Severn Trent Water Hall Mechanical Services Ltd
Unit 25, 40 Sugarbrook Road, Aston Field Industrial Estate,
Bromsgrove, Worcestershire B60 3DN
Tel. 01527 889 580 Fax. 01527 889 590 Email. enquiries@hms-it.co.uk
Underground water repairs ~ Trenchless pipe replacements ~ Water main repairs
 The Environment Agency
Burst water main repair and replacement

Trenchless Technology

Soil displacement is a method for underground pipe installation which has been established for the last three decades and has a number of distinct advantages over traditional methods in cost, time and safety.

Underground trenchless waterpipe mole example

A displacement hammer, driven by pneumatics, creates a cavity underground, ready for pulling in short or long pipes made of plastic (PE, PVC or PE-X) and metal, also any type of cable in drill lengths up to 40 m (depending on the soil quality), either simultaneously or in a second working step.


This allows trenchless traffic route crossings, private service line installations, the preparation of anchoring, by-passing obstacles and supporting further measures as is seen below:

Replacing underground water pipes using trenchless technology

The obvious advantages to this system is the minimal surface disruption required to deploy the 'mole' which both reduces the costs involved in any particular project - costly repair and replacement of surface installations are not required - makes the work of replacing and repairing underground pipework a swifter process - no major earthworks are required or in-filling post-pipework.

Mole boring can save up to 75% in costs compared against a trenching method!