Your pool's water level is down again, and you're refilling more often than your neighbors seem to. Before you assume the worst — or shrug it off as "just Florida" — there's a simple 24-hour test that tells you whether you're watching normal evaporation or paying for a real leak. Here's how to read what your pool is telling you.
How Much Water Loss Is Normal in South Florida?
Evaporation here is real and bigger than most homeowners expect. In a typical Broward County summer, an uncovered pool loses roughly an eighth to a quarter of an inch per day — and a hot, breezy stretch can push that toward half an inch. Over a week, perfectly normal evaporation can drop your pool an inch or two.
Evaporation speeds up when:
- Water is warmer than the air — which is why heated pools and spas lose the most, often overnight
- Wind moves across the surface — screened enclosures cut this substantially
- Humidity drops — those gorgeous dry winter weeks are peak evaporation season
- Water features run — waterfalls, jets, and spillovers add spray and surface area
So a dropping level alone proves nothing. The question is whether your pool loses more than evaporation explains — and that's exactly what the bucket test measures.
The Bucket Test, Step by Step
The bucket test works on a simple principle: water in a bucket sitting in your pool experiences the same sun, heat, and humidity as the pool itself — but the bucket can't leak. Whatever the bucket loses is pure evaporation. If the pool loses more, the difference is a leak.
- Fill a bucket and set it on a pool step. Fill it to 2–3 inches from the rim and place it on the second step so it's partly submerged with the rim above the waterline. Weigh it down if it wants to float.
- Mark both levels. Tape or marker: one mark for the water level inside the bucket, one on the outside for the pool's level.
- Pump off, wait 24 hours. No swimming, no fill hose.
- Compare the drops. Pool dropped about the same as the bucket? That's evaporation — you're fine. Pool dropped noticeably more (a quarter inch beyond the bucket or worse)? You have a leak.
- Repeat with the pump running. This second round localizes the problem: much worse with the pump on points to pressurized plumbing; the same either way points to the shell, skimmer, or fittings.
Two days, a bucket, and a marker — and you'll know more than most homeowners learn in months of wondering.
Reading the Result: Where Leaks Actually Hide
Loss only when the pump runs usually means a pressure-side plumbing leak — return lines pushing water into the ground whenever the system is on. These are the leaks that quietly soak the yard.
Equal loss, pump on or off, points to the structure or static fittings: the skimmer (the single most common leak point in South Florida pools — the plastic skimmer body and the concrete shell expand at different rates and the seam between them opens), light niches, main drains, or cracks in the shell.
Loss that stops at a specific level is a gift: the leak is at that depth. If your pool always settles to just below the skimmer mouth and holds, you've practically diagnosed it yourself.
Other Signs You Have a Leak
Even without a bucket test, these tells point the same way:
- Chemical use creeping up — constant refilling dilutes chlorine, salt, and stabilizer, so you're always adding
- The autofill runs constantly — many Broward pools have autofills that quietly mask leaks for months; your water bill is the witness
- Air in the pump basket or bubbles from the returns — suction-side plumbing pulling in air
- Soggy ground or lush green strips between the pool and equipment pad
- Cracks, or pavers that shift and sound hollow — escaping water erodes the base under decking
What the Pros Do Next
If your bucket test says "leak," resist the urge to guess. Professional leak detection is a process of elimination done with the pool full: pressure testing isolates each plumbing line and reveals which one won't hold; dye testing confirms suspected points like skimmer seams, fittings, and cracks; electronic listening equipment pinpoints underground plumbing leaks to within inches — so a repair means one small, precise opening instead of exploratory demolition.
That "no guesswork, no unnecessary digging" approach is exactly how our pool leak detection service works across Weston, Davie, and Broward County. Most detections finish in a single visit, with a written finding and a repair plan.
Why Waiting Costs More Than the Repair
A modest leak — say a quarter inch a day beyond evaporation on a 15×30 pool — is roughly 2,500 gallons a month. That's water you pay for twice: once on the utility bill, again in the chemicals that constant dilution washes out. Left longer, escaping water undermines deck bases and, in our high water table, can wash fine soil from beneath the shell. What starts as a $400–$600 skimmer repair can mature into resurfacing-adjacent money if the water has been working on your deck for a year.
If you're also seeing surface trouble — stains, roughness — solve the leak first: resurfacing doesn't fix leaks, and new plaster over an active leak is wasted money.
The Easy Version
Run the bucket test this weekend. If it says evaporation — enjoy the pool, and let our weekly maintenance service keep the chemistry ahead of Florida's heat. If it says leak, get in touch — we'll find it precisely, show you exactly what we found, and fix it without digging up half your backyard to look.
