amount of dye near a suspected spot, with the pump off and the water still, and watching whether the dye is drawn toward a crack or a fitting. Pressure testing isolates the suction and return lines and watches for a drop that confirms the line is losing water underground.

In Cimarron Hills, Berry Creek, and Stonehedge, where backyard pools are common and many are old enough to develop leaks in the liner, fittings, or buried lines, these tests give a precise answer before anyone excavates the deck or opens the equipment pad. That is the order of operations that keeps a pool repair to a single targeted fix rather than a guessing search.

When to call rather than test further

If the bucket test shows a real leak and the level-stabilization clue points clearly to a fitting or a structural crack, dye testing is something a careful homeowner can try. But if the pool keeps dropping past all visible fittings, if the ground around the equipment pad stays wet, or if a spa is losing water while the pool holds steady, those are signs the leak is in the buried plumbing, and finding it requires pressure testing and locating equipment rather than surface observation.

The bucket test is yours to do for free. The step after it, confirming the source and locating it precisely before anyone digs, is where a professional with the right equipment earns their fee by targeting the repair and protecting the deck. The bucket test is the homeowner's tool. Everything after it, dye testing, pressure testing, and locating a buried line, is where professional equipment and the trained read of what the results mean earns its place.