Burst Pipe or Sewer Backup: What to Do in a Plumbing Emergency Before the Plumber Arrives
What Counts as a Plumbing Emergency?
Not every plumbing issue requires an urgent response, but some situations should always be treated as emergencies. Calling an emergency plumber right away is generally recommended if you are dealing with:
- A burst pipe releasing water into walls, ceilings, or living spaces
- A sewer backup is causing wastewater to rise through drains, toilets, or floor drains
- An overflowing toilet that does not stop after shutting off the fixture valve
- Rapid water pooling that threatens electrical outlets or appliances
- Strong sewage odours or visible contamination
In these situations, delaying action can increase the risk of structural damage, mould growth, and contamination.
What to Do in a Plumbing Emergency Before the Plumber Arrives
Taking the proper steps immediately can help reduce damage and keep the situation under control until an emergency plumber arrives.
Step 1: Shut Off the Main Water Valve
If water is actively flowing from a burst pipe or fixture, locate and shut off your home’s main water valve as soon as possible. This stops additional water from entering the system and limits ongoing damage.
Step 2: Turn Off the Water Heater (If Applicable)
If the emergency involves hot water lines or significant leakage, turning off the water heater can help protect the system. Follow the manufacturer’s instructions and avoid touching electrical components when water is present. If you are unsure how to do this safely, leave it off and inform the plumber.
Step 3: Contain the Water
Use buckets, towels, or absorbent materials to control spreading water. Even basic containment can help protect flooring, drywall, and nearby belongings while professional help is on the way.
Step 4: Relieve Pressure Only for Clean-Water Leaks
If the issue is a clean-water supply leak, such as a burst pipe, opening a faucet or outdoor spigot away from the affected area may help relieve pressure in the system.
Do not do this during a sewer backup, as opening drains can cause wastewater to spread further into the home.
Step 5: Take Photos for Insurance
Once the immediate situation is stabilized, take clear photos or videos of visible damage. The Insurance Bureau of Canada notes that documentation is essential when filing a home insurance claim for water damage or a sewer backup.
Why Burst Pipes and Sewer Backups Occur in Niagara Homes
Several local factors can increase the risk of emergency plumbing issues, including:
- Aging water and sewer lines in established neighbourhoods
- Tree root intrusion into older underground pipes
- Seasonal temperature changes that stress plumbing materials
- Mineral buildup that restricts pipe flow
These conditions make quick action and proper emergency response essential.
What Not to Do During a Plumbing Emergency
Specific actions can worsen the situation or create safety risks:
- Do not use chemical drain cleaners during a sewer backup or overflow
- Do not attempt to dismantle plumbing, sealed panels, or fixtures
- Do not restore water service before a professional inspection if damage is suspected
Health Canada advises that improper use or mixing of household chemical products can pose safety risks and may damage plumbing systems.
Homeowner OK vs. Professional-Only Actions
Homeowner OK
- Shutting off the main water valve
- Containing water with towels or buckets
- Taking photos for insurance documentation
Professional Only
- Sewer backup clearing
- Pipe repairs or replacements
- Electrical or structural assessments related to water damage
If wastewater is present, limit contact and keep people and pets away from affected areas.
When to Call an Emergency Plumber
If you are unsure whether a situation qualifies as an emergency, it is generally safer to call. Situations involving uncontrolled leaks, wastewater, or repeated overflows should always be treated as urgent.
An emergency plumber can assess the issue, stop the source of damage, and recommend next steps for cleanup and repair.
Be Prepared Before the Next Emergency
Knowing where your main water shut-off is located and having a basic emergency plan can make a significant difference when plumbing issues arise. Acting quickly and seeking professional help early can reduce damage and stress.
Mr. Furnace provides emergency plumbing services to Niagara homeowners when urgent issues arise.