If that’s the case, then it’s possible that water spilled on the countertop has been leaking under the rim of the sink. You can fix this problem by sealing the sink rim to the countertop with silicone sealant. You shouldn’t simply squeeze some silicone caulk around the rim and let it dry, though.
If it’s the sink drain that’s leaking, unscrewing it and repacking it with plumber’s putty will usually fix the problem. Although you usually notice faucet leaks above the sink, sometimes water can flow down the back of the faucet and drip underneath the sink without being visible.
Plumbing work for kitchen sink leakage problem
How To fix a leaking BASIN WASTE – No Leaks GUARANTEED
Frequently Asked Questions
Why is my sink leaking from the top?
A worn-out washer is among the most common causes of leaking sinks. Each time you use the faucet, the washer is pressed against the valve seat. ... Sink leaks caused by worn-out washers can be fixed by simply replacing the washer. Worn-out washers are especially a common problem for compression faucets.
What to do if you have a leak between your sink and countertop?
If you have a leak between your sink and countertop, you probably need to recaulk. Use a putty knife to scrape away the old caulk from around your sink, if present. Cut away the caulk from the sink using a utility knife if the caulk won't peel away. Do not scratch the surface of the sink or the counter with the knife.