Are There Any Regulations For Abandoned Well Casing?

Well Plugging Requirements

In the United States, the Safe Drinking Water Act (SDWA) and the Environmental Protection Agency (EPA) regulate abandoned well casing. Under the SDWA, states are responsible for enforcing well plugging requirements, which typically involve plugging the well with a grout mixture and sealing the casing to prevent contamination of groundwater. For example, in California, well plugging requirements specify that the well must be plugged with at least 2 cubic yards of grout, with a minimum of 1,000 pounds of cement per 100 feet of well depth.

Plugging Techniques

There are several techniques for plugging abandoned wells, including mechanical plugging, chemical plugging, and hydraulic plugging. Mechanical plugging involves inserting a metal or concrete plug into the well to seal it, while chemical plugging uses a chemical grout to seal the well. Hydraulic plugging involves injecting a grout mixture into the well under pressure, then allowing it to set before sealing the well. A study by the American Ground Water Trust found that mechanical plugging was the most effective method for sealing abandoned wells, with a success rate of 95% or higher.

State-Specific Regulations

Regulations for abandoned well casing vary significantly from state to state. For example, in New York, abandoned well owners are required to plug their wells within 30 days of abandonment, while in Pennsylvania, the owner must plug the well within 60 days. In addition, some states require well owners to file a report with the state’s environmental agency before plugging the well. Homeowners and well owners should consult with their state’s environmental agency or a licensed well driller to determine the specific regulations for their area.