Pool leak detection in Universal City, TX from Blue Science: pressure and dye testing that finds where a Universal City swimming pool is losing water, even when hard water, cedar and oak pollen, and 90-degree water make evaporation hard to judge, a written report with the location and the results explained, the leak repair quoted separately, and a 30-day warranty when we do the repair. Pricing varies by pool, so call for a quote on the standard leak detection visit.
Universal City, TX Pool Leak Detection
Stop guessing where the water is going
We follow the evidence, pressure testing, dye testing, and focused inspection, then explain what we found on your Universal City pool and the practical next step.
Pool Leak Detection for Universal City
Find the source before water loss becomes a bigger problem
Universal City sits on blackland clay that swells in a wet spring and shrinks hard in August, and the builder-grade plumbing under 1970s and 1980s pools in Olympia and Coronado Village has been moving with it for decades. If your pool is losing more than evaporation explains, Blue Science finds the source and quotes the repair separately.
Clay leaks show up in late summer when the ground pulls away from the shell, so a Universal City pool that held water in May and loses an inch a day in September has usually opened a joint rather than sprung a mysterious leak, and the dye finds it quickly.
Where Universal City pools lose water
A level that drops faster with the pump running, air spitting from a return, a deck slab that has tilted at a joint, or a patch of lawn that stays green through a drought are the clues worth a call. Clay movement opens the skimmer-to-shell joint first, then the return fittings, and older PVC under the deck cracks where the soil pulled it.
Skimmer throats, return fittings, and light niches are the usual sources on Universal City pools, and each is dye-tested during the visit.
Leak detection for Universal City and Coronado Village
Our leak technicians cover Universal City, Olympia, and Coronado Village on the same schedule as our weekly routes, so a visit can be arranged within days. Call for pricing on the standard leak detection visit in Universal City, TX, with repairs quoted separately once the source is found.
Detection carries a 30-day warranty when Blue Science performs the repair, and the line is retested afterward.
A leak test in Universal City
From a bucket on the step to a marked spot
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Bucket test read Yesterday's bucket tells us how much of the loss is evaporation and how much is not. -
Pressure and dye Each line is isolated and pressure-tested; dye finds cracks around fittings and lights. -
The mark The source is marked, photographed, and written up with the repair options.
Your Greater San Antonio team
7 cities, one phone number, the same faces
The leak technician, the repair crew, and the weekly routes work out of the same Greater San Antonio office, so a found leak becomes a scheduled repair without a second company.

Our customers in Universal City love our scientific approach to pool leak detection in the face of hard water, cedar and oak pollen, and 90-degree water. Their reviews are here.
Turn Water Loss into a Clear Answer
Ready to find what is happening in your Universal City pool?
Tell us how fast the water level is dropping and what you have noticed around the pool or the equipment; we will schedule the right leak detection visit in Universal City and get the issue fixed.
Good to know
Questions Universal City Pool Owners Ask
How do I know it is a leak and not the weather?
Put a bucket of pool water on the step for a day and mark both levels. If the pool drops faster than the bucket, that difference is the leak. In North Texas I also ask when the yard last moved, because clay soil pulls skimmers away from the shell in a dry August.
Answered by a Blue Science leak technician, Greater San AntonioWhy is my pool losing 1 inch of water a day?
An inch a day usually means a leak, not the weather, even with hard water, cedar and oak pollen, and 90-degree water. Evaporation takes a quarter inch or so on a hot Universal City day and far less in humid or cool weather; wind, a heater, a spa spillway, and hard water, cedar and oak pollen, and 90-degree water push it up, but not to an inch. Run the bucket test, a bucket on the step filled to the pool level, 24 hours with the autofill off, and compare: water lost beyond what the bucket lost is leaking, most often at the skimmer, a return line, or a light niche, the pattern in all 7 cities we serve. Detection is warranted for 30 days in Universal City when Blue Science makes the recommended repair, in all 7 cities we serve.
How can I find out where my pool is leaking from?
Watch the level, then test the lines. Mark the waterline, turn off the autofill, and note where the pool settles over a day or two, the skimmer mouth, the return fittings, the light niche, and the main drain each showing a different stopping point, whatever hard water, cedar and oak pollen, and 90-degree water are doing. What you cannot see from the deck, a Universal City leak detection visit finds by pressure-testing each line and dye-testing the fittings and the shell, the same routine across 7 cities. Our Universal City technicians document the source with photos before any repair is proposed, whatever hard water, cedar and oak pollen, and 90-degree water did to the pipes.
What is the easiest way to find a leak in a pool?
The bucket test. A bucket on the top step, filled to the pool's level and marked, loses water only to evaporation, hard water, cedar and oak pollen, and 90-degree water included; the pool loses water to evaporation and to any leak. Compare the two lines after 24 hours with the autofill off and the gap is the leak; in Universal City that takes a day and no tools, and finding the source takes the pressure and dye testing of a detection visit, one call to 210-704-1400. Turn the autofill off first in Universal City, or the test measures nothing, whatever hard water, cedar and oak pollen, and 90-degree water do.
What is the most common cause of pool leaks in Universal City?
The skimmer, first and by a wide margin. The throat where the skimmer meets the shell moves every time the deck and the pool move differently, and in Universal City, hard water, cedar and oak pollen, and 90-degree water keep them moving. Return fittings and light niches come next, then underground lines where a deck has settled, and shell cracks last; each shows a different pattern in the water level, and the dye test confirms it in minutes, as it has across 7 cities. Once fixed, a Universal City pool on weekly service gets its water level checked every visit, whatever hard water, cedar and oak pollen, and 90-degree water bring.
Does a leaking pool get worse if I wait?
Yes, in three ways, and hard water, cedar and oak pollen, and 90-degree water speed all three. Every day the autofill covers the loss you pay for water and for the chemicals that leave with it; water leaving under the deck washes out the fill and settles the deck, which opens more joints; and a pool that drops below the skimmer lets the pump suck air and run dry, which turns a leak call into a repair call. In Universal City the leak that started in spring is a bigger job by fall, which is why 210-704-1400 is worth a call early.
Seen our truck on your street?
That is because we also service New Braunfels, Shavano Park, Scenic Oaks, Fair Oaks Ranch, and Boerne
Ask around Universal City and someone will know us. Ask in the next town over and the answer is the same, because those pools sit on the same Greater San Antonio routes as yours.





