Sewer Inspection Program
The Public Works Department periodically investigates sanitary sewer lines throughout the city. The inspections help pinpoint defects and improper connections that cause stormwater and groundwater to infiltrate the wastewater collection system. The increase in water can overload the region’s wastewater collection and treatment facility.
Staff test for potential problem areas by utilizing closed circuit television, dyed water and isolated smoke testing.
Smoke Test Safety
Smoke testing is endorsed by the U.S. Environmental Protection Agency. The smoke, called Liquismoke, is non-toxic and does not harm plants or animals. The smoke dissipates quickly and does not leave residues or stains.
Smoke Testing Process
Staff use machinery to blow smoke into the sewer lines. During the tests, a non-toxic white smoke will be released into the public wastewater system. The inspection of where smoke emerges helps crews assess the condition of the system and determine specific problems regarding private building sewer connections as well as public sewer in streets and easements.