Monday, September 19, 2005

How much radon is too much?

There is no global consensus on what constitutes an elevated or dangerous concentration of radon.

The Environmental Protection Agency (EPA) considers 148 Bq/m3 as the maximum safe concentration level of radon.

The European Union places the limit higher, at 200 Bq/m3.

In Canada, health officials state that 800 Bq/m3 is the highest acceptable concentration but a lower limit is currently being researched.

Erring on the side of the lowest, American, number would definitely be safest. Radon doesn't care where you're from. It's not an equal-opportunity health hazard.


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