Model 404 WaTerra Pump

Low cost - little more than a bailer

Reduces field time

Fast, easy operation

Avoids cross-well contamination

Avoids costly field blanks

Eliminates repeated pump decontamination

Excellent in silty/sandy environments

Ideal for well development

Operates to 250+ ft. (75+ m)

For wells with 0.5" - 6" ID (12mm - 150mm ID)  

To obtain excellent VOC samples, all that is required is to use about 8 ft. of 1/4" dia. (2.5m x 6mm) sampling tube. After purging, this is inserted into the riser tube leaving about 1 ft. (30cm) protruding. Develop a steady water flow and upon ceasing, the sample tube will continue to act as a gravity flow siphon and produce an undisturbed VOC sample.

Flow rate is a function of the momentum generated in the tubing. It varies with tubing length, submergence depth of the foot valve, flexing of the tube, and with the pumping rate.

Up to 2 gal/min with hand pump handle and flexible tube.

Up to 4 gal/min with a control unit and 1" tubing.

Higher volumes are obtained with two or more pumps strapped together for simultaneous pumping.