The short answer
Common Causes
A dripping handle often traces to a small rubber O-ring or washer that has dried out, cracked, or shifted out of place. These parts sit inside the handle assembly and create a watertight seal. Over time, normal use and temperature changes wear them down.
Another frequent culprit is a loose packing nut or a worn cartridge in a single-handle faucet. Mineral deposits from hard water can also prevent parts from seating fully. Each of these issues lets water escape around the stem and out from under the handle.
- Worn O-ring or washer
- Loose packing nut
- Cracked or dirty cartridge
- Mineral buildup from hard water
- Improperly seated handle
How to Check Yourself
Start by turning off the water supply valves under the sink. Open the faucet to release any pressure and residual water. Then remove the handle screw, which is often hidden under a decorative cap. Pull the handle straight off to expose the valve stem.
Look for visible wear, cracks, or mineral deposits on the O-ring and other rubber parts. If you see damage, replacing the O-ring or cartridge is a simple fix. If the parts look fine but the leak continues, the problem may be deeper inside the valve body.
If you live in Rowlett, keep your shutoff valve location written down. That way you can act quickly to stop water when a leak appears.
When to Call the Pros
Some leaks come from a corroded valve seat or a crack in the faucet body itself. These issues are not always visible from the outside and may require disassembling the entire fixture. A plumber can handle that repair if you are not comfortable with the work.
If water has already soaked into the cabinet or the floor, the damage may go beyond the faucet. The pros can assess how far moisture has spread and recommend drying or repairs. Acting quickly helps limit the extent of the damage.
Water that runs under the sink can warp wood, stain drywall, or attract mold. A water damage inspection can identify hidden moisture and help you decide on next steps.
Preventing Future Leaks
Regular maintenance can keep handle leaks at bay. Check the handle for tightness every few months and tighten the packing nut gently if it feels loose. Clean mineral deposits from the handle area with a soft cloth and mild cleaner.
Replace O-rings and cartridges at the first sign of wear, rather than waiting for a drip to start. If you have hard water, consider a water softener to reduce mineral buildup. These simple steps can extend the life of your faucet.
Also, know where the main water shutoff is for your home. That knowledge helps you stop water fast in an emergency.
Handling Water Damage
If the leak has been going on for a while, water may have soaked into the cabinet base, subfloor, or wall cavity. Even a small drip can cause significant damage over time. Look for soft spots, discoloration, or a musty smell near the sink.
The pros can extract standing water, dry out wet materials, and map moisture levels to find hidden dampness. They can also help with drywall repair if water stained or warped the wall. The cost depends on the extent of the damage and the materials involved.
Policies vary, and your insurer decides what is covered.
Need help right now?
Phones are answered 24/7 for Rowlett and nearby communities.
Call Now (214) 730-5993Frequently asked questions
Can I fix a leaking faucet handle myself?
Yes, if the cause is a worn O-ring or loose packing nut. You need basic tools and the right replacement parts. Turn off the water first. If the leak persists or the faucet body is cracked, call a plumber.
Why does my faucet handle leak only when the water is on?
That suggests the leak is from the valve stem seal, not the supply lines. When water pressure increases, it forces water past a worn O-ring or cartridge. Replacing those parts usually stops the leak.
What should I do if water has damaged the cabinet under the sink?
Dry the area thoroughly and look for warping or mold. If the damage is extensive, the pros can extract water, dry the space, and repair the cabinet. Act quickly to prevent further issues.