I’ve a counter top bath sink and it’s leaking from the top side when not in use. I’ve checked the connections to the faucet and drainage pipes and there are no visible leaks, still tightened them a bit to try and resolve the issue, but it didn’t work. The caulking on the sink is a bit worn, but not sure why water would come out from the side to the counter-top even if the caulking is worn.
It’s not a matter of water spilling out based on usage pattern. The water comes out even during the night when the sink is not in use. Is there a way to identify the source of leak?