What Should I Do If I Find Water Under My Kitchen Sink?

Finding a wet cabinet can be alarming, especially when you cannot see a steady drip. Water may appear only when the faucet runs, when the basin drains or when an appliance operates. First limit further water safely, then gather details without taking the connections apart.

Stop using the sink if it is leaking into the cabinet. Keep away from wet electrical equipment. If you know the correct accessible water shutoff and it operates safely, isolate the fixture without forcing it. Call if the source is unclear or the leak cannot be controlled.

Safety comes before finding the drip

Under-sink spaces can contain disposal wiring, outlets and appliance connections. Do not reach into water near electrical components or operate wet controls. Keep children and pets away. If the leak is active and you cannot safely isolate the supply, seek immediate help. Do not keep using the sink simply because a bucket fits underneath; water can travel behind the cabinet or into an area you cannot see.

The supply and drain behave differently

A supply connection can leak even when the faucet is off because it remains under pressure. A drain connection may show water mainly while the sink empties. Moisture from the faucet base or sink edge can also run down into the cabinet. These are possibilities, not a diagnosis. Tell the plumber when water appears; that observation helps guide which connections need a closer look.

Clear items only if the space is safe

If there is no electrical hazard and the area is accessible, remove stored items that could be damaged. Use towels to contain a small amount of clean water where safe, but do not hide the source behind piles of material. Photograph the wet area before cleaning if you can do so safely. Do not touch wastewater or chemicals without appropriate precautions, and explain if drain cleaner has recently been used.

Do not tighten everything at once

Different fittings use different seals and assembly methods. Overtightening can crack plastic, deform a seal or disturb another joint. Randomly loosening hoses may release pressurized water. Leave connections intact until the source and appropriate repair are understood. A cabinet that contains several wet fittings does not mean all of them failed; water may have traveled from one higher connection.

Think about appliance use without retesting a leak

Notice whether the water first appeared after dishwasher use, disposal operation or filling a large basin. Share that history rather than running everything again to reproduce the problem. If an appliance connection may be involved, mention the model if it is safely available. Do not disconnect equipment to inspect it. The plumbing and appliance portions of a repair may need to be discussed separately.

Explain the damage as well as the leak

Swollen cabinet material, staining or persistent dampness may remain after water stops. Tell the responsible owner or manager if this is a rental or condo, and ask about any further restoration needed. A plumbing repair and cabinet remediation are different tasks. For a Los Angeles service inquiry, provide the neighborhood, whether water is still active and when it appears. Call rather than relying on a form for an urgent leak.

After the water is controlled

Keep the affected fixture out of use until the cause is understood. A dry floor after cleanup is not proof that the leak is repaired. Save photos of the original wet area and note whether water was appearing with the faucet off. If there is a dishwasher or disposal connection nearby, mention it without assuming it is responsible. Confirm who will assess any damaged cabinet or finish separately from the plumbing repair. Those boundaries help avoid confusion about what a visit can address and which related work still needs to be arranged.

Talk through the next step.

For help at your Los Angeles-area home, call 1st Choice Plumbing Services at (213) 424-8544. Describe what you have noticed and confirm service coverage and availability.