Triage by symptom
Use the table below to triage the most common after-hours plumbers emergencies. Each row tells you what to do before a pro arrives — these are the actions that protect your property, your family, and your bill while dispatch is en route.
| Symptom | What to do right now |
|---|---|
| Burst pipe with active flooding | Shut off the main water supply at the meter immediately. Call a 24/7 plumber. Most arrive within 60–90 minutes in major metros. |
| Sewer line backup into the home | Stop using all drains. Open windows for ventilation. Do not flush. A camera-equipped plumber is needed within hours to prevent black-water damage. |
| No hot water (gas leak smell) | Leave the home, shut off the gas at the meter if safe to do so, and call your gas utility before any plumber. |
| Frozen and bursting pipes (winter) | Shut main water off. Apply a heat lamp or hair dryer to the frozen section, never an open flame. Call an emergency plumber to assess for hidden burst points. |
| Water heater leaking from the tank | Cut power (electric) or gas, shut off the water inlet on the heater. Tank failures usually mean replacement within 24 hours. |
How fast will a plumber actually arrive?
During business hours, Home Trades Nearby-listed emergency plumbers typically respond within 30–60 minutes in major metros, 60–120 minutes in smaller cities. After-hours dispatch adds a $90–$180 callout fee but prevents thousands in water damage. Search online for "emergency plumber near me" or ask a contractor you already trust for an after-hours referral.
What an after-hours plumber should cost
Emergency dispatch fees range from $90 to $180 in most metros, and that fee is typically credited toward the repair if the pro performs the work that night. The repair itself is priced like a normal job — see our plumbing cost guide for the line-by-line averages. Be wary of any pro who quotes a "we're out anyway" overnight call without a written estimate; emergency does not mean cash-only.
What to ask before they start
Even in an emergency, a 30-second checklist will save you hours of headache later: confirm a current state license, ask for a written estimate before they touch anything, ask whether the dispatch fee credits toward the repair, and ask for a 24-hour follow-up window so you can confirm the fix held. The full plumber hiring checklist walks through every question and the red flags to watch for.