Vapor traps 

Also known as P-Traps

How to identify

• U-shaped pipes visible under sinks
• Present in some form on all lines draining into the sewer system

What they do

• Hold water and prevent gas from backing up from sewer

Maintenance tip

• Periodically run water in all bathroom and utility room sinks so your vapor trap doesn't dry out.

If they dry out

• Gases from the sewer system can enter your building 

Roof vents

Also known as vent stacks or exhaust vents

How to identify

• They will be located on the highest point of your roof

What they do

• Allow air to flow in and out of your property's plumbing system
• The air flow helps water flow through your pipes

Maintenance tip

• Check roof vents periodically to make sure they are not blocked by leaves, snow or ice. 

If the vent is blocked

• It can impact the flow in your sewer system.

Basement floor drains

How to identify

If the drain is clogged

• You might hear gurgling noises in your drains or toilets
• Water might begin to collect on the floor
• Sewage can begin to back up