Why You Need Service Line Coverage in Canada

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First published on May 27, 2026

2 minute read

✎ Updated By Vitalii Starov on July 8, 2026

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Many homeowners are surprised to find out that service lines are their responsibility. If they get damaged, repairs can be expensive and may not be covered by the municipality or a standard home insurance policy.

Who Is Responsible for Service-Line Repairs?

In many municipalities, homeowners are responsible for the underground water and sewer lines that run from the property line to the home. Responsibility boundaries vary, so check with your municipality or utility.

Service-line failures can happen without warning because of freeze-thaw cycles, shifting soil, old pipes, corrosion or tree roots.

Repairing an underground line can get expensive because the work may require excavation, permits, skilled workers and heavy equipment.

The Insurance Blind Spot

Underground service lines may not be covered under your home insurance policy, leaving you responsible for repairs or replacement.

In many cases, an endorsement can be added to your home insurance policy to cover service-line repairs up to a stated amount.

The Underground Repair Costs Most Homeowners Don't Expect

What Is Service Line Coverage?

Service-line coverage is an extra option that may be added to a home insurance policy. Depending on the insurer, the endorsement may cover sewer or septic lines, water lines, underground electrical or telecommunications lines, and ground-loop piping.

Many homeowners only discover the gap after receiving a large excavation bill.

Some municipalities partner with external providers, such as Service Line Warranties of Canada, to offer residents optional repair plans for private water and sewer or septic lines. The responsibility boundary and available plans vary by municipality.

These plans may operate differently from insurance policies and are often structured as repair service agreements.

Some insurance endorsements may also cover outdoor property damaged by a service-line failure or excavation, such as landscaping or a driveway. Coverage depends on the policy wording.

Sewer Backup Coverage vs. Service Line Coverage

 Sewer-backup coverageService-line coverage
Type of coverageOptional insurance endorsementOptional insurance
endorsement or service
agreement
What it coversWater or sewage damage inside the home
caused by a sewer backup or overflow
Repair or replacement
of covered outdoor
service lines between
the home and the
municipal connection
point
What it may pay forCleaning and replacing
damaged floors, walls
or furniture, subject
to the policy
Excavation, pipe
repair or replacement
and certain outdoor
restoration costs,
subject to the
endorsement or
agreement
Coverage amountCoverage amounts varyCoverage amounts vary.

Sewer-backup coverage deals mainly with resulting damage inside the home. Service-line coverage deals mainly with the damaged underground line. Depending on what happened, one, both or neither may apply.

Why Service Lines Are at Risk

Water and sewer service lines can clog, leak or rupture. These problems may result from freeze-thaw cycles, soil movement, corrosion or tree-root intrusion. Failing to address minor leaks can also lead to greater damage later.

Underground wiring and cables can also deteriorate or develop faults.

In some Canadian cities, the age of the infrastructure is another concern. In many cases, pipes are decades old, putting them at risk of deterioration from soil movement, temperature changes and demand.

Why Repairs Become Expensive

Because service lines are underground, repairs may require excavation, specialized labour, equipment and permits.

The County of Brant says a water-line replacement averages $2,600 in its service area. This is a local figure rather than a Canadian average.

The cost can vary widely depending on the type and age of the pipe, the extent of the damage, its depth and how difficult it is to access. Removing and restoring driveways, landscaping or other surfaces can add to the bill.

With over 20 years of experience in business, finance, and insurance writing, Helen specializes in translating complex industry topics into clear, reader-friendly content that helps consumers better understand financial decisions.

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