Spring Pool Opening: Checking for Winter Leak Damage in Texas

Why Texas Pools Still Take Winter Damage

Texas doesn't get the deep, prolonged freezes of the northern states, so most pool owners close out the season and assume they'll open to a clean slate in spring. Most years that's true. But even a single hard freeze — the kind that sends San Antonio into panic mode when pipes burst in February — can do real damage to a pool that wasn't properly winterized. And in Abilene and the Taylor County area, winter temperature swings are more severe than most of the state, with nights in the teens every few winters.

Freeze damage isn't the only risk. Texas clay soil dries out significantly over a hot, dry fall and winter. That drying causes the Blackland clay common to San Antonio and Bexar County to contract and shift. Ground movement under and around a pool shell can open hairline cracks, stress underground plumbing connections, and pull fittings slightly out of alignment — even without a single frost. A pool that was fine when you closed it in October may have a slow leak by the time you open it in March.

What to Inspect Before You Add a Single Chemical

The temptation at opening is to shock the water, balance the chemistry, and get back to swimming as quickly as possible. Resist it. If you have a leak, every dollar you spend on chemicals is going to dilute out through that leak over the coming weeks. A twenty-minute visual inspection before you start the pump can save you a frustrating summer.

Walk the entire pool perimeter and look at the waterline tile and coping. Cracks that appear or worsened over winter are worth noting — they won't always mean a structural leak, but cracking at the bond beam is a common indicator of shell movement. Check where the skimmer neck meets the pool wall; this joint is one of the most common leak points after ground movement. Look at the equipment pad area for any signs that plumbing fittings shifted — minor cracking in PVC unions or visible gaps at connection points.

• Walk the full perimeter and note any new cracks in the tile, coping, or bond beam
• Inspect the skimmer-to-shell joint on both sides — this is a high-frequency failure point
• Check the equipment pad for displaced fittings, cracked unions, or new drips
• Look at the deck around the pool for heaving, sinking, or new separation gaps near the edge
• Note any soft or unusually wet ground near return lines or the equipment pad

What a Hard Freeze Actually Does to a Pool

When water in a plumbing line or fitting freezes, it expands. If the freeze is hard enough and long enough, that expansion can crack PVC fittings, split unions, and fracture the skimmer body. The failure isn't always obvious from above the deck — a cracked return elbow buried underground may not show any surface sign until you've been losing water for weeks and finally dig.

Pool heaters and heat pumps are particularly vulnerable to freeze damage because their internal plumbing is more complex and harder to fully drain. If your equipment wasn't properly winterized — or if the freeze hit faster than expected and winterization didn't happen — the first thing to do at opening is run the system and check every fitting, valve, and manifold for new drips before the pump runs long enough to pressurize the lines fully.

For pools in San Antonio that went through a significant freeze event, an above-ground plumbing check is worth the time even if the pool looks fine from the outside. Leaks that start at a cracked underground fitting often don't show as surface wet spots until substantial water has already eroded the surrounding soil.

When to Get a Pressure Test Before You Invest in the Season

A pressure test of the plumbing lines is the definitive way to know whether underground lines are holding. A technician isolates each line — suction, return, main drain — pressurizes it, and watches for pressure drop. If a line fails to hold pressure, there's a leak in that line. No guesswork, no watching the water level for weeks.

It makes sense to pressure test before opening if: your area experienced a hard freeze event over the winter; you noticed soil heaving or settling near the equipment pad or along the known path of your return lines; you closed the season with a slow water-loss issue you never resolved; or your pool is older and hasn't been pressure tested in several years.

The value of doing this at opening rather than waiting is simple: you're about to spend on chemicals, possibly a service call for algae, and weeks of pool time. A leak found in March costs the same to fix as a leak found in July — but you'll have lost a summer of water, chemicals, and frustration if you wait.

The Spring Water-Level Watch Test

If the pool looks fine visually and you'd rather not pressure test right away, a simple observation period works as a first pass. Fill the pool to operating level and run the system for 48–72 hours before adding any chemicals. Mark the water level on the skimmer throat or tile with a grease pencil or tape. Check it at 24 hours and at 48 hours.

Normal spring evaporation is low — days are shorter, temperatures are mild, and wind is less aggressive than summer. Losing more than about 1/4 inch per day in March or April in San Antonio is unlikely to be evaporation alone. If you see the level dropping measurably faster than that, the bucket test will help you confirm before you decide whether to call in a specialist.

One spring-specific nuance: if the pool sat with low water over winter and you're refilling, give the shell a few days to re-wet and settle before drawing conclusions. Plaster and pebble surfaces that have been partially exposed can initially absorb water as they rehydrate. That absorption isn't a leak, but it can mimic one for a day or two.

Starting the Season the Right Way

The goal at spring opening is to confirm the pool is tight before you commit to the season's budget. That's a low bar — it just takes a visual walk, a day or two of watching the water level, and willingness to call a professional before you're deep into chemical costs and months of uncertainty.

Aquatic Leak Detection handles spring diagnostics the same way it handles any other call: pressure testing the lines, inspecting the shell and fittings underwater if needed, and pinpointing the problem before any repair begins. If the pool is tight, you get that confirmation and the peace of mind to open the season without second-guessing every water level check. If there's a leak, you know about it on day one rather than day ninety.