Proposed guideline values for Radioactivity in Drinking water is
Gross a activity 1.0 Bq/L and Gross b activity 10.0 Bq/L Gross a activity 1.0 Bq/L and Gross b activity 0.1 Bq/L Gross a activity 0.1 Bq/L and Gross b activity 1.0 Bq/L Gross a activity 10 Bq/L and Gross b activity 1.0 Bq/L