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Edmonton, Alberta

Sewage Backup Cleanup in Edmonton

Sewage backup cleanup in Edmonton: reporting to EPCOR, who owns which part of the sewer line, cleanup costs, and EPCOR's backwater valve subsidy.

Conceptual illustration of snow-season utility cleanout study with drainage folder and meter
Illustrated field guideSnow-season utility cleanout study with drainage folder and meterUtility · private line · winter conditions
Short answer

In Edmonton, report basement flooding from a sewer backup to EPCOR, the city's drainage utility, at 780-412-4500, and call your insurer as soon as possible. Owners maintain the sewer line from the house to the property line, including any backwater valve; EPCOR looks after the pipe from the property line to the main. EPCOR states that cleaning up and repairing the damaged property is the owner's job.

Key takeaways
  • EPCOR runs Edmonton's drainage system; report a sewer backup into the basement at 780-412-4500.
  • The owner's section runs from the house to the property line and includes any backwater valve; EPCOR's runs from the property line to the main.
  • EPCOR charges a fee when prohibited items cause a blockage, wherever in the service line it is.
  • Cleanup and repair of the home are the owner's responsibility, usually through insurance if the policy includes sewer backup.
  • EPCOR's backwater valve subsidy of up to $800 and its free home inspection were listed as available as checked September 2026.
A backwater valve with a clear lid set into a basement floor
IllustrationA backwater valve: a flap that closes when the City sewer surcharges, so sewage cannot come back up.
Building sewer and lateral in cross-sectionA house stack drops to the building drain, passes a cleanout and optional backwater valve, then the lateral slopes under the property line to the municipal main. Ownership typically splits at the property line but varies by municipality. FROST PENETRATION (VARIES) STACK ① CLEANOUT ② BACKWATER VALVE (IF INSTALLED) ③ LATERAL — SLOPES TO THE MAIN PROPERTY LINE ④ MUNICIPAL MAIN OWNER SIDE (TYPICAL) CITY SIDE — CONFIRM LOCALLY
Fig. 1From stack to street: where the building drain, cleanout, backwater valve and lateral sit, and where ownership typically changes hands.

01 /Who do you call for a sewage backup in Edmonton?

Call EPCOR. In Edmonton, the drainage utility is operated by EPCOR, and its basement flooding page asks residents to call 780-412-4500 to report basement flooding from a sewer backup. Then call your insurance company; EPCOR's own advice is that insurers will guide you on cleanup and claims procedures.

  1. Make it safe

    Keep people and pets away, stay clear of wet electrical equipment, and leave if you smell gas.

  2. Stop using water

    EPCOR advises avoiding water use during storms because showers or laundry can cause a backup when the neighbourhood sewer is at or near capacity.

  3. Report to EPCOR

    Use 780-412-4500 and describe which drain overflowed, when, and whether it was raining.

  4. Call your insurer

    Record the claim number and ask about approved cleanup companies.

  5. Photograph before cleanup

    Capture the water, the drain and every damaged item before anything is moved.

The same first steps in more depth, for any city, are in the sewage emergency guide. HAUSE does not operate crews in Edmonton; it is an information and request network, and you can send a request if you want help finding cleanup quotes.

02 /Which part of the sewer line is yours in Edmonton?

EPCOR splits the service line at the property line. Property owners maintain the sewer lines on their property, from the home to the property line, including any backwater valve. EPCOR is responsible for the pipe from the property line to the sewer main in the street or alley.

Edmonton sewer service ownership and costs, from EPCOR's pages
SectionMaintained byCost notes
House plumbing and building drainOwnerOwner's plumber and owner's cost
Service line from house to property line, including backwater valveOwnerOwner's plumber and owner's cost
Service line from property line to the mainEPCOREPCOR may charge if prohibited items caused the blockage
Sewer main in the street or alleyEPCORUtility infrastructure
Cleanup and repair inside the homeOwnerInsurer, if sewer backup coverage applies
Building sewer and lateral in cross-sectionA house stack drops to the building drain, passes a cleanout and optional backwater valve, then the lateral slopes under the property line to the municipal main. Ownership typically splits at the property line but varies by municipality. FROST PENETRATION (VARIES) STACK ① CLEANOUT ② BACKWATER VALVE (IF INSTALLED) ③ LATERAL — SLOPES TO THE MAIN PROPERTY LINE ④ MUNICIPAL MAIN OWNER SIDE (TYPICAL) CITY SIDE — CONFIRM LOCALLY
Fig. 2In Edmonton, the owner's section ends at the property line and EPCOR's begins. The backwater valve sits on the owner's side.

Two EPCOR rules matter when the bills arrive. A fee is charged if a blockage was caused by prohibited items such as rags, paper towels, wipes, hair or grease, regardless of where in the service line it sits. And EPCOR says it will not reimburse private plumber fees, even when the blockage turns out to be in EPCOR's section.

03 /Who pays to clean up a flooded basement in Edmonton?

The owner does. EPCOR's basement flooding page states plainly that residents are responsible for cleaning up and repairing their damaged property. Whether your insurer contributes depends on whether your policy includes sewer backup coverage; the Insurance Bureau of Canada notes that it is optional and not part of a standard policy.

Edmonton basement sewage cleanup: phase by phase
PhaseTypical workWho usually pays
Clearing the lineCable or jetting from the cleanout, ideally with a cameraOwner, unless the cause is on EPCOR's side and not prohibited items
MitigationExtraction, removal of soaked materials, disinfectionOwner or sewer backup coverage
DryingDehumidifiers and air movers with moisture readingsOwner or sewer backup coverage
RebuildInsulation, drywall, flooring, paintOwner or sewer backup coverage, subject to limits
PreventionBackwater valve, sump, gradingOwner, with EPCOR's subsidy where eligible

Edmonton's dry winter air helps drying once the heat is on; summer storm season is harder, because the air is humid and many basements flood at once. Either way, Health Canada's benchmark is to dry materials within 48 hours to limit mould. The drying and mould guide explains how.

04 /How does EPCOR's backwater valve subsidy work?

EPCOR offers up to $800 toward installing an interior or exterior backwater valve, on a first-come, first-served basis, and EPCOR says funding is not assured. As checked September 2026, the requirement for a pre-approval inspection by EPCOR's Flood Prevention team was suspended until further notice, while the other eligibility rules remained in place.

  • The home has no existing backwater valve, and no earlier subsidy was paid for that address.
  • It is a separately serviced single-family dwelling or duplex.
  • The program targets homes built before 1989, homes that flooded from a sanitary sewer backup, and areas with previous neighbourhood flooding.
  • The valve must be one of the models EPCOR lists on its subsidy page.
  • A professional plumber installs it, and the City of Edmonton's inspection acceptance, the green sticker with the permit number, is required.
  • The application goes to EPCOR's Flood Prevention team with the paid invoice and the completed form.

EPCOR also offers a free Flood Prevention Home Inspection to Edmonton homeowners. From April to October it covers inside and outside the home; from November to March it is interior only, with the exterior check later. It includes a review of subsidy eligibility. Booking is through EPCOR's website, by phone at 780-412-4500, or by emailing EPCOR's flood prevention team.

05 /What should Edmonton owners check after the cleanup?

Once the basement is dry, turn to why it flooded. A camera inspection of your section shows roots, grease, a sag or a break; an EPCOR report and your notes on rainfall help show whether the main surcharged.

  1. Keep the camera footage and the drain contractor's invoice with your claim file.
  2. If you already have a backwater valve, have it opened, cleaned and checked; EPCOR notes that when the valve is closed you should not use the toilet, sink, shower, washer or dishwasher.
  3. Walk the outside: eavestroughs, downspouts, window wells and grading all feature in EPCOR's flood prevention advice.
  4. Book the free home inspection if you have not had one.
  5. Review your policy's sewer backup limit before the next storm season.

The cleanup-side view of valves is in backwater valves after a sewage backup.

06 /Does this apply in Sherwood Park, St. Albert or Spruce Grove?

No. Sherwood Park, St. Albert, Spruce Grove and Leduc have separate municipal and utility arrangements. Sherwood Park is in Strathcona County, and each community has its own utility arrangements and any rebate programs of its own. EPCOR's Edmonton rules and subsidy do not automatically apply outside the city.

Calgary owners have a separate Calgary guide, and other cities are on the locations page. For planning numbers, use the sewage cleanup cost guide.

FAQQuestions people ask

What number do I call for a sewer backup in Edmonton?

EPCOR lists 780-412-4500 to report basement flooding from a sewer backup. Call your insurer as well, as soon as you can.

Is EPCOR responsible for cleaning my basement after a backup?

No. EPCOR says residents are responsible for cleaning up and repairing damaged property. Sewer backup insurance, if you have it, may cover part of the cost.

Where does my responsibility for the Edmonton sewer line end?

At the property line. You maintain the line from the house to the property line, including any backwater valve; EPCOR maintains the pipe from there to the main.

Can I get money back from EPCOR for my plumber?

EPCOR says it will not reimburse private plumber fees, even if the blockage is in its section. It may charge you if prohibited items caused the blockage.

Does EPCOR's free flood inspection look at my basement after a backup?

The inspection is a prevention check of drainage inside and, from April to October, outside the home. It is not a cleanup assessment; your insurer and restorer handle that.

Does my Edmonton house qualify for the backwater valve subsidy?

Possibly, if it has no valve, no previous subsidy, and is a separately serviced single-family home or duplex. The program targets pre-1989 homes and areas with past flooding; confirm with EPCOR.

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