David Hawgood / Drinking fountain, Kew Gardens / CC BY-SA 2.0 | Drinking fountain, Kew Gardens Supplied by the Metropolitan Drinking Fountain and Cattle Trough Association | https://commons.wikimedia.org/wiki/File:Drinking_fountain,_Kew_Gardens_-_geograph.org.uk_-_788808.jpg | Creative Commons Attribution-Share Alike 2.0 Generic license. | https://creativecommons.org/licenses/by-sa/2.0/deed.en
New health limits for two PFAS contaminants help California take a step in regulating these “forever chemicals” in drinking water. The proposed targets are 0.007 nanograms per liter of water for perfluorooctanoic acid (PFOA) and 1 nanogram for perfluorooctanesulfonate (PFOS). A nanogram per liter is equivalent to a part per trillion or one cup of a contaminant in a trillion cups of water. Establishing these health limits set in motion a process to create a new state regulation to replace the current California guidelines.