What is the recommended method for sealing a well?

The recommended method for sealing a well is using a concrete seal or bentonite clay. This approach is effective because both concrete and bentonite clay provide a robust barrier against contaminants while ensuring that groundwater is protected.

Concrete seals create a solid structure that can withstand environmental pressures and help maintain the integrity of the well. Bentonite clay is particularly advantageous because it expands when it comes into contact with water, effectively filling any gaps and preventing the ingress of contaminants. Both methods ensure that harmful substances from the surface cannot easily infiltrate the groundwater supply.

In contrast, fiberglass seals might not provide the same level of durability or long-term effectiveness as concrete or bentonite clay. Rubber gaskets may not offer the necessary sealing capacity or barrier protection against ground pollutants. Leaving a well open poses significant risks, including potential contamination and environmental hazards, which is why it is strongly advised against in any well sealing practices.