How should temporarily abandoned wells be sealed?

Temporarily abandoned wells should be sealed with a watertight seal to ensure that no contaminants can enter the well and that groundwater supplies remain protected. This method of sealing is vital for safeguarding public health and the environment, as improperly sealed wells can become pathways for pollutants to migrate into the groundwater aquifers. A watertight seal acts as a barrier against surface water, sediment, and other substances that could compromise the quality of the groundwater.

Using materials that create a secure and impermeable barrier is crucial. For example, a more robust sealing method might involve concrete or specially designed well caps that can withstand environmental conditions. This also helps prevent any accidents or injuries that might occur if someone unintentionally falls into the well.

Other options, such as using a simple wooden cap or a rubber band, do not provide adequate protection against environmental influences or potential contamination. Leaving a well unsealed could pose serious risks related to public safety and environmental integrity. Therefore, sealing temporarily abandoned wells with a watertight seal is the most responsible action to take.