Trenchless Technologies: Sewage Systems Leakage, Water Shortages

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Trenchless Technology Systems – An Environmentally Sound Technology for the Installation, Maintenance and Repair of Underground Utility Services

Author            :Dr. John Heavens, Mr. John Castle

Designation    :Technical Secretary/Executive Secretary

Company        :International Society for Trenchless Technology

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Synopsis

Water and sewage infrastructure and other utility services represent a significant investment on the part of most municipalities. For well over 100 years, the distribution networks for utility services have been located underground in pipes or ducts that are laid, repaired or replaced by trenching from the surface. In cities and urban areas, these distribution networks are located underneath roads. This often makes access difficult, particularly in areas congested with traffic and buildings.

When pipeline infrastructure is not well maintained, inefficiencies occur. For example, in water distribution systems, this can lead to leakage and possible water shortages. In sewage systems, cracked and damaged pipes can cause wastewater seepage, leading to contamination of groundwater. These problems often give rise to related health and environmental impacts.

The oldest underground utility services are usually found close to the surface. Services installed later are most often found below or interwoven with the initial installations. Construction and repair work, carried out from the surface, inevitably disrupts traffic, business and other services. This disruption has a negative impact on the local environment in terms of air quality, noise, and other pollution, as well as on local vegetation and buildings. This, in turn, diminishes the quality of life for local residents. Trenchless technologies, which minimise the requirement for surface excavation, can significantly reduce this disruption.

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