Toilet Keeps Running? Why It Happens, What It’s Costing You, and How to Fix It

Nathanael Jolteus • December 16, 2025

If your toilet keeps running, it’s not just an annoying background noise, it’s one of the most common and expensive plumbing problems homeowners ignore.


A running toilet can quietly waste thousands of gallons of water per month, driving up your water bill and stressing your plumbing system.


In South Florida, running toilets are especially common due to mineral-heavy water, aging toilet components, and high humidity that accelerates wear inside the tank.


Let’s break down what’s really happening and why fixing it sooner rather than later matters.


1. What “Running” Actually Means

A running toilet isn’t always obvious.

It may:

  • refill every few minutes

  • make a faint hissing sound

  • run silently into the bowl

  • cycle on and off by itself

Many homeowners don’t notice it until the water bill spikes.


2. Worn Flapper (Most Common Cause)

The flapper seals water inside the tank.

Over time, flappers:

  • warp

  • harden

  • crack

  • collect mineral buildup

When the flapper doesn’t seal properly, water slowly leaks from the tank into the bowl , triggering constant refilling.


South Florida’s mineral content shortens flapper lifespan significantly.


3. Faulty Fill Valve

The fill valve controls how water enters the tank.


When it fails:

  • it doesn’t shut off completely

  • water continues flowing

  • the tank overfills slightly

  • excess water escapes into the overflow tube

This creates a continuous or intermittent running sound.


4. Improper Water Level

If the water level in the tank is set too high:


  • water spills into the overflow tube

  • the fill valve keeps activating

  • the toilet never fully “rests”

This is a simple adjustment , but it’s often overlooked.


5. Chain or Flapper Interference

Something as small as the chain can cause big problems.

If the chain:

  • is too short

  • gets tangled

  • wedges under the flapper

…the flapper can’t seal, and the toilet runs continuously.


6. Cracked Overflow Tube

A cracked or damaged overflow tube can:

  • allow water to bypass the flapper

  • cause constant refilling

  • require replacement of internal components

This is more common in older toilets.


7. How Much Water a Running Toilet Wastes

This surprises most homeowners.


A running toilet can waste:

  • 200–300 gallons per day

  • 6,000–9,000 gallons per month

  • 70,000+ gallons per year

That’s money literally going down the drain.


8. Why This Is So Common in South Florida

Running toilets are more frequent here because:

  • minerals degrade rubber parts faster

  • humidity accelerates component wear

  • older homes still use outdated toilet internals

  • sediment buildup interferes with seals

Many toilets fail years earlier than expected.


9. DIY Checks You Can Do Right Now

You can safely check:


✔ remove the tank lid and observe refilling

✔ listen for hissing when not in use

✔ add food coloring to the tank (without flushing)

✔ watch for color entering the bowl

✔ check if the handle sticks


If dye appears in the bowl → the flapper is leaking.


10. Why Ignoring a Running Toilet Is Risky

Beyond higher bills, running toilets can:


  • stress the fill valve until it fails completely

  • cause internal leaks

  • waste treated drinking water

  • mask larger plumbing issues

  • hide pressure problems

It’s a small fix that prevents bigger problems.


11. When Replacement Makes More Sense

Sometimes replacing parts isn’t enough.


Replacement is often recommended if:


  • toilet is 15+ years old

  • multiple components are failing

  • cracks are present

  • parts are no longer compatible

  • water efficiency is poor

Modern toilets use far less water and perform better.


12. What We Do (Professional Repair)

At Leading Plumbing Services, we:


  • diagnose the exact cause

  • replace worn flappers and valves

  • adjust water levels properly

  • test for silent leaks

  • inspect tank integrity

  • recommend upgrades when needed

  • ensure the toilet shuts off completely

We stop the water waste , permanently.


13. Prevention Tips

To prevent running toilets:


✔ replace flappers every few years

✔ avoid harsh tank cleaners

✔ address mineral buildup early

✔ listen for silent refilling

✔ upgrade outdated toilet internals


Preventive maintenance saves water and money.


South Florida Homeowner Reality

In South Florida, a toilet that keeps running is one of the most common causes of unexplained high water bills,  and one of the easiest problems to fix when caught early.


Most homeowners wait too long.


Final Thoughts

If your toilet keeps running, it’s costing you money every day , even if you don’t hear it.


Fixing it now is one of the fastest ways to lower your water bill and protect your plumbing system.


 Call/Text us today for toilet repair or replacement:



(561) 506-6159

The Little Valve Under Your Sink Is Leaking. Here's When to Worry

By Nathanael Jolteus • September 5, 2026
You reach under the sink for something and notice a puddle. Then you see it: water collecting around the small shutoff valve coming out of the wall. It may only be dripping now, but a leaking shutoff valve, also called an angle stop, deserves attention because it's connected directly to your home's pressurized water supply. Here's what to do. FIRST: Figure Out How Serious the Leak Is A few drops around the valve stem is different from water spraying from the connection. If it's actively spraying or the leak is getting worse: -Stop using the fixture. -Put a container or towels underneath if safe. -Don't repeatedly open and close an old or corroded valve. -Shut off the home's main water supply if you cannot control the leak locally. If water is reaching an electrical outlet or appliance, keep away from affected area and address the electrical hazard safely. WHY Do Shutoff Valves Start Leaking? These valves can sit untouched for years. Then one day they're operated and suddenly begin dripping. Possible causes include: A worn valve stem or seal. Internal components deteriorate with age. A leaking connection. Water may be escaping where the valve connects to the supply pipe or fixture supply line. Corrosion. An older valve or connection can weaken enough to begin leaking. A failing supply line nearby. Sometimes the valve isn't actually the source. Water from the flexible supply line above it runs downward and makes the valve appear responsible. That last possbility is why finding the exact leak point matters. When Is This an Emergency? Call a plumber promptly if: -water is spraying instead of dripping -the valve won't completely shut off; - the valve looks heavily corroded; -the leak suddenly becomes worse; -the wall or cabinet is getting wet; -the connected supply line is bulging or damaged; or - you can't stop the water A slow drip may not require a middle-of-the-night response, but it shouldn't be forgotten either. Water leaking inside a cabinet can damage wood, drywall and flooring before the problem looks serious from the outside. DON'T DO THIS If an old valve feels stuck, don't put excessive force on it with pliers. The goal is to stop a leak, not turn an aging valve or connection into a broken pressurized line. If you're unsure, isolate the home's water supply and have the valve inspected. A Small Part Can Still Cause a Big Mess Shutoff Valves are easy to overlook because they're small. But they're also supposed to be your first line of defense when a toilet, faucet or appliance develops a leak. If the shutoff itself doesn't work when you need it, you lose that protection. That's a good reason to repair a leaking or unreliable valve before the next plumbing problem happens. Need a Plumber for a Leaking Shutoff Valve in South Florida? Leading Plumbing Services can identify whether the leak is coming from the valve, connection or supply line and repair the actual source. Call or text Leading Plumbing Services @ 561 506 6159 If water is actively escaping and the fixture valve won't stop it, shut off the main water supply if you can safely do so and get plumbing help as soon as possible. Author: Nathanael Jolteus

Shower Won't Turn Off? Here's What To Do Before the Bathroom Floods

By Nathanael Jolteus • September 4, 2026
You turn the shower handle to OFF. The water keeps running. You try it again. Nothing. Ugh so annoying. If your shower won't turn off, don't keep forcing the handle. A failed cartridge, valve , or internal component may be preventing the water from shutting off, and a small repair can become a much bigger problem if something breaks behind the wall. Here's what to do. FIRST: STOP the Water If the shower is running normally into an open drain, you have a little time. But you still want to stop the flow as soon as possible. If you know where your home's main water shut off valve is, turn it off. Then: - Keep the shower drain clear -Move anything that could block the drain. -Don't remove the shower handle or valve while the water is still on. -Don't force a stuck handle with tools. If water is escaping outside the shower or entering a wall, treat it as an active plumbing emergency. Why Won't the Shower Shut OFF? Usually , the problem is inside the shower valve. Common possibilities include: A failed cartridge. The cartridge controls water flow and temperature. When it wears out or breaks, turning the handle may no longer stop the water. A damage valve stem or internal component. The handle can move normally while the parts behind it no longer respond correctly. Mineral buildup. Deposits can interfere with moving components and make an aging valve harder to operate. A broken handle connection. Sometimes the handle turns, but it isn't actually moving the valve mechanism behind the wall. The important part: don't assume you need to replace the entire shower valve until the problem has been properly diagnosed. When Should You Call an Emergency Plumber? Get help quickly if: - the shower is running at full flow and won't stop - the main shutoff doesn't work; -the water is leaking from behind the handle or wall; - the shower is overflowing because the drain can't keep up; -you hear water running inside the wall; or - shutting off the shower affects the rest of the plumbing unexpectedly. If the water is safely draining, you may have time to arrange a repair, but leaving the shower running wastes water and puts unnecessary stress on the situation. ONE Mistake to Avoid Don't start taking the valve apart while the plumbing is pressurized. Removing the wrong component with the water supply is still on can turn a shower that won't shut off into water spraying directly from the wall. Get the water isolated first. Diagnose second. Need Help With a Shower That Won't Turn Off in South Florida? A shower that keep running is frustrating, but the solution may be relatively straightforward when it's handled before additional damage occurs. Leading Plumbing Services LLC can diagnose the valve, determine what actually failed, and make the appropriate repair. Call or text Leading Plumbing Services: 561 506 6159 If water is actively escaping into the bathroom, wall or surrounding rooms, shut off the home's water supply if you can safely do so and get plumbing help right away. Author: Nathanael Jolteus