Certified Building Contractor CBC1265305 · Plumbing
Why is my water bill suddenly higher when I'm not using more water?
A straight answer from a Florida state-certified contractor — then what you can check yourself and when to call. Free estimate: (954) 620-7812.
The most likely cause is a leak you can't see or hear, such as a toilet that keeps refilling, a dripping supply line, a leaking irrigation line, or a break in a pipe under the slab or in a wall. Water that runs out unnoticed is still metered and billed, so the bill climbs even though your habits haven't changed.
The nuance is that not every jump is a leak. A bill can also rise from an estimated meter reading, a change in the utility's rates or billing period, or seasonal irrigation. A quick meter check, described below, separates a leak from those causes.
Why a hidden leak raises the bill
A toilet flapper that doesn't seal, a pinhole in a copper line, or a failed joint adds up across a whole billing cycle, even if you never see a puddle. Most of these leaks are slow and quiet.
In Florida homes, some leaks are harder to spot. Slab leaks, where a supply line under a concrete floor fails, can run for a long time with no visible water. Older supply materials such as galvanized and polybutylene lines can wear out or fail at fittings. A water heater with a weeping tank or a dripping relief valve discharge line can also lose water steadily.
Outdoor water counts too. A broken irrigation head or a cracked line on the way to a sprinkler zone can use a lot of water, and the meter doesn't care whether it runs inside or outside the house.
What you can check yourself
Do a meter test
Turn off every faucet and appliance, then look at your water meter. If the leak indicator is moving, or the reading changes after a short wait, water is going somewhere.
Test the toilets
Put a few drops of food coloring in each tank and wait without flushing. If color shows up in the bowl, the flapper is leaking.
Look at the water heater and under sinks
Check for dampness, rust trails or dripping at the tank, its relief valve discharge line, and the supply connections under sinks.
Check irrigation and outdoor spigots
Look for soggy spots, unusually green patches, or sprinkler heads that run or seep when the system is off.
Read your bill closely
Compare the usage amount, not just the total, with earlier bills. Check whether the reading was estimated or the billing period changed, and ask your utility if it's unclear.
When to call a pro
If the meter keeps moving with everything off and the toilets and outdoor lines check out, the leak is probably inside a wall, under the slab, or underground. Warm spots on a floor, the sound of running water in a quiet house, damp baseboards, or low water pressure all point the same way. Finding those leaks takes equipment and shouldn't be done by cutting into walls or floors on a guess.
For homes in Miami-Dade, Broward and Palm Beach counties, we manage the project under our Florida Certified Building Contractor license (CBC1265305). The plumbing itself is done by our Florida-licensed plumbing subcontractors, as Florida law (s. 489.113(3), Florida Statutes) has building contractors do. Plumbing is a licensed trade in Florida, and you can check any contractor's license on the DBPR website.
Permits depend on the repair. Fixing a leak or swapping a toilet or faucet in the same spot usually doesn't need one, but rules vary, so confirm with your local building department. Water heater replacements and re-piping typically do, pulled by the licensed plumber, then inspected and closed out. Unpermitted or open permits can come up at sale, refinance or insurance renewal and may be cited by code enforcement.
Verify our building certification, or any Florida plumbing contractor's license, at Florida DBPR.
What a pro will do
- Locate the leakThe plumber uses leak detection methods to pinpoint where water is escaping, including under a slab, so repairs are targeted and the opening in finishes is kept small.
- Repair or replace the failed partThat can mean a toilet or fixture repair, a section of supply line, a water heater component or a full water heater replacement, depending on what is found.
- Recommend re-piping when it makes senseIf supply lines such as galvanized or polybutylene are failing repeatedly, re-piping may be a better fix than patching one leak after another.
- Handle the permit and inspectionsFor permitted work, our plumbing subcontractors pull the permit, schedule inspections and see the permit closed out.
- Repair what the leak damagedBecause we manage the whole project, drywall, flooring or cabinetry opened up or damaged by the leak can be handled under the same written scope.
Related questions
- Can a toilet leak really raise my bill that much?
- Yes. A toilet that refills silently runs constantly, and over a billing cycle it can use a large amount of water. It's also one of the easiest leaks to test and fix.
- How do I know if I have a slab leak?
- Common signs are a moving meter with all fixtures off, warm spots on the floor, the sound of running water, or damp flooring. A plumber can confirm it with leak detection before any floor is opened.
- Will my water bill go down once the leak is fixed?
- Usually the usage returns to your normal level on the next billing period. Your utility can explain whether any adjustment program exists for leak-related usage.
- What does it cost to find and fix a hidden leak?
- It depends on where the leak is, how easy it is to reach, the pipe material, whether a permit is needed, and what is found once the area is opened. We give a free estimate and a written scope before work starts. Call (954) 620-7812 or use the quote form.
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