Sewer Testing in Dubuque This Week

Through the Inflow and Infiltration (I&I) Reduction Program, the Dubuque Engineering Department will conduct smoke testing in selected areas on Wednesday, Sept. 2. 

Smoke testing of the sanitary sewer system will be conducted in the area bounded approximately by 32nd Street on the south, Central Ave. to the west, Aquin Avenue to the north, and the Heritage Trail to the east. (Click here for announcement and map.) An inspection crew will travel throughout the neighborhood, lifting manhole lids, setting out testing equipment, and entering yards to observe and record the smoke testing.

Smoke testing consists of introducing Hurco LiquiSmoke (manufacturer and product), which is a non-toxic smoke, into sanitary sewer pipe sections under moderate pressure. The crews will document where the smoke is emitted and prioritize needed repairs. Since the smoke will be placed into the sewer system that is connected to homes, residents are encouraged to pour tap water into their floor drains and sinks. This small amount of water creates a seal that keeps the smoke out of the homes. Residents do not need to be present during smoke testing.

Dry traps, drains without traps, and other plumbing defects will allow the smoke to enter the dwelling connected to the sewer line that is being tested. The smoke is non-toxic, leaves no residue, and creates no fire hazard. Should a resident have concerns, please consult the Hurco LiquiSmoke MSDS (Material Safety Data Sheet) for further information. This information can be found at http://www.cityofdubuque.org/1526/Smoke-Testing or you can call the I&I Hotline at (563) 690-6113 or the City Engineering office at (563) 589-4270 for a copy of the Sheets. If a resident is present and smoke enters the house or building, please report all locations to the work crews (563-513-8966) and open a window to allow the smoke to dissipate. It may also be desirable to contact a plumber if the smoke enters the house in a manner other than a dry drain trap.

For more information on the I&I Reduction Program and sanitary sewer smoke testing, visitwww.cityofdubuque.org/iandi or call the I&I information line at 563-690-6113.