POSSIBLE CAUSES & NEXT STEPS
Water under the sink: what to check and who can help
What should I do when I find water under a sink?
Avoid using the nearby fixture if that can be done safely, and arrange a plumbing assessment. A wet cabinet can be associated with a supply connection, drain, fixture or nearby equipment; its location alone does not confirm the cause.
Find your next step →Useful observations to share
Use what you already know. You do not need to inspect an unsafe area or reproduce the problem.
- Was the sink or nearby appliance being used when you noticed it?
- Is there a growing puddle, occasional drip, or an old stain?
- Have you noticed the same issue before?
Solutions to discuss
Water appears while a fixture is being used
Describe that timing to a plumber rather than repeatedly running the fixture to reproduce the leak.
Water appears even when the fixture is idle
Tell the plumber that observation too; avoid guessing which connection needs replacement.
The cabinet or surrounding material is wet
Ask whether drying or a separate water-damage assessment is needed alongside the plumbing repair.
Questions for the professional
- Which component is leaking, and how was that confirmed?
- Does the estimate include access, repair and restoring the affected area?
- Who will assess whether nearby materials are still wet?
Common questions
Should I tighten fittings myself?
This guide does not identify the fitting or its condition. If you are unsure, leave repairs to a qualified plumber rather than trying a repair based only on the water location.
Does the water check book a plumber?
No. It provides a possible service category and next step. Provider connections are not available in this release.
Sources and scope
EPA WaterSense recommends addressing identified leaks promptly and notes that puddling and water spots under sinks can help reveal a leak.
These sources support general guidance; they do not validate Clearstep’s screening rules or assess your home. Read our methodology.
Turn your observations into a next step.
Answer a few short questions to see a possible service category. No account or contact details needed.
Start your water check →