Well Abandonment

Yes. Idaho law requires that wells permanently taken out of service be properly abandoned according to IDWR standards — filled with approved sealing material and documented with a filed abandonment report. Failure to abandon a disused well can result in regulatory penalties and creates ongoing environmental liability.

An unsealed or improperly capped old well creates a direct pathway for surface contaminants — including fertilizers, pesticides, bacteria, and runoff — to reach the groundwater. Even wells that have been informally closed with a board, rock, or temporary plug may not provide adequate sealing. Formal abandonment fills the entire borehole with approved material to permanently close this contamination pathway.

Yes. In Idaho, the property owner of record is responsible for properly abandoning any unused wells on their property. Before purchasing land with old or undocumented wells, buyers should confirm well status and factor abandonment costs into their due diligence. Trident Drilling can identify and assess well condition during a pre-purchase inspection.