Sock dewatering (also known as horizontal wellpointing or one-pass trenching) is a specialized groundwater control method. Using a heavy-duty single-pass trencher, we install a 5-inch perforated corrugated drainpipe wrapped in geotextile filter fabric (“sock”) at depths typically ranging from 12 to 20 feet below grade. Groundwater enters the continuous drainage system and is conveyed through collector piping to surface suction lift pumps for safe removal.
Specialized One-Pass Trenchers
Telemetry-Monitored Fleet
In accordance with OSHA standards
What is sock dewatering?
Is sock dewatering the right choice for your site?
At Holland Pump, we deploy turnkey sock systems for a wide range of complex projects across the Gulf Coast and East Coast, including:
- Long linear utility projects
- Pipeline installations
- Roadway construction
- Transport infrastructure projects
- Residential and commercial development projects
- Large linear excavations
- Areas with shallow groundwater conditions
- And projects where traditional wellpoint systems may be less efficient
Watch our one-pass trenching crew in action
End-to-end execution with Holland Pump — from investigation to removal
As a recognized leader in sock dewatering across the US East Coast and Gulf Coast, Holland Pump maintains a fleet of specialized trenchers and experienced field installation crews. We deliver efficient, cost-effective groundwater control where traditional vertical wellpoints aren't as practical.
Our process:
- Site investigation and groundwater evaluation
- Engineering analysis and system design
- Installation of sock drains using specialized trenching equipment
- Collector piping installation
- Pump system integration
- Startup and performance monitoring
- Ongoing maintenance and technical support
- System removal or abandonment as required
Our complete single-source package includes:
Specialized Land-Drain Trenchers
Heavy-duty, specialized single-pass trenching machinery that simultaneously cuts the trench and installs continuous drainpipe down to 20 feet below grade.
Filter Sock & Collector Manifolds
High-grade 5-inch corrugated perforated drainpipe wrapped in specialized geotextile filter fabric (“sock”) paired with solid PVC/HDPE header lines.
High-Vacuum Pumps
Industry-leading vacuum-assist and self-priming centrifugal pumps engineered for continuous, pulse-free groundwater extraction.
Compliant Discharge & Water Treatment
Integrated settlement units and clarifiers to strip out suspended solids and sediment before off-site discharge, ensuring strict compliance with local, state, and federal environmental permits.
Get a sock dewatering quote
Fill in your details and our engineering team will get back to you with a custom proposal for your site.
For 24/7 support, please call our emergency line directly at (561) 697-3333.
FAQs about our sock dewatering solution
Sock dewatering is often the preferred solution for long, linear projects where continuous drainage can provide a more economical groundwater control method.
If you're unsure whether sock dewatering is right for your site, you can get in touch with the team, and we'll recommend the best solution for your challenge.
Sock systems perform best in permeable soils that allow groundwater to move freely toward the drainage system.
Sock drains are typically installed between 12 and 20 feet deep, with actual performance dependent on site conditions and project requirements.
Adequate access is needed to accommodate specialized trenching equipment and supporting installation machinery. If you get in touch with the team, we'll talk you through the requirements.
For many utility and infrastructure projects, sock dewatering can reduce installation time, material requirements, and operating costs compared to conventional wellpoint systems.
Our team has over 45 years of experience in dewatering and will walk you through the best option for your site.
All Holland Pump sock dewatering projects are executed in compliance with OSHA standards, environmental regulations, permit requirements, and Holland Pump safety procedures, including our internal Home Safe initiative.
At Holland Pump, our advanced telemetry systems provide real-time data, alarm notifications, and operational insights, while our field service teams remain available to respond rapidly to changing conditions.
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Sewer Bypass Solutions
Engineered sewer bypass & overpumping across the US East & Gulf Coasts. Turnkey flow control for force main repairs, lift stations, & sewer rehab.
Construction Dewatering Solutions & Groundwater Control
Turnkey wellpoint systems, sock dewatering, and excavation pumping for utility, civil, and industrial projects across the US East & Gulf Coast regions.
