truck and workers infront of sewer line

Sanitary Sewers

Sanitary sewers carry raw sewage from a property to the local treatment facility, where water is treated and recycled.

Connecting to the Sanitary Sewer System

If a sewer line is available to your property, you may be able to connect to that line. Contact the Building Department at 519.360.1998 and request a sewer permit or select permits under useful links for more information.

Request Sanitary Sewer Construction

This is a local improvement. Forward your requests to the Engineering Department at 519.360.1998 or email

Storm Sewers

Storm sewers direct storm water away from property. This water travels back to our local waterways through a series of drains.

Combined Sewers

Combined sewers carry both sewage and storm water to the treatment facilities to be treated and recycled.  Combined sewers are no longer constructed; however, were previously the accepted service level many years ago. There are locations in Chatham-Kent where combined sewers still exist. Combined sewers are more costly to operate as the storm water also goes through the treatment process which is not necessary.

The Municipality is currently involved in sewer separation projects (see useful links - current projects) but it will take many years to totally separate the sewers.

Who is Responsible for Repairs to our Municipal Sewer Systems?

The Public Works Department maintains the portion of the sewer system on municipal property.

You, the property owner, are responsible for the cost of maintaining your connection.

Let us know if you see a storm drain, catch basin, or drainage way that isn’t working properly by calling 519.360.1998 or by e-mail at

Call Before You Clear

Natural gas lines can sometimes unknowingly intersect with sewer lines (known as a "cross bore") beyond the walls of your home. Left undisturbed, cross bores are not an immediate risk. However, they can be dangerous as the equipment used to unclog sewer and septic pipes can easily penetrate a natural gas pipe and lead to the dangerous release of natural gas.

To prevent the risk of a gas leak, contact Ontario One Call at 1-800-400-2255 for a free on-site sewer safety inspection before you or a plumber attempt to clear a blocked sewer or septic pipe outside the wall of your home.

For additional information on cross bore safety, please visit the Union Gas website.