Every Palmetto Bay pool owner notices it eventually. The water level is lower than it was yesterday. Before you panic — or ignore it entirely — some water loss is completely normal in South Florida, and some is a warning sign that can turn into a costly repair if left alone. The tricky part is knowing which is which.

Here's how to tell the difference.

What's Normal: Evaporation

In Palmetto Bay's subtropical climate, evaporation is the number one cause of water loss. South Florida's combination of intense heat, high humidity, and strong afternoon winds pulls water out of your pool faster than most homeowners realize.

During peak summer months, a Palmetto Bay pool can lose one to two inches of water per week to evaporation alone. That works out to roughly 25 to 50 gallons per day for a standard residential pool. If your pool is heated, uncovered, or gets a lot of wind exposure — common in Palmetto Bay's more open, waterfront-adjacent properties near Biscayne Bay — evaporation runs even higher.

This is normal. It doesn't mean anything is wrong with your pool.

What's Also Normal: Splash-Out and Backwash Loss

Two other sources of routine water loss that homeowners sometimes mistake for a leak:

Splash-out is exactly what it sounds like. Active swimmers displace a surprising amount of water over the course of a swim session. A busy weekend afternoon can account for several inches of water loss on its own.

Backwashing your filter releases water intentionally to flush debris out of the system. Depending on your filter type and how long you run the backwash cycle, this can account for 200 to 300 gallons of water loss in a single session — a noticeable drop in pool level that is completely routine.

The Bucket Test: How to Know If You Have a Leak

Before calling a pool professional, do this simple test at home. The bucket test is the standard first step for distinguishing evaporation from a real leak.

Fill a plastic bucket with pool water and set it on your pool step so the bucket is partially submerged. Mark the water level inside the bucket and the pool water level on the outside of the bucket with tape or a marker. Turn off your autofill valve if you have one, and leave everything — including your pump — running normally for 24 hours.

After 24 hours, compare the two levels. If the pool has lost significantly more water than the bucket, you likely have a leak. If the levels dropped by a similar amount, what you're seeing is normal evaporation.

Repeat the test with the pump off for another 24 hours. If the pool loses more water with the pump running than with it off, the leak is likely somewhere in your circulation system — plumbing, fittings, or equipment. If loss is similar either way, the shell or a static component is the more likely culprit.

What's Not Normal: Signs You Have a Leak

A typical Palmetto Bay pool should not lose more than about a quarter-inch of water per day to evaporation under normal conditions. If you're seeing consistent loss beyond that — especially if the bucket test confirms it — something is wrong.

Here are the most common sources of real pool leaks:

Shell cracks. Palmetto Bay's soil is predominantly limestone-based, and South Florida's water table fluctuates significantly — especially around heavy rain events. Ground movement, even subtle settling, can crack a pool's plaster or gunite shell over time. Cracks are often small and hard to spot, but they allow water to escape steadily. Look for visible cracks along the floor, walls, or steps, and pay particular attention to corners and the areas around steps and fittings.

Plumbing leaks. Underground plumbing runs beneath your pool deck connecting the pump, filter, and return lines. Ground shifting, root intrusion from Palmetto Bay's tree landscape, and general wear on fittings and joints can all cause plumbing leaks that are invisible from the surface. A plumbing leak is more likely if your bucket test shows greater loss with the pump running than with it off.

Equipment leaks. Pumps, filters, heaters, and valves all have seals, O-rings, and fittings that degrade over time. Check around your equipment pad for pooling water, moisture stains, or white calcium deposits, which are signs of a slow drip.

Leaking light fixtures. Pool lights are sealed penetrations in the pool shell. The conduit behind a light fitting is a common and frequently overlooked leak point. If you notice your water level consistently dropping to a specific point and then stabilizing — often right around the level of a light fixture — this is a strong indicator the light housing or conduit is the source.

Damaged or worn fittings. Skimmer baskets, return jets, and main drains all have gaskets and fittings that can crack or deteriorate. A leaking skimmer is one of the most common leak sources in residential pools and is relatively straightforward to repair when caught early.

Why Palmetto Bay Homeowners Should Act Quickly

Water loss might seem like a minor inconvenience, but in Palmetto Bay the stakes are higher than in many other areas.

Palmetto Bay's proximity to Biscayne Bay and its high water table mean that ground conditions are more sensitive to changes in moisture than in drier, inland areas. A slow pool leak can saturate the surrounding soil, destabilize your deck, undermine your pool shell's structural support, and - in extreme cases - cause the pool to shift or heave as the waterlogged ground moves. What starts as a quarter-inch-per-day leak can become a significant structural repair if ignored over months.

Palmetto Bay's mature tree landscape adds another complication. Root systems from the neighborhood's large ficus, mahogany, and banyan trees are aggressive and can infiltrate cracked plumbing lines or widen hairline shell cracks over time, accelerating damage considerably.

The bottom line: a leak that costs a few hundred dollars to repair today can cost several thousand dollars six months from now.

Quick Reference: Normal vs. Not

Normal water loss in Palmetto Bay: up to one to two inches per week from evaporation, plus splash-out and backwash losses.

Not normal: consistent loss beyond a quarter-inch per day after accounting for evaporation, wet spots around the equipment pad, cracks visible on the shell or deck, water level that drops and stops at the same point repeatedly, or a pool that requires frequent topping off to stay at the correct level.

When in doubt, do the bucket test first. If it confirms a problem, call a local pool professional sooner rather than later. In Palmetto Bay's environment, leaks rarely stay small for long.