Working Report, 11/2006 – Radioactive isotopes in Danish drinking water

Radioactive isotopes in Danish drinking water

2 Scope of investigation

The scope of the investigation was to carry out a screening of radioactivity in drinking water for alpha and beta radioactivity from a representative number of the largest Danish water works all over the country. Special areas where higher levels of radioactivity could be expected were also included in the investigation

It was assumed that the Total Indicative Dose (TID) was below the parametric indicator value specified in the Directive if the screening levels for total alpha and beta radioactivity were not exceeded. If the screening levels were exceeded, further investigation of specific radioactive isotopes should follow. The TID is calculated from the radionuclide concentrations in the drinking water, dose coefficients from Directive 96/29/Euratom (EC, 1996) and an annual intake of 730 litres.