Water around a faucet base can come from an internal seal that leaks while water runs, the joint between faucet and counter, or ordinary splash collecting there. Dry the whole area and watch exactly when moisture returns. That timing prevents dismantling the faucet for a leak that is actually below the sink or coming from the spout.
Dry the base and test the faucet in stages
With everything dry, run cold water, then hot, and rotate the spout if it swivels. Watch whether water appears beneath a handle, from the central body, or at the counter joint.
Water appearing only during use points toward internal seals
Cartridges, O-rings, or spout seals can let water escape toward the base. Identify the faucet model and parts before disassembly. Close the under-sink valves and confirm flow stops before removing components.
Inspect under-sink connections too
A supply-line or shank leak can travel along the underside of the counter and look like a base leak. Use dry paper to trace droplets without approaching wet electrical outlets. Fix the actual source first.
Exterior caulk does not repair a leaking cartridge
Applying caulk around the base can trap water and hide an internal leak. Seal only where the manufacturer calls for it and after repairing the source. If the countertop is swollen or the faucet moves, inspect the mounting as well.
Sources
- U.S. Environmental Protection Agency WaterSense — Home Maintenance — Maintenance guidance for faucets, aerators, leaks, mineral buildup, and water efficiency.