The City of Oak Ridge Public Works Department continues to utilize state-of-the-art technology to perform inspections of the City’s sewer system. Testing is ongoing but will be dependent on weather constraints and other factors throughout the rest of the month of April 2016. This work will be concentrated on the west end, including all of the sewer lines west of Montana Avenue except for the
Westwood Estates, Southwood and Country Club Estates subdivisions. Residents will notice signage posted on main roads stating, “Acoustic Sewer Inspection in Area” while crews are working in their neighborhoods.

This technology uses a sonar machine that emits a repeating series of tones, similar to a musical scale and in open areas can be heard over long distances. The tones emitted by the machine, while harmless, are low enough in frequency that residents nearby may be able to feel and, in some instances, hear them.

Questions can be directed to the Public Works information line at (865) 425-3619 or email

More specific information may also be found on our website at