For environmental protection, a Geoshield High Density Polyethylene (HDPE) geomembrane liner system is used as a barrier to prevent contamination to valuable groundwater resources.

Design and installation are critical elements for the successful containment of wastewater. A minor breach of the liner system can have disastrous effects. Effluent leakage generates methane gas, the trapped gas collects beneath the liner forming large pockets or bubbles known as whales which leads to the ultimate failure of the liner system.

We recommend using a design engineer experienced in wastewater construction. The design should include geosynthetic materials that are compatible with effluent, a gas vent, and under drainage system. Geoflow geocomposite provides an effective gas vent and under drainage system.


  • Containment liners for anaerobic and aerobic lagoons
  • Floating covers– gas management and odour control
  • Digesters
  • Biofilters

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