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(905) 238-5242


Waterra Groundwater Sampling Pump System

Waterra Groundwater Sampling Pump for Monitoring Wells and Piezometers

The Waterra Groundwater Sampling Pump System (Inertial Pump) was developed in Canada in the 1980’s to meet demand for a reliable and inexpensive pump for purging and sampling groundwater monitoring wells.

The system is designed for everything from drive point size, 1/2 inch (1.2 cm) up to 2 inch (5 cm) and 4 inch (10 cm) wells or piezometers. It will also perform well in harsh environments that would ruin other more expensive pumps. Today, it has become one of the most prolific devices for purging, developing, sampling and VOC sampling monitoring wells.

Waterra Pumps are often dedicated to wells due to their low cost and to avoid cross-contamination or de-conning issues.

Waterra Pumps consist of three elements:

Waterra Foot Valve Waterra Tubing Waterra Tubing Actuator

Waterra Pump Foot Valves - Vertical
Waterra HDPE Groundwater sampling tubing
Waterra LDPE Groundwater Sampling Tubing

And There Are Some Pump Accessories

Waterra Pump System - Lever Arm Tubing Actuator
Waterra Hydrolift Pump - Tubing Actuator
PowerPack for Waterra Pumps

Here's How a Waterra Pump Works

The Waterra Groundwater Sampling Pump System is a simple, inexpensive way to sample a monitoring well.

  1. A Waterra Foot Valve is attached the bottom end of a length of Waterra Tubing.
  2. The Foot Valve – Tubing combo is inserted into the well, Foot Valve first, until the valve is submerged beneath the water table to the desired pumping depth.
  3. The tubing is then oscillated (pulled up and then pushed down) over a short vertical range of motion either by hand or with a Waterra Tubing Actuator.
  4. Water builds up in the oscillating tubing until it discharges at surface.

How the Waterra Pump works

Hydrolift Tubing Actuator

Let’s get started...

Waterra Words of Wisdom

  • Most popular? Standard Flow: D-25 Foot Valve, Tubing and Hydrolift Tubing Actuator
  • Powered Tubing Actuators allow field personnel to perform other duties
  • Waterra Pumps can be used for well development and purging too
  • This system can be used for VOC sampling as well
  • Waterra has several accessories listed below for specific applications

The 4 systems of the Waterra Groundwater Sampling Pump

The performance of each system of the Waterra Pump is largely controlled by its tubing diameter — the larger the tubing the greater the flow rate and depth capability. Within each system are an assortment of different foot valves and tubing for different sampling requirements. We can help you optimize the system.

Micro Flow:drive points

Max Flow:  ½ gpm = 1.9 lpm

Max Lift:  75 feet = 23 m

Low Flow:  – piezometer sampling

Max Flow:  ½ gpm = 1.9 lpm

Max Lift:  100 feet = 30 m

Standard Flow: – our most popular

Max Flow:  1 gpm = 3.8 lpm

Max Lift:  200 feet = 60 m

High Flow:  deep well sampling

Max Flow: 4 gpm = 15 lpm

Max Lift:  300 feet = 90 m

Micro Flow System: < ½ gpm & max 75 feet – drive points - (< 2 lpm & 23 m)

Waterra SS-10 Foot Valve

The Micro Flow System is popular for use in direct push technology micro well installations and multi-level installations.

The SS-10 Stainless Steel Foot Valve can deliver a sample from as deep as 75 feet (23 m) and flow rates with this system are usually less than 1/2 gallon per minute (1.9 lpm).

Micro Flow Foot ValveMicro Flow TubingTubing Actuators
SS-10HDPE (High Density Polyethylene)
— 0.375" OD X 0.25" ID
LDPE (Low Density Polyethylene)
— 0.375” OD x 0.25” ID
FEP (Teflon)
— 0.375" OD X 0.25" ID
By hand is most common

Low Flow System: < ½ gpm & max 100 feet - piezometer sampling - (1.9 lpm & 30 m)

The Low Flow System is designed for small diameter piezometers  0.75 – 1.5 inch (1.9 – 3.8 cm) ID . It can provide flow rates of up to 1/2 gallon per minute (1.9 lpm) and can lift water from up to 100 feet (30 m).

Low Flow System D-13 (Delrin) and SS-13 (Stainless Steel) Foot Valves have a male thread which allows them to have a maximum outside diameter of  1/2” (13mm). This narrow diameter means that they will often fit into piezometers that can not be accessed by the Standard Flow System.

Low Flow Foot ValvesLow Flow TubingTubing Actuators
D-13 & SS-13HDPE (High Density Polyethylene)
— 0.5" OD X 0.375" ID
LDPE (Low Density Polyethylene)
— 0.5" OD X 0.375" ID
FEP (Teflon)
— 0.5" OD X 0.375" ID
By hand is most common

Lever Arm

Hydrolift 2

Standard Flow System: 1 gpm & max 200 feet - our most popular system - (3.8 lpm & 60 m)

The Standard Flow System is the most popular Waterra Pump. This system is best suited for 1 – 2 inch (1.2 – 2.5 cm) ID monitoring wells and can provide lifts to 200 feet (60 m). Flow rates can be as much as 1 gallon per minute (3.8 lpm).

Foot Valves are available in Delrin and Stainless Steel with options for threading inside the tubing ( D-16 & SS-16) for narrow applications or on to the outside of the tubing (D-25 & SS-19).

Standard Flow Foot ValvesStandard Flow TubingTubing Actuators
D-25, D-16, SS-19 & SS-16HDPE (High Density Polyethylene)
— 5/8" OD x 1/2" ID
LDPE (Low Density Polyethylene)
— 5/8" OD x 1/2" ID
FEP (Teflon)
— 5/8" OD x 1/2" ID
By hand with effort

Lever Arm

Hydrolift 2

Power Pack

High Flow System: up to 4 gpm & max 300 feet - deep well sampling - (15 lpm & 90 m)

The High Flow System is designed to be used in 2 inch (5 cm) wells or larger where a high pumping rate is desired or where very deep wells are encountered. This system is also an excellent well development tool in 2 inch (5 cm) piezometers.

High Flow system lift of over 200 feet (60 m) in 2 inch (5 cm) monitoring wells and flow rates of up to 4 gallons per minute (15 lpm) may be achieved.

Foot Valves are available in Delrin and Stainless Steel.

High Flow Foot ValvesHigh Flow TubingTubing Actuators
D-32 & SS-32HDPE (High Density Polyethylene)
— 1" OD X 0.814" ID (100', 200' lengths)
— 1" OD x 0.75" ID (300' length)
Lever Arm

Hydrolift 2

Power Pack

Waterra Tubing Actuators

The Waterra Pump System works by oscillating (pulling up then pushing down) the Tubing – Foot Valve combo over a short vertical range in the well as you can see in the animation below. A tubing actuator makes this happen!

Waterra Foot Valve Animation

1) By Hand – Unfortunately We Can't Provide These

The Waterra Pump Systems can actually be made to pump by hand IF the well is not too deep OR there is not too much water to pump. Simply grab the tubing with one or both hands and pull the tubing up with a bit of a snapping motion and lower it back down.

A one foot stroke should suffice but it is hard work and that is why we offer mechanical Waterra Tubing Actuators below.

Lever Arm for Waterra Pump System

2) Waterra Lever Arm - Manual Tubing Actuator

The Waterra Lever Arm -Tubing Actuator is a convenient, portable manual levered arm designed to provide mechanical advantage when using a Waterra Pump. It also facilitates the collection of samples.

This Tubing Actuator is the best choice for the occasional light duty say less than 100 feet (30m) with the standard flow system. It can be used with Low Flow, Standard Flow and for shallow High Flow Waterra Pump Systems.

Waterra Pump Hydrolift - Side View

3) Hydrolift – Electrical Tubing Actuator

The Hydrolift Tubing Actuator is portable electrical equipment that will vertically oscillate the Waterra Foot Valve-Tubing Combo in your monitoring well. It will give a big efficiency boost to your field sampling program.

This Tubing Actuator is designed for purging, developing and sampling 2 inch (5cm) diameter monitoring wells up to 200 feet (60m) deep. The Hydrolift is optimized to operate with the Standard Flow System up to its maximum effective depth and will operate with the High Flow System up to a depth of 150 feet (45m).

Waterra Pump System - Power Pack Tubing Actuator

4) Power Pack – Gasoline Powered Tubing Actuator

The Waterra PowerPack Tubing Actuator provides gasoline driven  vertical oscillation for Waterra Pumps to depths of 200 feet (60m).

The PowerPack is powerful enough to lift water from over 200 feet (60m) depth using the Standard Flow System, and it fits onto a back-pack frame. This Tubing Actuator incorporates clamps for Waterra Standard and High Flow tubing sizes (adaptors are available for smaller tubes).

Waterra Pump Accessories

Waterra Surge Blocks for 2 inch well development

Waterra Surge Blocks for 2 inch well development

Monument Casing Adapters

Waterra HDPE VOC Tubing

Waterra HDPE-VOC-Tubing

Waterra LDPE VOC Tubing

Waterra LDPE-VOC Tubing

Waterra Tubing Cutter

Waterra Tubing Cutter

Waterra Valve Wrench for Foot Valves

Waterra Valve Wrench for Foot Valves

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