If there is information on toxicity or information on toxic limits that have been set for these impurities, this information should be provided.

In the 1990s federal and state regulators agreed to make state limits more uniform for the Great Lakes' most toxic pollutants; Congress is now considering a bill to promote further collaboration.

In Europe the Restriction of Hazardous Substances (RoHS) directive limits the use of many toxic materials in new electronic products sold in the European Union.