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“DOES IT LEAK” A NEW METHOD THAT LEAVES THE GUESSWORK OUT OF IDENTIFYING LEAKY JOINTS OF SANITARY SEWERS

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Abstract:

A new method has been developed in Europe for identifying potential leaks in sanitary sewers (including joints, mainline and service connections). The First units are just arriving in the U.S. A pilot demonstration project has been completed in Louisville (Louisville & Jefferson County Metropolitan Sewer District). The results are exciting. Results of this and several other demonstration projects will be discussed.

Basically, the method locates leaks by pulling an electrode that emits electronic fields into the sewer system with pipe acting as an insulator. The rise and fall of the electrical signal as the probe passes through the sewer indicates potential sources of infiltration, as well as the magnitude of the leak.

The purpose of this paper is to discuss this technology as well as its limitations. The discussion will be done through several case studies including:



Identifying leaking joints on mainline during dry weather.


Prioritizing leak repairs by intensity of readings.


Determining if service laterals leak.


Use of the technology as an alternative of accepting new and rehabilitated sanitary sewers.


This paper is based on using the Focused Electrode Leak Location system (FELL-41).

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864702785300656

Publication date: January 1, 2002

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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