[ RadSafe ] European Union (EU) Drinking Water Limit for Tritium

Leo M. Lowe llowe at senes.ca
Tue May 22 14:58:41 CDT 2007

Some questions for our European colleagues:

I understand that the EU drinking water limits are based on an 
"indicator dose" of 0.1 mSv/y, excluding tritium, K-40 and radon, and 
an indicator parameter of 100 Bq/L for tritium.

What is the basis for the 100 Bq/L value for tritium?  How was it 
derived? Is it just an indicator that non-background sources are 
potentially present?  Is there a readily-available citation that 
describes this?

Also, if 0.1 mSv/y is just an "indicator dose", what is the EU dose 
limit for drinking water?

Feel free to respond directly to me.


Leo M. Lowe, Ph.D., P.Phys.

SENES Consultants Limited
llowe at senes.ca
Tel:  905-764-9380
Fax: 905-764-9386

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