Choose the Right Multilevel System

New 101M Mini Water Level Meter

Comparing Waterloo, CMT, Water Flute, and Multilevel Drive-Point Piezometer Multilevel Groundwater Monitoring Systems

The benefits of depth discrete monitoring have been known for years.

Which Solinst system will suit your application?

The Waterloo System (Since 1984)

Waterloo Systems have a modular design that gives excellent site and application flexibility, allowing placement of ports and packers to suit borehole logs. The engineered seals and dedicated sampling and level monitoring capabilities have been used to depths of 1000 ft (300 m). They are ideal for long-term monitoring in bedrock and cased boreholes.

The Water Flute (Since 1996)

The 405 Water Flute system uses a flexible liner to seal the interior of a borehole, except at defined sampling intervals. The Water Flute is fully dilated against the borehole wall, ensuring no water mixing. The liner can contain 15 or more monitoring ports, depending on the borehole diameter (4 to over 19″ (10 cm to 48cm)). Systems have been installed to depths of 1400 ft (425 m).

The CMT System (Since 1999)

CMT Multilevel Systems offer in-field design flexibility, low cost and is easy to install. The number of monitoring ports, port locations, install depths, and monitoring strategy, can all be accommodated and designed right in the field. The single tube offers effective sealing. The 7-Channel System is 1.7″ (43 mm) and the 3-Channel is 1.1″ (28 mm). They are ideal for shallow applications in narrow diameter boreholes.

The Multilevel Drive-Point Piezometer (Since 2021)

The 615ML Multilevel Drive-Point Piezometer has stainless steel monitoring ports connected using 3/4” NPT steel drive pipe and couplings. Dual barb stems allow the connection tubing to create up to 3 or 6 monitoring zones, depending on tubing size. They can be installed simply using direct push methods, including a slide hammer. Ideal for very shallow applications.

choose the right multilevel system
  1. Waterloo System
  2. CMT System
  1. Water Flute
  2. Multilevel Drive-Point Piezometer
Feature
Multilevel Drive-Point Piezometer
CMT System
Waterloo System
Water Flute
Ideal Depth
3 ft – 15 ft
(1 m – 4.5 m)
20 ft – 150 ft
(6 m – 50 m)
100 ft – 1000 ft
(30 m – 300 m)
50 ft – 1400 ft+
(30 m – 400 m+)
System Diameter
3/4” (19 mm) ID
7-Channel: 1.7” (43 mm) OD
3-Channel: 1.1” (28 mm) OD
2” (50 mm) OD
3” to 10” (8 cm to 25 cm) dia.
Max # of Sampling Zones
6
7 (7-channel) / 3 (3-channel)
7 (typical) / up to 24
6 (typical) / up to 18+ (custom)
Best For
Very shallow hand-driven investigations and rapid installation. Ideal for soil gas and surface/ groundwater interaction applications.
Low cost, shallow, flexible in-field design. Best for soil gas and groundwater applications in the same borehole. Most popular option.
Deep, long-term bedrock and cased-borehole monitoring with dedicated transducers and pumps.
Works with T-Profiling, NAPL/ FACT Liners for deep boreholes requiring multiple zones and continuous interval isolation that’s removable.
Installation
Direct push or manual slide hammer
In-field design & cutting
Modular/Manifold assembly
Eversion (water pressure)
Soil Gas Monitoring
YES
YES
YES
YES
Measuring Water Level
<20 ft (6 m) below ground
102 Water Level Meter
102 Water Level Meter
102 Water Level Meter
102 Water Level Meter
>20 ft (6 m) below ground
n/a
102 Water Level Meter
102 Water Level Meter or Pressure Transducer
102 Water Level Meter or Pressure Transducer
Groundwater Sampling
Dedicated
n/a
-1/4” Mini Inertial Pump
-408M 3/8” Micro DVP with 464 Pump Control Unit
-5/8” DVP or 1" Bladder Pump (multipurge) with 464 Pump Control Unit
Gas drive multipurge with 464 Pump Control Unit
Portable
-410 Peristaltic Pump
-410 Peristaltic Pump
-1/4” Mini Inertial Pump
-408M 3/8” Micro DVP, with 464 Pump Control Unit
-410 Peristaltic Pump
-1/4” Mini Inertial Pump
-408M 3/8” Micro DVP, with 464 Pump Control Unit
n/a
Installation Type
Removable / Permanent
Permanent
Removable/Permanent
Removable / Permanent