Well decommissioning

Abandoned or unused wells can be unsafe and may let pollution into the water underground. Decommissioning wells the right way keeps groundwater safe by preventing surface water infiltration into aquifers and removes safety hazards caused by abandoned wells. The Water Well Regulation – Clean Water Act requires well owners to fill and seal wells in accordance with the Department’s Well Decommissioning Guidelines (PDF 189 KB).

Decommissioning a water well in New Brunswick must follow specific provincial requirements to protect groundwater resources. This work can only be carried out by a licensed water well contractor holding a valid New Brunswick permit.

The process involves completely filling and sealing a drilled well to prevent contamination and ensure long-term environmental safety. Proper decommissioning helps safeguard drinking water sources and supports responsible water management across the province. 

Some water wells require special handling due to unique environmental or structural conditions. These include wells affected by saltwater intrusion, those that are contaminated and flowing artesian wells. Each of these situations demands careful assessment and appropriate management to protect groundwater quality and ensure safe drinking water for residents. 

In these cases, a Site Professional licensed by the Association of Professional Engineers and Geoscientists of New Brunswick (APEGNB)  must oversee the work and choose the safest method. Materials must create a strong seal, protect groundwater and remain stable even with contaminants or saltwater.