Trenchless Technology FAQs

Trenchless technology describes a variety of techniques in the drain, sewer and septic system installation, repair and replacement industry that allow for work to be done without the need to dig a trench in order to access the underground pipes.

For years, the only way to gain access to sewer lines in order to repair or replace them was to dig down to them, resulting in a large, unsightly trench running through your yard. Then the old pipes had to be uninstalled, hauled up and replaced individually. It could be a long process, and all the while you would have this trench on your property until the new pipes were installed and the trench refilled. Even afterwards, the ground took time to settle and you would have to reseed the area later.

However, this inconvenience is often now avoidable, thanks to trenchless technology.

There are a number of trenchless methods available today. The appropriate one to use on a particular job depends on the nature of the work being done, the terrain involved and the state of the existing water and sewer lines, among other factors.

One example of trenchless technology is the use of specialized video cameras to snake down into the lines and inspect for the cause of damage. This allows contractors to get an accurate look at what is causing a problem in the line, which helps them determine how best to proceed.

Another use of trenchless technology is the repair process known as relining. In this process, a sewer line that is leaky or cracked but generally stable can be repaired without needing to be completely replaced. A resin is run through the pipe, then inflated to line the inner walls, which seals off any leaks or cracks.

Trenchless technology can also be used to install new sewer and water lines as well as replace, rehabilitate or repair existing ones.

Yes. Trenchless technology does not involve releasing any hazardous chemicals into the ground. In fact, the process is safer for the environment than conventional methods, as the lack of excavation means less disruption to the ground flora and fauna. Also, a repaired sewer line means no sewage leaking into the surrounding earth or water table.

Using trenchless technology to repair and replace pipes is actually more cost–effective than traditional excavation methods. Digging a trench, replacing old lines and then replacing the displaced soil require a big investment of time, labor and materials. On the other hand, trenchless technology is quicker and less labor–intensive, making it generally more cost effective. The materials involved are also usually less costly than those involved in a traditional sewer line replacement or installation, so you save money on that front as well.

Tending to a leaky or broken sewer line is a necessary cost, as not fixing this problem can result in much more extensive – and expensive – damage. So, it pays to have sewer and water line issues addressed right away. However, choosing trenchless technology can serve to minimize the overall expense, as well as the associated inconvenience and disruption to your family’s daily life.

Choosing a trenchless method for a particular job depends on a number of factors. Aside from the nature of the job and the extent of any damage, a contractor must also consider soil composition, existing materials, depth of the lines and other conditions. The best way to determine which method will work best for your needs is to consult with a licensed professional contractor.