Is your bathtub faucet still running while the shower is on? This problem wastes water, reduces shower pressure, and can signal worn-out parts inside your faucet. The most common culprit is the diverter valve — the part that redirects water from the tub spout to the showerhead. Thankfully, this issue is very common and can often be fixed without replacing the entire system. But if your faucet is old or corroded, an upgrade may be the smarter choice.
Why Does Water Still Come Out of the Tub Spout?
When you pull up the diverter knob, the tub spout should completely block water and send it to the showerhead. If water continues to run, here’s why:
- Worn diverter valve – Seals wear out over time and can’t hold back water fully.
- Mineral buildup – Hard water deposits keep the diverter from sealing properly.
- Damaged spout – Cracks or corrosion allow water to bypass the valve.
- Incorrect installation – A poorly fitted spout may leak from day one.
How to Fix a Bathtub Faucet That Still Runs in Shower Mode
Before calling a plumber, try these steps:
- Turn off the water supply. Always shut off water before removing any faucet parts.
- Check the diverter knob. Make sure it lifts and stays engaged properly.
- Remove and clean the spout. Unscrew or slide it off and soak it in vinegar to dissolve mineral deposits.
- Replace the diverter spout. If cleaning doesn’t work, install a new tub spout with a built-in diverter.
- Test your shower. If the faucet still runs, the issue may be inside the wall valve — which usually means replacement is best.
When to Replace Instead of Repair
Repairs work if your faucet is relatively new. But replacement is the better option if:
- The faucet is more than 10 years old.
- The finish is chipped, rusted, or outdated.
- The diverter has failed multiple times.
- You want an upgraded style and better water control.
Modern bathtub and shower faucets have improved diverters and water-saving features that reduce waste and perform better long term.
Best Bathtub & Shower Faucet Replacements
Moen Adler 82604 Tub and Shower Faucet
Best Overall for everyday use and reliability.
- Pressure-balancing valve to keep water temperature stable.
- Includes diverter spout and matching showerhead.
- Available in multiple finishes (chrome, brushed nickel, bronze).
Pros:
- Durable and affordable
- Consistent shower pressure
- Simple installation
Cons:
- Basic showerhead (upgradeable)
- Valve installation may need a plumber
Verdict: A solid, all-purpose upgrade that solves diverter issues. Check Price on Amazon.
Delta Faucet Windemere Tub and Shower Trim Kit
Best for traditional bathrooms with timeless design.
- WaterSense certified for water efficiency.
- Includes tub spout, showerhead, and handle trim.
- Available in oil-rubbed bronze for rustic appeal.
Pros:
- Classic, elegant look
- Durable construction
- Water-saving features
Cons:
- Valve sold separately
- May require professional installation
Verdict: A stylish upgrade for long-term durability. Check Price on Amazon.
Grohe Concetto Pressure Balance Tub & Shower Faucet
Best Luxury Choice for high-end remodels.
- German-engineered with precise water control.
- Chrome finish resists tarnishing and scratches.
- Pressure-balancing valve ensures smooth temperature control.
Pros:
- Premium build quality
- Modern, sleek design
- Excellent leak and noise resistance
Cons:
- Higher upfront cost
- Usually requires a plumber for install
Verdict: Perfect if you want a spa-like, noise-free upgrade. Check Price on Amazon.
Comparison Table
| Faucet | Key Features | Style | Price |
|---|---|---|---|
| Moen Adler | Pressure balance, diverter spout | Modern | $$ |
| Delta Windemere | WaterSense, trim kit | Traditional | $$$ |
| Grohe Concetto | Luxury pressure balance, chrome finish | Luxury | $$$$ |
FAQ
1. Is it normal for a little water to drip from the tub spout during a shower?
A small trickle is normal, but if water pours steadily, the diverter is failing.
2. Can I fix this without replacing the whole faucet?
Yes — replacing just the tub spout with a new diverter spout often solves the issue.
3. How long do diverter spouts last?
Typically 7–10 years, depending on water quality and frequency of use.
4. Do new faucets prevent this problem?
Yes, modern faucets use ceramic disc valves and improved diverters that resist leaks and last longer.
Conclusion
If your bathtub faucet still runs when the shower is on, the diverter isn’t sealing properly. Cleaning or replacing the tub spout often fixes it, but if your faucet is old, a full replacement is a better long-term investment.
Restore water pressure and stop the waste — shop the best bathtub and shower faucets on Amazon today and enjoy a leak-free shower for years to come.