Imagine stepping out of a refreshing shower, feeling rejuvenated after a long, exhausting day, only to realize that the water won’t stop running. This frustrating issue can disrupt the tranquility of your home and may even lead to costly water bills. So, what causes this persistent problem? Your shower may be continuously running due to a malfunctioning shower valve, a worn-out cartridge, a damaged seal or washer, elevated water pressure, or improper installation. Additionally, sediment buildup or a faulty shower diverter could also be contributing factors. If you’re faced with this dilemma, it’s essential to identify the underlying cause and apply the necessary fixes.
Reasons Your Shower Won’t Stop Running and Their Fixes
| Problem | Possible Causes | Recommended Fixes | |
| 1. | Faulty Shower Valve | Wear and tear Mineral buildup Corrosion |
Clean the shower valve Repair or replace damaged parts or the valve |
| 2. | Worn-Out Cartridge | Mineral or sediment deposits Deformities Normal wear |
Clean or replace the cartridge |
| 3. | Damaged Seal or Washer | Wear and tear | Clean the seals and washers for minor issues Replace damaged seals and washers |
| 4. | High Water Pressure | Install or ensure your pressure-reducing valve is functioning well | |
| 5. | Sediment Buildup | Clean the showerhead Flush the pipes Replace severely affected parts |
|
| 6. | Faulty Shower Diverter | Mineral buildup Wear Internal damage Incorrect installation |
Clean the shower diverter Replace the shower diverter |
| 7. | Incorrect Installation | Misaligned parts Loose connections Improperly fitted components |
Adjust and realign components |
1. Faulty Shower Valve
A malfunctioning shower valve is one of the primary reasons for a shower that won’t stop running. Over time, valves can degrade due to wear and tear or become clogged with mineral deposits, disrupting the proper regulation of water flow and temperature. To diagnose the issue, inspect the valve for visible damage, leaks, or signs of corrosion. Turn off the water supply to the shower, disassemble the valve, and examine its internal components for any damage or buildup.
Fix
- Clean the Valve: Utilize a vinegar solution or a commercial descaler to eliminate mineral buildup from inside the valve. Follow up with a brush to scrub away any stubborn deposits.
- Repair or Replace Damaged Components: If the washers or O-rings are the culprits, replace them according to the manufacturer’s instructions. Repair kits may be available to assist with common issues.
- Valve Replacement: In cases of severe damage, consider replacing the entire valve. A suitable option is the Kohler K-GP77759 Mixer Cap For Pressure Balance 1/2” Shower Valve (View on Amazon), which is compatible with most shower valves and features a temperature limit stop.
2. Worn-Out Cartridge
If you notice continuous dripping or water flow even when the shower handle is turned off, a worn-out cartridge might be the culprit. Disassemble the faucet handle to carefully inspect the cartridge for any signs of damage or mineral buildup, such as cracks or deformities.
Fix
- Clean the Cartridge: Soak the cartridge in vinegar to dissolve mineral deposits, then scrub it gently to remove any remaining debris.
- Replace the Cartridge: If cleaning doesn’t resolve the issue, replace the cartridge. Refer to the faucet manual or bring the old cartridge to the store to find an appropriate replacement.
3. Damaged Seal or Washer
Though small, seals and washers play a critical role in controlling water flow and preventing leaks when the faucet is turned off. Over time, these components can wear down, leading to unwanted drips or leaks. To inspect for damage, disassemble the faucet handle and check the seals and washers for any signs of wear or deterioration.
Fix
- For minor issues, cleaning may suffice to remove debris or buildup. However, if the seals or washers are severely damaged, replace them. Ensure you identify the correct size and type by consulting the manufacturer’s manual or taking the old parts to a hardware store.
4. High Water Pressure
Maintaining the recommended water pressure in your home is essential for the longevity of your plumbing. Excessively high water pressure can stress various fixtures, resulting in leaks or constant flow. To determine your water pressure, use a gauge (ideally, it should be between 40-60 psi). Signs of high pressure include dripping faucets and noisy pipes.
Fix
- Install a pressure-reducing valve to keep water pressure within the recommended limits. If unsure, consult a plumber to assess whether a pressure-reducing valve is necessary.
5. Sediment Buildup
Sediment accumulation in your shower’s plumbing system can obstruct the flow of water, resulting in continuous running. Signs include reduced water flow or visible debris in the water. Examine the showerhead and valves for any sediment buildup.
Fix
- Clean the Showerhead: Detach the showerhead and soak it in vinegar or a descaling agent to dissolve deposits. Scrub any remaining sediment with a toothbrush.
- Flush the Pipes: Remove valves or components and flush out any accumulated debris using clean water. A pipe brush can help dislodge stubborn deposits.
- Consider installing a water softener to reduce future sediment buildup.
- Establish a routine cleaning schedule for your showerhead and valves to prevent accumulation.
- If you face extensive buildup, consider replacing affected components or fixtures.
6. Faulty Shower Diverter
If your shower features a tub/shower combination, a malfunctioning diverter may be to blame for continuous water flow. This could result in water running through the showerhead even when the faucet is turned off. To diagnose, inspect the diverter for damage, leaks, or operational issues. Potential causes include mineral buildup, wear, internal damage, or incorrect installation.
Fix
- Clean the diverter to eliminate any obstructive debris or mineral buildup.
- If the diverter remains problematic after cleaning, consider replacing it with a new, compatible model.
7. Incorrect Installation
Continuous water flow can also indicate improper installation of the shower fixture. Check for misaligned parts, loose connections, or components that aren’t fitted correctly.
Fix
- Identify and rectify any installation errors by adjusting and realigning components according to the installation instructions.
How to Tighten a Loose Showerhead
If a loose showerhead is the reason for your continuously running shower, follow these steps to fix it:
Tools
- Adjustable wrench or pliers
- Pipe tape or thread sealant (if necessary)
Steps
a) Turn Off the Water
Before beginning any work, stop the water supply to the shower at the main shut-off valve.
b) Remove the Showerhead
Detach the showerhead from the arm by turning it counterclockwise. If it’s stuck, use a wrench or pliers, with a cloth for protection to avoid scratches.
c) Inspect the Shower Arm
Check the shower arm for any damage or corrosion. If it shows signs of wear, you may need to replace it.
d) Clean the Threads
Thoroughly clean the threads on both the showerhead and shower arm to remove any debris or old tape. A vinegar soak followed by scrubbing with a toothbrush can be effective.
e) Apply Pipe Tape or Thread Sealant (Optional)
Wrap plumber’s tape around the threads of the shower arm or apply thread sealant if needed to prevent leaks.
f) Reattach the Showerhead
Screw the showerhead back onto the arm, tightening by hand. Use a wrench or pliers for a snug fit, being careful not to overtighten and damage the threads.
g) Turn On the Water
After securely reattaching the showerhead, restore the water supply and check for leaks. If everything is secure and leak-free, you’re good to go!
Final Remarks on Shower Won’t Stop Running
The reasons behind a shower that won’t stop running can range from simple wear and tear to more complex plumbing issues. Thankfully, many of these problems can be addressed with a bit of troubleshooting and DIY effort. Once you resolve the issue, regular maintenance and prompt attention to any emerging problems will help keep your shower functioning smoothly.
Also, consider reading:
- Can You Remove Apartment Shower Heads?
- How To Fix A Leaking Hansgrohe Shower Valve