The levels of the Salzburg Convention (1000 µW/m2) of 1998, agreed on the basis of a study certifying the causal relationship between electromagnetic field levels and numerous adverse health effects, failed to set a real international precedent.
SWITZERLAND: ONIR 1999, Ordinance relating to protection from non-ionizing radiation.
Magnetostatic Field: 40 mT;
Low Frequency (50 Hz): 5 kV/m * 100 µT;
High Frequency (300 GHz): 1000 µW/m2 (61 V/m) * 0.2 µT.
Salzburg Resolution on Mobile Telecommunication Base Stations - Salzburg, June 7-8, 2000.
In the 2007 Bioinitiative Report, an exposure limit of up to 1000 µW/m2 outdoors was recommended, and 100 uW/m2 indoors.
In the updated 2012 Bioinitiative report, the Bioinitiative group proposes a reduction in the exposure limit to 3 µW/m2 indoors. However, in order to meet this requirement it would be necessary to dismantle most of the existing telephone facilities. Therefore, we do not consider it to be a reasonable limit.
The ICNIRP document itself, which calculates the current legal levels, reports in its point "Long-Term Effects":
"As noted above, epidemiological studies have consistently found that daily chronic low-intensity (above 0.3 to 0.4 µT) exposure to a power frequency magnetic field is associated with an increased risk of childhood leukemia. These fields have been classified by IARC as possibly carcinogenic (cancer-causing). However, a causal relationship between magnetic fields and childhood leukemia has not been established, nor have other long-term effects been established. The absence of this causality means that this effect cannot be addressed in the calculation of Basic Restrictions. However, risk management advice, including Considerations on precautionary measures, has been given by WHO (2007 a and b) and others."
(*) Article: ICNIRP standards to limit exposure to variable electric and magnetic fields (1 Hz - 100 kHz). Page 830. Published in: HEALTH PHYSICS 99(6):818-836; 2010