What if a test yields no smoke defects?
Obviously, if the sanitary sewer line and the lateral are in good condition, and there are no drainage facilities connected to them, the smoke has no place to go other than up the house vent stack, as it is supposed to. However, sometimes the smoke doesn't appear at all even though there is a defect. The Sewer Division crews are trained to identify these "suspect" situations and performed a dye test to conclusively determine whether the suspect is positive or negative. But this is a subject for its own set of QAs.

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1. What is the benefit to my city for performing a Smoke Test?
2. What exactly is a Smoke Test?
3. How will my residents know when Smoke Testing will be performed in their neighborhoods?
4. How are Sewer Division crews recognizable in the field?
5. Is the smoke that you use hazardous?
6. Do my city's residents have to do anything to prepare their homes for Smoke Testing?
7. What if smoke comes out of a resident's yard or driveway?
8. If there is smoke in the resident's yard, does that mean the cause of the leak needs to be dug up?
9. Does the resident need to be home when the Smoke Testing is performed?
10. What if a test yields no smoke defects?