What is the primary purpose of well casing and surface seal?

What is the primary purpose of well casing and surface seal?

• A. Prevent collapse, protect groundwater, and stop surface contaminants from entering the well; maintain sanitary barriers.
• B. Allow surface water to freely enter the well to improve recharge.
• C. Increase pump capacity regardless of contamination.
• D. Reduce noise around the well.

Answer: (A)