The Brazilian Judiciary determined to reduce the level of electromagnetic pollution generated by power lines to standard adopted by Swiss law (1.0 microtesla).

Two associations of residents in São Paulo – the largest city of Brazil – proposed the action. The plaintiff has pleaded to not be exposed to electromagnetic fields incompatible with the human health.
The electromagnetic fields generated by power lines that cross these areas is 10 times greater than the level determined by the court. The judgment of the Court of State of São Paulo (Tribunal de Justiça de São Paulo) has determined that the concessionaire of electric power reduces the electromagnetic field generated by power lines that pass through these neighborhoods.