Water around the base of a tap is often caused by a worn O-ring seal, especially on taps with a swivel spout, or by a seal inside the tap body that lets water escape when the tap is running. It can also come from a loose tap, a leaking connection underneath, or simply splashing, so it helps to check when the water appears.
Unlike a drip from the spout, a leak at the base can sit unnoticed and slowly damage the worktop or the cupboard below.
Swivel Spouts and O-Rings
Many kitchen mixer taps have a spout that turns from side to side. Rubber O-rings seal the joint where the spout meets the body. Each time the spout moves, these rings rub a little. Over time they wear, dry out or pick up grit, and water starts to seep out at the joint.
This kind of leak often shows only when the tap is running. You may see water pooling around the base or running down the tap body.
Other Possible Sources
Seals around the cartridge or spindle can also wear. In that case, water may appear around the handle or base when the tap is turned on.
If the tap feels loose or wobbles, the fixing nut underneath may have worked loose. Movement can stress the seals and let water past the base.
Water under the sink that reaches up around the tap hole may not come from the tap at all. A weeping connector, isolation valve or waste joint below can make it look like the tap is leaking from above.
Splashing is another simple cause. Water bouncing off a shallow sink or a strong flow can sit around the base and look like a leak.
How to Check What Is Happening
Dry the tap and the surface around it completely. Turn the tap on and watch the base closely. Then turn it off and check again after a while.
Water that appears only while the tap runs points to a seal in the tap. Water that appears with the tap off suggests a supply connection or a part under pressure. Damp under the sink with a dry tap top may point below the worktop.
Avoid tightening the tap or connections with force, as fittings can crack.
Why It Should Not Be Left
Water that seeps around the base of a tap can soak into wooden worktops, swell chipboard and damage the cupboard below. On some surfaces, it can leave stains that are hard to remove.
If water keeps appearing around the base of your tap, our Oxford leaking tap repairs can find the worn seal or loose fixing and replace the right part, so the worktop and cupboard below stay dry.