Which of the following is a method to address contaminants in groundwater?

Implementing protective measures in Wellhead Protection Areas (WHPAs) is crucial for safeguarding groundwater sources from pollution. WHPAs are designated zones surrounding a well or well field where land use activities are managed to prevent contamination of the groundwater that supplies drinking water.

By establishing protective measures within these areas, such as zoning regulations, land use restrictions, and promoting best management practices, communities can effectively reduce the risk of contaminants entering the groundwater supply. This proactive approach focuses on preventing pollution rather than merely responding to it after it occurs, helping to ensure a clean and safe water supply for the future.

In contrast, while monitoring chemical spills is important for emergency management, it does not prevent groundwater contamination directly. Adding chlorine to drinking water serves to treat water at the point of consumption rather than addressing the source of contamination. Filtering rainwater is also a method of treating water, but it does not directly relate to groundwater contamination as it is focused on surface water.