Summary
This article explains how to shut off the water supply to a sink in the event of a leak or plumbing issue. A short video at the top demonstrates where to find and how to operate the sink shutoff valves.
When to use this
Use this guide if you are:
Experiencing a leak under a sink
Trying to stop water flow quickly
Inspecting plumbing connections for issues
Unsure where the sink shutoff valves are located
Video: Shutting Off Water to a Sink
This video demonstrates how to locate and operate the hot and cold water shutoff valves under a sink.
Overview
Most sinks have individual shutoff valves for both hot and cold water. These valves allow you to stop water flow to the sink without affecting the rest of the house.
Knowing how to operate these valves can help prevent water damage and allow time to address plumbing issues.
Common Questions Covered in the Video
Turning Off the Water to a Sink
The video explains how to:
Locate the shutoff valves beneath the sink
Turn the valves clockwise to stop water flow
Location of Sink Shutoff Valves
Shutoff valves are typically located:
Under the sink
Along the hot and cold water supply lines
Near the wall or cabinet base
Separate Valves for Hot and Cold Water
Most sinks have two separate shutoff valves:
One for hot water
One for cold water
Both valves should be turned off when stopping water to the sink.
What to Do If You Notice a Leak
The video emphasizes:
Turning off the shutoff valves immediately
Avoiding use of the sink
Checking connections once water is off
Checking Valves for Leaks or Corrosion
The video discusses the importance of:
Periodically inspecting valves
Looking for corrosion, moisture, or dripping
Reporting issues early
Preventing Under-Sink Water Damage
The video explains steps such as:
Keeping the area under the sink clear
Checking valves and connections occasionally
Acting quickly if moisture is detected
Operating the Shutoff Valves
The video demonstrates how to:
Turn valves off and on slowly
Avoid forcing stiff or corroded valves
Requesting Maintenance Assistance
The video explains when to:
Submit a maintenance request for leaking or corroded valves
Avoid attempting repairs beyond shutting off the water
Troubleshooting
Valve will not turn → Do not force it
Water still flowing → Both valves may not be fully closed
Valve leaking → Leave water off and contact maintenance
FAQs
Q: Should I turn off both valves if only one side is leaking?
A: Yes. Turning off both hot and cold valves helps fully stop water flow.
Q: Does shutting off sink water affect the rest of the house?
A: No. It only stops water to that specific sink.