Dewatering & Groundwater Control
WJ Canada offers complete dewatering systems and groundwater control services ranging from design, installation, testing and maintenance for all aspects of dewatering and groundwater control. To learn more about the types of dewatering available, please select a service type below.
What is Dewatering and Groundwater Control?
Dewatering systems are routinely used in the construction industry to provide temporary reductions in groundwater levels for structures which extend to below groundwater level.
Groundwater control extends this definition to encompass any pumping or recharge system used to manipulate groundwater levels for a range of purposes.
This can be achieved in a variety of ways.
The Different Methods of Dewatering & Groundwater Control
The simplest form of groundwater control is sump pumping where groundwater is collected in a sump and pumped away from the excavation site. Sump pumping can be hugely cost effective, but excessive seepage and ground loss into the excavation can be both expensive and time consuming to deal with and can pose a real threat to the instability of the ground and adjacent structures. To avoid this risk, it may be necessary to use a pre-drainage method. This involves lowering the groundwater levels in advance of excavation.
Pre-drainage methods include:
Factors such as the type of soil, and the nature of the construction site will all influence which dewatering method will be best suited to your project.
Why Expert Advice is Essential
No matter what the size of your venture, our highly experienced team can guide you through this process and advise you on the most cost effective and reliable solutions. We offer a complete design, installation and maintenance service package so there is a solution for all of your project needs.
Our installation and management teams have all been trained and qualified through rigorous in-house and external training programmes. With over 30 years’ industry leading experience as part of WJ Group, we are well equipped to deal with the difficulties and processes typically faced when installing and maintaining dewatering and groundwater control systems.
WJ Canada has always committed to investing in technology and people, and this has allowed us to lead the way in our industry sector.
Our Sectors
Whatever the type or scope of the clients requirement, we deliver the same great level of customer support, project management and expertise.
Featured Dewatering and Groundwater Control Projects
Cross Cut Completion at Oakwood Station
A challenging commission, which combined difficult dewatering conditions with innovative construction techniques.
Sump Pit Completion at Caledonia Station
In the world of dewatering, clay is clay. No matter how thin, a continuous layer can quickly change dewatering requirements.
Quick Turnaround Dewatering at Science Centre Station
When CTS construction teams unexpectely found groundwater at the bottom of the Eglinton Crossrail excavation, they called WJ for help dewatering the site.
