Why a Running Toilet Is a Serious Problem
A toilet that won’t stop running isn’t just an annoyance, it’s one of the most common sources of wasted water in homes. Many homeowners ignore the sound, assuming it’s harmless, but a single running toilet can waste up to 200 gallons of water per day. Over time, that adds up to thousands of gallons and hundreds of dollars lost on your water bill.
Beyond cost, constant running can wear out your toilet’s internal components and cause leaks that go unnoticed until they damage flooring or drywall. At NWA C & S Plumbing, we often find that a running toilet is a symptom of a deeper issue, such as hard-water buildup, worn seals, or improper water pressure.
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The Role of the Flapper Valve
The flapper valve is the most common cause of a running toilet. This rubber seal sits at the bottom of the tank and lifts when you flush, allowing water to flow into the bowl. Once the flush is complete, the flapper is supposed to close tightly to seal off the tank.
Over time, the flapper can warp, crack, or become coated with mineral buildup, especially in areas with hard water, like Fayetteville, Springdale, and Rogers. When this happens, water continues to leak slowly from the tank into the bowl, keeping the fill valve engaged and causing the toilet to run continuously.
Replacing a flapper may seem simple, but not all flappers are interchangeable. Using the wrong size or material can cause the same issue to return. A licensed plumber ensures the proper fit and verifies that no other tank components are failing.
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Faulty Fill Valve or Float Mechanism
If the flapper isn’t the problem, the issue may lie in the fill valve or float. These parts regulate the water level inside the tank.
When the float is set too high, the water level rises above the overflow tube, causing constant water flow into the bowl. Conversely, a faulty fill valve may fail to shut off completely, allowing water to run even when the tank is full.
In older toilets or those exposed to hard water, mineral deposits can clog or damage the fill valve, making it slow to respond. A professional plumber can adjust, clean, or replace these components to ensure proper water regulation.
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Worn Tank-to-Bowl Gaskets and Seals
Another overlooked cause of running toilets is a failing gasket between the tank and bowl. These rubber or foam seals prevent water from leaking during each flush. As they age, they can dry out, crack, or compress, allowing small leaks that keep the toilet refilling continuously.
Because these parts are located between the tank and bowl, repairs involve draining the toilet and removing heavy porcelain components, work best left to a professional to avoid cracks or improper reassembly.
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Problems with the Overflow Tube
The overflow tube inside the tank prevents overfilling by redirecting excess water into the bowl. However, if it’s cracked or improperly installed, it can create a constant water flow that mimics the sound of a running toilet.
A plumber can inspect the tube for damage, adjust its height, or replace it entirely. In some cases, a malfunctioning overflow tube can indicate high water pressure or improper tank calibration, both of which can be corrected during a professional inspection.
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Hard Water and Mineral Buildup
Northwest Arkansas is known for its hard water, which leaves mineral deposits inside plumbing fixtures and toilet tanks. These deposits can cause fill valves, flappers, and other moving parts to stick or fail to seal properly.
Over time, hard water buildup reduces efficiency and leads to more frequent repairs. Installing a whole-home water softener can reduce mineral accumulation, extend the lifespan of your plumbing system, and prevent recurring toilet issues.
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Silent Leaks You Can’t Hear
Not every running toilet makes noise. Some leaks are silent, making them harder to detect until the water bill spikes. A simple test is to add a few drops of food coloring to the tank and wait 15 minutes without flushing. If the color appears in the bowl, water is leaking from the tank—usually through a worn flapper or valve seal.
Professional plumbers use more advanced diagnostic tools to pinpoint internal leaks, even those hidden deep within the toilet assembly.
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The Cost of Ignoring a Running Toilet
While a running toilet may seem harmless, the cost adds up quickly. Continuous water flow not only wastes thousands of gallons each month but also strains your home’s plumbing system. Over time, valves and seals wear out faster, and mineral deposits accumulate more rapidly.
In severe cases, unnoticed leaks can lead to water damage under the toilet base or even into subflooring. Repairs at that stage can be far more expensive than addressing the issue early.
For homeowners across Bentonville and Bella Vista, regular plumbing maintenance from NWA C & S Plumbing helps identify these small problems before they become costly emergencies.
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Why Professional Repair Is the Best Solution
While it might seem easy to adjust or replace toilet parts yourself, many running toilet issues involve precise calibration. An incorrect adjustment to the float or fill valve can lead to more leaks or even damage your toilet’s internal structure.
Our licensed plumbers at NWA C & S Plumbing are trained to identify the root cause quickly and restore your toilet’s efficiency using professional-grade parts. We also check your home’s water pressure, inspect for leaks in nearby plumbing, and ensure your fixtures are working in harmony.
A professional repair not only stops the current problem but helps prevent future ones, saving you time, water, and money.
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Preventing Future Toilet Problems
Preventing a running toilet starts with regular maintenance. Homeowners should schedule professional inspections every one to two years to ensure valves, flappers, and seals are in good condition.
During these visits, plumbers can also clean mineral deposits from your system, check for hidden leaks, and test water pressure to ensure your plumbing stays in top shape. Proactive care can extend the life of your toilet and help you avoid unexpected repairs down the road.
Why Choose NWA C & S Plumbing
At NWA C & S Plumbing, we provide reliable plumbing repair and maintenance for homeowners across Northwest Arkansas. Whether your toilet runs nonstop, your water heater needs service, or your drains are backing up, our licensed and insured professionals can help.
We’re known for our honest recommendations, precise workmanship, and commitment to keeping your home’s plumbing system safe, efficient, and problem-free.
When it comes to fixing a running toilet, you can trust NWA C & S Plumbing to find the cause, fix it right, and help prevent it from happening again.
Conclusion
A toilet that constantly runs isn’t just wasting water—it’s signaling a problem that needs professional attention. From worn parts and mineral buildup to faulty valves, the causes can vary, but the solution is the same: expert plumbing repair.
If you notice your toilet running long after flushing or hear water trickling into the bowl, contact NWA C & S Plumbing today. Our team will inspect, diagnose, and repair the problem quickly, helping you conserve water and lower your utility bills.