Turn off the faucet but not the water supply.
Bathroom water leak sink.
Bathroom sink leaks are usually caused by a bad drain pipe loose pipe connection or leaky sink drain flange.
3 the nut may not be tight enough and water is simply coming through.
1 water may leak in between the threads on the nut and the drain pipe if no plumbers tape was applied.
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2 the rubber sealing washer or o ring may be squeezed excessively tight causing leakage.
Investigate appliances and fixtures.
To fix your leaking faucet turn the pipes below the sink to turn off the water and plug the drain with a rag.
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For water supply leaks run your fingers over the lines to find out which one is damp.
For trap leaks turn on the water in the sink while checking the drain trap beneath for drips.
Dribble water around the sink rim and look for leaks photo.
How to fix it.
4 the drain pipe is off center and therefore.
If the leak does not come from any of these locations it can come from the connection between the connector and the water supply lines.
Underneath the sink check where the leak comes from.
If there is a set screw behind the handle insert a hex key or allen wrench into the screw and turn it to remove.
Tighten the faucet base by turning the mounting nuts underneath it.
If the water meter test indicates a leak inside your home check the cabinets under the kitchen laundry and bathroom sinks to make sure they re dry.
It can be directly under the faucet or the handles.
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Insert a sink stopper or cover the sink opening with a towel to prevent any tools from falling down the drain as you make your repairs.
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Step 1 inspect the leaks.
Bad sink drain flange step 1 shut off the water to the house.
If the sink rim is caulked scrape away the old caulk and recaulk.
2 remove the handle how you remove the handle depends on your faucet type.
Fill the sink with water and determine where your particular leak is located.