Social & Preventive Medicine Proposed guideline values for radioactivity in drinking water is: A Gross alpha activity 0.5 Bq/L and gross beta activity 1.0 Bq/L B Gross alpha activity 1.0 Bq/L and gross beta activity 0.5 Bq/L C Gross alpha activity 5.0 Bq/L and gross beta activity 10.0 Bq/L D Gross alpha activity 10 Bq/L and gross beta activity 5.0 Bq/L 💡 Explanation Proposed guideline values for radioactivity in drinking water is: ✓ Correct Answer: A. Gross alpha activity 0.5 Bq/L and gross beta activity 1.0 Bq/L