Drains & sewer

The network that carries waste water out of your home, including traps and vents that keep sewer gas from coming back in.

Typical lifespan40–80 years

How it works

Every fixture has a U-shaped trap that holds a little water. That water plug is what blocks sewer gas from entering the room. Vent pipes let air into the system so drains flow smoothly instead of gurgling and siphoning those traps dry.

Keeping it healthy

Run water in rarely used fixtures monthly to keep traps full
Avoid pouring grease down kitchen drains
Use strainers to catch hair and food
Have the main line inspected if you have mature trees nearby

Warning signs

Slow drains throughout the house
Gurgling sounds from other fixtures when one drains
Sewer odour indoors
Water backing up in tubs or showers

Common problems

Why does my bathroom smell like sewage?

$150–$600

How do I fix a slow or clogged drain?

$125–$800

Why is my water pressure low?

$150–$900

Track this in your home

Add your drains & sewer to HomePro and it tracks age, warranty, service history and what's due next.

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