Short answer:
To turn your water back on safely, open the main shutoff valve slowly, then gradually turn on faucets starting with the lowest level of the house. This helps prevent pressure surges, leaks, and damage to pipes or fixtures.
Why this matters
When water is turned off, air enters the plumbing system. Turning the water back on too quickly can cause:
- Sudden pressure spikes
- Leaks at weak pipe joints
- Faucet aerators clogging with debris
- Loud banging or vibrating pipes
Taking a few extra minutes can prevent a lot of unnecessary problems.
Step-by-step: how to turn water back on safely
Once the issue is resolved, you can begin turning the water back on. If you haven’t already shut off the supply, start by learning how to shut off water to your house so you know exactly where your main valve is located.
1. Make sure all fixtures are off
Before turning the main valve back on:
- Check that all faucets, showers, toilets, and appliances are fully off
- This prevents water from rushing through the system uncontrolled
2. Slowly open the main water shutoff valve
- Turn the valve slowly, not all at once
- If it’s a wheel-style valve, open it one full turn at a time
- If it’s a lever-style valve, move it gradually toward the open position
You should hear water filling the pipes quietly, not violently.
3. Open the lowest faucet in the house first
- Start with a sink or hose bib on the lowest level (basement or ground floor)
- Turn it on slowly and let air escape
- Expect sputtering or spurting at first — that’s normal
4. Work your way up through the house
After the lowest faucet runs smoothly:
- Move to higher faucets one at a time
- Let each run until the water flows steadily
- Flush toilets after faucets are flowing normally
5. Check for leaks
Once everything is back on:
- Look around sinks, toilets, appliances, and exposed pipes
- Check the area near the main shutoff valve itself
- Small drips often show up within the first few minutes
What not to do
- Don’t open the main valve all at once
- Don’t ignore sputtering or banging noises
- Don’t leave faucets closed while restoring water
- Don’t walk away immediately after turning water back on
Rushing this step is one of the most common causes of post-shutoff plumbing issues.
When to call a professional
Call a plumber if:
- You hear loud banging, shaking, or vibrating pipes
- Water pressure doesn’t return after several minutes
- You notice leaks you can’t stop
- Faucets continue sputtering long after air should be gone
These can indicate damaged pipes, faulty valves, or pressure problems.
Safety notes
- If water was shut off due to a burst pipe or major leak, confirm repairs are complete before restoring water
- Be cautious around electrical appliances if water was involved
- If your home has older plumbing, turn the water on extra slowly
Frequently asked questions
How long does it take for water pressure to return?
Usually a few minutes. Large homes or multi-story buildings may take longer as air works its way out.
Is it normal for faucets to spit air and water?
Yes. Sputtering is expected at first and should stop once air is fully purged.
Can turning water back on damage appliances?
It can if done too quickly. That’s why restoring water slowly and gradually is important.