What it means
Smoke testing pressurizes the DWV system with visible smoke. Smoke escaping from roof vents, wall cracks, or yard soil shows where pipes are open, cracked, or illegally tied to storm drains.
It helps locate elusive sewer odors when camera and water tests fail. Occupants should be notified because smoke may enter through dry traps if they are not primed.
Why it matters in Santa Cruz County
Commercial kitchens and multi-family buildings in Santa Cruz use smoke tests during remodel inspections. Older hillside homes with DIY additions sometimes reveal vent cuts or cross ties only under smoke testing.
Homeowner tip
Pour water into floor drains before a scheduled smoke test so smoke does not enter living spaces through dry traps.
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Related glossary terms
Also explore the Septic Glossary or call 831.225.4344 with questions about your property.