Definition - What does Mains Rehabilitation mean?
Mains rehabilitation is the process of relining, cleaning or otherwise rehabilitating water mains in order to maintain or restore water quality or volume. There are four main reasons why mains rehabilitation would be carried out which include the need to preserve or improve water quality, prevent structural capacity, prevent water loss and to increase the main's capacity.
Trenchlesspedia explains Mains Rehabilitation
Depending on the reason for the rehabilitation, a range of methods can be employed. At times, a thorough cleaning of the main can correct a simple issue. The most invasive method is replacement, but most often rehabilitation can be achieved through relining the main. When relining the pipe, methods such as sliplining, cement mortar lining, epoxy lining and cured in place pipe (CIPP) can be used. If replacement of the water main is deemed necessary, then the methods of pipe bursting, micro-tunneling, horizontal directional drilling or auger boring may be used.