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 months of May and June. This work will be concentrated to the following subdivisions: 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 employs 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