Service Line vs. Sewer Backup: What's the Difference?

Service line coverage and water/sewer backup coverage are not the same thing.

Service line coverage addresses covered damage to the underground line running to your house. Water/sewer backup coverage addresses damage when water or sewage backs up through a drain or sump and enters your home. Having one does not mean you have the other.

What does service line coverage cover?

Service line coverage is an endorsement you can add to many homeowners policies. It is designed for certain failures of underground utility lines you're responsible for, such as the water or sewer line running from the street to your home. Depending on the endorsement, coverage can include excavation, repair or replacement of the damaged line, and some restoration after the work is done.

What does water/sewer backup coverage cover?

Water/sewer backup coverage is a separate endorsement. It addresses damage caused when water or sewage backs up through a drain or sump into your home. That can mean flooring, drywall, furniture, electronics, stored belongings, mechanical equipment, and specialized sewage cleanup and sanitization.

Why would someone need both?

Because the losses are different. A sewer line can break outside without sewage ever backing up into the basement. Sewage can also back up into the house even when the underground service line itself hasn't physically failed. One endorsement does not substitute for the other.

How much water/sewer backup coverage should I carry?

Start with what is actually in your basement. If you have a finished basement, think about flooring, drywall, built-ins, furniture and electronics. But don't stop there. Finished or not, think about tools, stored belongings, your furnace, water heater and anything else you would have to clean, repair or replace. Then add the cost of sewage cleanup and sanitization. That's what should drive the conversation about your backup limit.

What about a sump pump?

How sump-pump failure or overflow is treated depends on the endorsement. Check how your policy defines water/sewer backup and whether sump-pump failure is included, excluded or subject to a separate condition or limit.

The bottom line

Service line coverage protects one exposure. Water/sewer backup protects another. Look at both separately and decide whether each exposure matters for your home rather than assuming one endorsement covers every problem involving a pipe or drain.