When to Call an Emergency Plumber (and When It Can Wait Until Morning)
When to Call an Emergency Plumber. Plumbing problems have a habit of surfacing at inconvenient times, and it's not always obvious whether a given issue justifies an emergency callout or can reasonably wait until the next business day. Calling unnecessarily means paying a premium for after-hours service, but waiting on a genuine emergency can turn a manageable problem into serious water damage. Here's how to tell the difference.
True Emergencies: Call Immediately
A Burst Pipe
A burst or actively spraying pipe can release many gallons of water per minute, and the damage compounds by the minute. Shut off your main water supply valve immediately, then call an emergency plumber. Don't wait to see if it "settles down" — it won't.
Sewage Backup
Water or waste backing up from a drain, especially from multiple fixtures at once, is a health hazard as well as a plumbing one. Avoid using any drains in the house until a plumber arrives, since running more water can make the backup worse.
No Water at All
A total, sudden loss of water throughout the house (as opposed to gradually reduced pressure) can indicate a major supply line failure and warrants a same-day call, particularly if it coincides with signs of water pooling somewhere unexpected, like a yard or under a slab.
Gas Smell Near a Water Heater or Gas Line
This is as much a safety emergency as a plumbing one. Leave the house, avoid using any switches or open flames, and call your gas utility's emergency line as well as a licensed plumber. Don't attempt to investigate the smell yourself.
Flooding From Any Source
Whether it's a failed water heater, a burst supply line, or a sump pump failure during a storm, active flooding inside the home justifies an emergency call to limit structural and mold damage, which gets dramatically more expensive the longer water sits.
Urgent, But Can Often Wait for Regular Hours
A Single Slow or Clogged Drain
Annoying, but rarely urgent, especially if you have another sink or bathroom you can use in the meantime. Try a natural unclogging method overnight and call during business hours if it doesn't clear.
A Running Toilet
Wastes water and money over time, but doesn't pose an immediate risk to your home. This can comfortably wait for a scheduled appointment, or you may be able to fix it yourself.
Low Water Pressure
Unless it's a sudden, total loss of pressure alongside other warning signs, gradually reduced pressure is a comfort issue rather than an emergency and can be scheduled normally.
A Dripping Faucet
Wasteful and worth fixing soon, but a slow drip from a single faucet essentially never justifies an after-hours premium.
How to Decide in the Moment
- Is water actively escaping somewhere it shouldn't be, and can't be stopped by closing a valve? That's an emergency.
- Is there a health or safety risk (sewage, gas smell)? That's an emergency.
- Can you isolate the problem (shut off a valve, avoid a fixture) and still use the rest of your home normally? It can likely wait.
- Is the issue purely about comfort or cost over time, not immediate damage? Schedule it for regular hours.
What to Do While You Wait for Help
For most emergencies, the single most useful thing you can do before the plumber arrives is locate and shut off your main water supply valve. Knowing where it is before an emergency happens, rather than searching for it during one, can save significant water damage in the critical first few minutes.