The US state of Washington has approved measures to regulate perfluorinated chemicals in firefighting foams. The prohibitions will be implemented in phases, starting July 1, 2018.
On March 27, 2018, the governor of the US state of Washington signed ESSB 6413 (Chapter 286, Laws of 2018?) into law to prohibit the use of perfluoroalkyl and polyfluoroalkyl substances chemicals in firefighting foams.
According to the definitions in the new law,