High Water Bill With No Visible Leak in Fort Myers, FL: What to Check First

Not every shocking bill is a leak. Before you test a single pipe, compare the usage on this bill with the same month last year — gallons (or CCF), not dollars. Rates, tier thresholds, and fixed fees change, and a longer billing cycle can add several days of normal use. Look for the word "estimated" on the statement: an estimated read followed by an actual read can dump two months of under-counted usage into one bill.

One Fort Myers detail catches many homeowners off guard: sewer charges are calculated from your water usage. That means a single hidden leak raises both the water and sewer portions of the bill — which is why a modest leak can produce an outsized total, and why fixing it quickly matters.

This is the same first step every leak detection professional takes, and it costs nothing.

1. Turn off every water-using fixture and appliance: faucets, showers, dishwasher, washing machine, ice maker, irrigation system, and pool auto-fill.
2. Find your water meter — in most Fort Myers neighborhoods it sits in a covered box near the street or sidewalk.
3. Write down the meter reading, or take a clear photo. Note the small triangle, star, or sweep hand — that is the low-flow indicator, and it moves with even a trickle.
4. Wait at least two hours with zero water use. Overnight works even better. Do not flush any toilet during the test.
5. Read the meter again. If the reading changed, or the low-flow indicator is creeping, water is moving somewhere it should not be.

Split the Search: Underground Line or Inside the House?

If the meter moved, one more test cuts your search area in half. Close your home's main shutoff valve (usually where the supply line enters the house or garage) and watch the meter again for 15–20 minutes.

• Meter still moving with the house shut off: the loss is between the meter and the house — an underground supply line leak. This is exactly the kind of problem underground water leak detection is built to pinpoint without digging up the yard.
• Meter stops completely: the leak is inside the home or under the slab, and the fixture checks below come next.

Start with the toilets — a worn flapper or a faulty fill valve is the single most common cause of a mystery high bill, silently sending water from tank to bowl around the clock. Add a few drops of dark food coloring to each toilet tank, do not flush, and wait 15–20 minutes. Color appearing in the bowl means that toilet is leaking.

Then work through the rest of the usual suspects:

• Irrigation system: walk the yard looking for one patch that is greener, softer, or wetter than the rest, and check the controller for extra programmed cycles after storms or power outages — a real issue during Fort Myers' rainy season.
• Pool auto-fill: a stuck auto-fill valve tops the pool up continuously and can quietly add thousands of gallons a month.
• Water softener: a softener stuck in its regeneration cycle drains water for hours at a time.
• Water heater and hose bibs: check the heater's pressure relief valve discharge pipe and every outdoor spigot for slow drips.

If every one of these checks comes back clean but the meter still moves, the leak is almost certainly concealed — in a wall, under the floor, or below the slab — and that is where hidden water leak detection earns its keep.

Fort Myers homes are mostly slab-on-grade construction, and many have decades-old copper or galvanized lines running beneath that slab. Corrosion, shifting sandy soil, and high water pressure slowly open pinholes in those lines. A pinhole leak can lose hundreds of gallons a day — the EPA estimates the average household leak wastes about 10,000 gallons a year, and a slab leak sits at the expensive end of that range. Because the water escapes into the ground, the only early warning most homeowners get is the bill itself. Slab leak detection uses acoustic listening and thermal imaging to locate the break through the concrete, so a repair opens the smallest possible area.

Do-it-yourself checks confirm that you have a leak; they rarely find where it is. Call a professional when:

• The meter test confirms water loss but every fixture check comes back clean
• You feel a warm patch on the floor or hear running water with everything off
• Your bill has climbed two months in a row with no change in household use
• You notice a musty smell, buckling flooring, or a spreading ceiling stain
• Water pressure has dropped noticeably — a sign the underground line is losing serious volume

A professional water leak detection visit uses acoustic sensors, thermal cameras, and pressure testing to pinpoint the failure before anyone cuts, digs, or demolishes — and once it is found, targeted water leak repair fixes the actual pipe instead of a guessed-at section. Ask for the detection findings in writing: many utilities, including those serving Lee County, offer a one-time leak adjustment on your bill when you can document that a hidden leak was found and repaired, so keep the invoice and your meter-test photos.

Whether you live in Downtown Fort Myers, Iona, San Carlos Park, or South Fort Myers, the sequence is the same: check the bill, run the meter test, isolate the zone, then bring in detection equipment for anything still hiding. Every week a hidden leak runs, it is adding to the bill, feeding moisture into your slab and walls, and raising the eventual repair cost.