Every pool in Ocala loses water in the summer — between 90-degree afternoons, intense UV, and near-daily storm breezes, some loss is normal. But if the garden hose is getting more use than the pool, the real question is how to tell if your pool is leaking or simply evaporating. Evaporation costs you almost nothing; a true leak drives up your water bill, wrecks your chemistry, and sends hundreds of gallons a week into the ground around your pool shell.
This guide gives Marion County homeowners a straightforward way to get the answer: normal evaporation rates here, a 24-hour bucket test, the warning signs worth watching, where pools usually fail, and when to pay for professional leak detection.
Evaporation vs. a Leak: What Is Normal in Central Florida
Central Florida has some of the highest pool evaporation rates in the country. In peak summer heat, an uncovered pool in the Ocala area can lose up to a quarter inch to a half inch of water per day to evaporation alone — approaching three inches a week at the high end, enough to make a perfectly healthy pool look like it has a problem.
Full sun, wind, and water temperatures in the upper 80s push evaporation toward the top of that range; a screen enclosure or a muggy, overcast stretch pulls it well down. The pattern matters more than any single reading: if your pool drops just as fast during a humid, rainy week as during a dry, windy one, evaporation is probably not the whole story.
On a typical 14-by-28-foot pool, one inch of water is roughly 240 gallons, so an extra half inch a day is more than 800 gallons a week going somewhere it should not. You do not have to guess, though. A bucket test settles it in a day.
The Bucket Test: How to Tell If Your Pool Is Leaking in 24 Hours
Water in a bucket sitting in your pool evaporates at the same rate as the pool — same sun, same heat, same wind. So if the pool drops faster than the bucket, the difference is a leak.
Step 1: Fill the Pool to Its Normal Level
Bring the water up to the middle of the skimmer opening and turn off your autofill; left running, it will hide the very loss you are trying to measure.
Step 2: Set Up the Bucket
Place a 5-gallon bucket on the second step, weigh it down with a brick, and fill it with pool water until the level inside roughly matches the pool level outside.
Step 3: Mark Both Water Levels
With tape or a grease pencil, mark the water level inside the bucket and the pool level on the outside.
Step 4: Wait 24 Hours, Pump Running Normally
Run your equipment on its usual schedule and keep swimmers out. Skip the test if rain is in the forecast.
Step 5: Compare the Two Marks
Equal drops mean ordinary evaporation. If the pool fell noticeably more than the bucket, it is losing water to something other than the sky.
Step 6: Repeat the Test with the Pump Off
Refill, re-mark, and repeat with the equipment off. More loss with the pump running points to pressure-side plumbing; more with the pump off suggests the suction side; the same loss either way points to the shell or a fitting: skimmer, return, light niche, or a crack.
More Ways to Tell If Your Pool Is Leaking
A leak usually shows up in more ways than a falling waterline. Watch for these signs, especially in combination.
Chemical demand suddenly spikes. Every leaked gallon is replaced by untreated fill water that dilutes chlorine, stabilizer, and salt. If your chemistry will not hold steady — or a salt system keeps reading low without heavy rain — constant dilution is a common cause.
The autofill runs constantly. Convenient, but very good at hiding leaks. If it cycles daily or never seems to rest, shut it off for a few days and watch the level.
Soggy ground or unusually green grass near the pool. A strip of lawn between the pool and the equipment pad that stays greener and softer than everything around it can trace a leaking underground line — and in our fast-draining soil, even a faint version deserves attention.
Cracks or settling around the pool. New deck cracks, gaps at the coping, or cracks along the tile line can be both symptom and source: escaping water washes fine sand out from under decks and slabs, leading to more settling.
A rising water bill. Hundreds of gallons of replacement water each week shows up on your utility statement. If it has crept up with no change in habits, the pool is a prime suspect.
Air in the system. Bubbles from the return jets or an air pocket in the pump basket often point to a suction-side leak that pulls in air while the pump runs.
Where Pools Typically Leak
Leak detection keeps turning up the same handful of failure points.
The skimmer throat. The joint where the plastic skimmer body meets the concrete or gunite shell is the most common leak point in residential pools; the two materials expand and contract at different rates until the bond separates.
Return fittings. Threaded fittings where return lines enter the pool wall can loosen or crack, letting water escape behind the wall.
The light niche. Water can slip out around the light niche or follow the electrical conduit back toward the junction box.
The main drain. The hardest spot for a homeowner to inspect. Suspect it when the level keeps falling well below every other fitting.
Underground plumbing. Suction and return lines run beneath the deck and yard, where shifting soil, roots, and old glue joints can open leaks you will never see.
One useful trick: a pool that stabilizes at a specific height is telling you the leak sits at that height. Stopping at the bottom of the skimmer opening points to the skimmer throat; falling toward the main drain suggests lower structure or plumbing. With the pump off and the water still, a little dark food coloring released near a suspect fitting will drift steadily toward a leak.
Sandy Soil, Springs, and Why Marion County Leaks Deserve Respect
Central Florida's sandy soil drains so well that leaked water rarely leaves evidence: it percolates straight down and disappears, so the classic wet spot never forms. Plenty of Marion County pools leak for months with nothing visible at ground level.
There is also a longer-term reason to take chronic leaks seriously here. Marion County sits on karst terrain — the limestone landscape that gives us Silver Springs and Rainbow Springs — where moving water slowly shapes the ground, and soil can shift or settle where it flows consistently. To be clear: a pool leak by itself is very unlikely to cause a sinkhole. But steadily sending hundreds of gallons a week into the ground beside your shell, deck, and home is exactly the kind of water movement worth stopping.
What You Can Check Yourself, and When to Call a Pro
Reasonable Homeowner Checks
Run the bucket test with the pump on and off, shut off the autofill and log the level daily, check the equipment pad for drips at the pump seal, filter, valves, and heater, dye-test the skimmer throat, returns, steps, and light ring, and note where the level stabilizes. In a vinyl-liner pool, also look for tears around steps, fittings, and the waterline. If the trail leads to the equipment pad, our equipment repair team handles failed pump seals, leaking valves, and cracked fittings.
When Professional Leak Detection Makes Sense
Bring in a professional when the bucket test confirms a leak you cannot locate, you are losing more than about a half inch a day, the loss changes with the pump on versus off, or deck settling shows up alongside the water loss. Pros have tools homeowners do not: pressure testing that isolates each plumbing line, acoustic equipment that hears water escaping underground, and in-pool dye and camera work. Reach out and we will point you in the right direction, whether it is a fix we handle or a job for a dedicated leak-detection specialist.
What Leak Detection and Repairs Cost
Costs depend on the pool and the leak, so treat these as ranges, not quotes.
Typical Cost Ranges
- Professional leak detection$250 - $500
- Minor repairs (sealing a skimmer throat, replacing a fitting, patching a liner)Lower end
- Major repairs (skimmer replacement, excavating underground plumbing)Varies widely
Some leak-detection companies credit part of the detection fee toward the repair if you hire them for both — worth asking.
Finding the leak precisely is what keeps the repair on the smaller end, and paying for detection usually beats guessing or quietly paying for extra water and chemicals every month. Pairing the fix with consistent weekly pool maintenance also means the next problem gets spotted early.
Losing Water Faster Than You Can Explain?
We will help you figure out whether it is evaporation, equipment, or a true leak.
Call (352) 607-6100Frequently Asked Questions About Pool Leaks
How much water loss is normal for a pool in Ocala?
In peak summer heat, an uncovered Central Florida pool can lose up to a quarter inch to a half inch per day to evaporation. Screened pools lose noticeably less, and humid or rainy weather slows evaporation dramatically. Losing more than about a half inch a day, or losing at the same rate in any weather, is your cue to run a bucket test.
How accurate is the bucket test for finding a pool leak?
Very reliable for the core question of leak versus evaporation, because the bucket water sees the same sun, heat, wind, and humidity as the pool. It will not tell you where the leak is, only that one exists — repeating it with the pump off helps narrow down where.
How much does professional pool leak detection cost in Marion County?
Professional leak detection typically runs $250 to $500, depending on the size and complexity of the pool. Repair costs vary widely by location: sealing a skimmer throat or replacing a return fitting sits at the low end, while excavating underground plumbing costs considerably more. Get a written estimate once the leak is located.
Can a pool leak cause a sinkhole in Marion County?
A pool leak by itself is very unlikely to cause a sinkhole. Marion County does sit on karst limestone terrain, where underground water movement shapes soil over long periods — a good reason to fix chronic leaks promptly, not a reason to panic. The realistic consequences of an ignored leak are washed-out sand under decks, settling, cracked coping, and rising water and chemical bills.