Project overview

The City uses smoke testing to find and get rid of connections of “clear” stormwater from the sanitary sewer. During smoke testing, we use non-toxic smoke to identify leaks or faulty connections. These faulty connections may allow rainwater into the sanitary sewer system, which can overflow in a big storm. This work lowers risks to humans and the environment from overflows. It also lowers costs to the City to treat water at the wastewater treatment plant.

During a smoke test, City crews complete the following steps:

• Send white smoke into the sewer system
• Observe as smoke comes out through holes
  • Manhole covers
  • Plumbing vent pipes
  • Other locations where rainwater can get into the sewer system

If we plan to do smoke testing on your street, we'll:

• Notify you by mail
• Provide more information about what to expect