solinst 401 waterloo multilevel monitoring system installed on an angle

Model 401 Waterloo Multilevel Systems

Proven Results for Decades

  • Isolate and monitor depth discrete zones
  • Dedicate pumps and transducers
  • Engineered packers

solinst 401 waterloo multilevel system logo

The Waterloo Multilevel System allows groundwater measurements and samples from many isolated zones in a single borehole. Flexible design allows users to customize a system for each monitoring project.

taking datalogger readings from solinst model 401 Waterloo multilevel system

Waterloo Multilevel Groundwater Monitoring System

The Waterloo Multilevel Groundwater Monitoring System is used to obtain groundwater samples, hydraulic head and permeability measurements from many discretely isolated zones in a single borehole.

Waterloo Systems have a modular design that gives excellent site and application flexibility, allowing placement of ports and packers exactly where needed. The engineered seals and dedicated sampling and level monitoring capabilities have been used to 1000 ft (300 m). The systems can be installed in 3-4″ boreholes, or larger. Options are available to suit bedrock, overburden, or a combination application.

Waterloo Systems reduce project costs and time in the field, with fewer drilled holes, reduced site disturbance, smaller purge volumes and faster sampling. A number of systems used at one site provide detailed 3-D groundwater information, which enables superior decision-making and more accurate site and risk assessments. It allows the tracking and detection of migrating contaminants, monitoring of natural attenuation, and determines remediation performance.

cmt multilevel monitoring illustration showing vertical sand and bentonite layers with isolated sampling zonesCMT Multilevel Monitoring

  • Low cost and easy to install in one day
  • Single tube for effective sealing
  • Ideal for shallow applications
  • In-field design flexibility
  • 7-Channel or narrow 3-Channel options

solinst 401 dual stem port for waterloo multilevel system for dedicated discrete zone monitoring with a vibrating wire pressure transducer and sampling pump installed at the portDedicated Monitoring

Waterloo Multilevel Systems have the option of using both dedicated pumps and pressure transducers at each monitoring port. This maximizes the speed at which data is obtained, avoids cross-contamination and ensures repeatable measurements. Purge volumes are reduced, which saves even more time and effort, and provides cost savings.

Case Studies and Articles

chlorobenzene plume based on initial investigations and modeling

Waterloo Multilevel Systems Help Characterize Plume in Landfill Expansion Project

The GeoEnvironmental (GZA), a multi-disciplinary environmental consulting firm, designed and operates a pump and treat system at a large solid waste landfill in Rhode Island. GZA has been overseeing the system for the past ten years, and have successfully extracted and treated more than 10 million gallons of highly contaminated groundwater. 

high resolution site characterization using multilevel systems with transects

High-Resolution Site Characterization with Multilevel Systems

Within the last few years, the U.S. EPA added a new focus area on high-resolution site characterization (HRSC) to their Contaminated Site Clean-Up Information (CLU-IN) website. The U.S. EPA’s definition of HRSC is: “High-resolution site characterization (HRSC) strategies and techniques use scale-appropriate measurement and sample density to define contaminant distributions, and the physical context in…

Webinar Replay: HydroTerra and Haley and Aldrich

The Transect Approach to Characterizing and Monitoring Dissolved Contaminant Plumes

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