WJ has been providing multiple 6” and 8” diesel pumps on rental for an ongoing infrastructure project in Jeddah, Saudi Arabia. Our client, engaged in pipeline and manhole construction within open-cut excavations, requires dewatering solutions to control and lower groundwater levels during construction. Due to the high water flow from the Coraline Limestone found at the site, pumps have been installed at regular intervals to support the works. The client has employed a combination of trenching and sump pumping to direct water toward the pumps supplied by WJ.
Dewatering in Coraline Limestone Conditions
Coraline Limestone is commonly found along the west coast of Saudi Arabia, near the Red Sea. It is made up of lots of tiny shell and coral reef fragments. This type of rock contains fractures, fissures, and voids, which can allow significant water flow, making dewatering particularly challenging—especially in coastal locations. While constructing a cut-off wall or grouting the fissures can help reduce groundwater flow, these methods are often more costly than dewatering. Conducting thorough site investigations and pumping tests before commencing works helps to mitigate risks and improve efficiency.
At WJ, we encourage clients to involve us early in the project planning stage. Our in-house design and tendering team can assist in evaluating project requirements, analyzing site investigations, historical maps, and local geological conditions to develop a conceptual model. This helps to identify potential challenges and opportunities, allowing us to deliver an optimized, cost-effective dewatering solution while balancing risk and operational efficiency.
Reliable Pump Rental Solutions
WJ offers one of the largest selections of diesel-driven dewatering pumps available for rent in the region. In Saudi Arabia and the wider Middle East, the 6” diesel surface pump is widely recognized as the go-to solution for construction dewatering. These robust and efficient pumps provide flow rates of 150 to 300 m³/hr at discharge pressures of up to 2–3 bar, making them ideal for groundwater removal through sump pits, trenches, and land drains.
For effective pump operation, regular maintenance and monitoring are essential. At WJ, we ensure our pumps are routinely serviced, with oil and filters changed to withstand the harsh conditions of construction dewatering. The high wear and tear from continuous operation can be mitigated with preventative maintenance measures, including:
- Ongoing cleaning and inspections
- Fitting anodes to reduce corrosion
- Using pumps made from specialized materials such as stainless steel for handling corrosive or saline water
With many new projects in coastal areas across the Kingdom of Saudi Arabia, WJ offers specialist pumps designed for seawater pumping, ensuring efficiency and durability in challenging environments.
Contact Us for Your Next Pumping Project
Whether you need dewatering, sump pumping, or overpumping solutions, WJ has the expertise and specialist equipment to support your project. Contact us today to discuss your requirements and find the right pump rental solution for your needs.
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