Category: Prevention Tips

Most Edmonton homes have a hot water tank in the basement mechanical room, often right next to a finished rec room or basement suite. When a tank fails, it can release its full 40–60 gallons, plus a continuous flow from the cold supply until someone shuts it off. Here’s how to respond, how to spot a failing tank early, and how to avoid a soaked basement.

Emergency Steps When a Water Heater Leaks

1. Shut off the cold water supply to the tank (the valve on the pipe entering the top). If you can’t find it, shut the main water valve.
2. Turn off the energy source: for a gas tank, turn the gas control to “off” or “pilot”; for an electric tank, switch off the breaker.
3. Keep clear of hot water. It can scald.
4. Drain the tank with a hose from the drain valve to the floor drain once the water has cooled, if you’re comfortable doing so.
5. Photograph the tank, its label (age/model) and the damage.
6. Call a plumber for the tank and a water damage restoration company in Edmonton to extract and dry the basement.

If you smell gas, leave the house and call the gas utility’s emergency line from outside.

Warning Signs Your Tank Is Failing

• Age: many tanks last roughly 8–12 years. Check the label for the manufacture date.
• Rust on the tank, fittings or in your hot water
• Moisture or small puddles around the base
• Popping or rumbling sounds, often from sediment buildup, which is common with Edmonton’s moderately hard water
• Dripping from the temperature/pressure relief valve
• Less hot water than usual

What Water Heater Damage Typically Costs

In an unfinished mechanical room, extraction and drying may be $2,000–$4,000. If water spread under walls into a developed basement, expect $4,000–$10,000+ with repairs. See the Edmonton cost guide.

Is It Covered by Insurance?

A sudden tank failure is usually covered as a sudden and accidental loss, though the tank itself typically isn’t. A tank that had been slowly leaking for weeks may not be. Some insurers ask about tank age at renewal, and older tanks can affect coverage. Check your policy and see our claim documentation checklist.

Prevent a Water Heater Flood

• Replace proactively as the tank approaches 10–12 years.
• Install a drain pan plumbed to a floor drain under the tank.
• Add a leak sensor with automatic shut-off on the cold supply.
• Flush the tank annually to reduce sediment.
• Test the relief valve once a year.
• Consider a tankless system when replacing. There’s no stored water to dump.
• Keep the area clear of boxes and stored items that wick water.

Condos and Rentals

In-suite tanks in condos can damage units below. See condo water damage and the $50,000 deductible rule. Landlords, see rental property water damage.

It’s -32°C, you turn on the kitchen tap, and nothing comes out. In Edmonton, that usually means one of two things: a pipe inside your home has frozen, or the water service line that runs underground from the street has frozen as frost drives deep into the ground. The first is the bigger water damage risk, because when an indoor pipe thaws, it can burst. Here’s how to tell which one you’re dealing with, and what to do.

Is It an Indoor Pipe or the Service Line?

Clue	Likely indoor freeze	Likely service line freeze
Which taps are affected?	One or a few taps (often on exterior walls)	No water anywhere in the house
Where are the pipes?	Exterior walls, over the garage, crawlspace	Underground, from the street to your basement
Neighbours affected?	Usually not	Sometimes, during long deep-frost stretches
Water damage risk	High when it thaws and bursts	Lower, but no water for days is its own problem

If you have no water anywhere, contact EPCOR. They can help determine whether the freeze is on the utility side or your side of the property line, which affects who arranges the thaw.

If an Indoor Pipe Is Frozen

1. Find your main shut-off (usually in the basement where the line comes through the floor or wall, near the meter) and be ready to close it.
2. Open the affected tap to relieve pressure.
3. Warm the pipe gently with a hair dryer or space heater at a safe distance. No open flames, ever.
4. Watch for leaks as it thaws. If water appears, shut the main immediately.
5. If the frozen section is inside a wall or ceiling, call a plumber.

If a Pipe Has Already Burst

1. Shut off the main water valve and the water heater.
2. Cut power to wet areas from a dry spot.
3. Keep the heat on so more pipes don’t freeze.
4. Photograph the damage and the burst section.
5. Call a plumber and a water damage restoration company in Edmonton. Water from a burst pipe runs inside walls and ceilings and needs professional drying.

Edmonton Homes Most at Risk

• Bonus rooms and bathrooms above attached garages, common in newer neighbourhoods like Windermere, Chappelle, Allard and The Orchards
• Older homes with pipes in poorly insulated exterior walls, in areas like Highlands, Westmount and Bonnie Doon
• Homes with basement rim joists that were never insulated
• Homes left empty during winter holidays
• Infill homes where service lines were relocated

Winter Prevention Checklist

• Keep the thermostat at 18°C or higher during cold snaps, day and night.
• Open sink cabinet doors on exterior walls.
• Let a pencil-thin stream run overnight on at-risk taps.
• Insulate rim joists and exposed pipes; add heat trace cable where needed.
• Disconnect hoses and shut off outdoor taps in the fall.
• Install a smart thermostat with low-temperature alerts and leak sensors with auto shut-off.
• If you’re away, have someone check daily, and check your policy’s rules for unoccupied homes. See our insurance guide.

What Burst Pipe Restoration Costs

A one-level burst pipe typically costs $4,000–$9,000 to restore; more if it ran for hours or hit multiple floors. See the Edmonton cost guide. Quick drying also prevents mould.

Edmonton homeowners can get money back for flood-proofing through two EPCOR programs: the Backwater Valve Subsidy (up to $800) and the RainWise Rebate (up to $2,000 for single-family homes). If your basement has flooded before, or you live in an older neighbourhood, these programs can take a big bite out of the cost of preventing the next one. Programs, amounts and eligibility can change and funding is limited. Always confirm current details directly with EPCOR before starting work.

1. EPCOR Backwater Valve Subsidy (up to $800)

A backwater valve is a one-way valve on your main sanitary sewer line. When the sewer system surcharges during a heavy storm, it closes to stop sewage from flowing back into your basement. It’s the single most effective protection against sewer backup.

Who’s eligible (as currently posted by EPCOR)

• Home built before 1989
• Has previously flooded from a sanitary sewer backup, or is in a flood-prone neighbourhood
• No existing backwater valve
• Hasn’t received the subsidy at that address before
• Single-family home or separately serviced duplex

How it works

1. Hire a professional plumber to install an approved valve model.
2. Get the work permitted and inspected by the City of Edmonton.
3. Apply to EPCOR with the permit information, a paid invoice and the application form.

Subsidies are first-come, first-served while funding lasts.

2. EPCOR RainWise Rebate (up to $2,000)

RainWise is a pilot program that rewards Edmonton property owners, and renters, for projects that keep stormwater out of the system and away from homes. Examples of eligible work include:

Project	Rebate (as posted)
Downspout disconnection	Up to $100 per downspout
Rain barrels / storage tanks	$0.25 per litre of storage
Low impact development (e.g., rain gardens)	$11 per m² of connected hard surface

Caps: $2,000 single-family, $5,000 multi-family, $10,000 commercial. Approval is required before you start, and projects must be finished within a year.

Which Homes Benefit Most?

Older Edmonton neighbourhoods with combined or older sewer systems, and areas that have seen repeat storm flooding, gain the most from a backwater valve. Homes with downspouts dumping right beside the foundation or onto driveways benefit from RainWise projects.

Other Low-Cost Ways to Protect Your Basement

• Extend downspouts at least 1.8 m from the foundation.
• Fix negative grading so the ground slopes away from the house.
• Clear snow away from the foundation before the spring melt.
• Test your sump pump each spring and keep the discharge line clear of ice.
• Don’t pour grease down drains; flush only toilet paper.
• Keep valuables in plastic bins off the basement floor.
• Ask your insurer about sewer backup and overland flood coverage.

If You’ve Already Flooded

Rebates are for prevention. If water’s in your basement now, the priority is extraction and drying before mould sets in. Read what to do when your Edmonton basement floods, check typical costs, or call for 24/7 water damage restoration in Edmonton.