The news about PFAS keeps piling up, and the trend is pretty clear – none of it is good for manufacturers and significant users. There were two important items this week.
First, EPA published its human health toxicity assessment for “GenX chemicals,” also known as hexafluoropropylene oxide (“HFPO”) dimer acid (and don’t forget its ammonium salt!). EPA has pegged HFPO’s toxicity at 7-100 times higher than that of other PFAS compounds for which assessments already exist,… More
There has been much angst at the state level that EPA has not moved faster to develop drinking water or cleanup standards for PFAS. 
One of the states affected by the pace of EPA’s regulatory efforts is New Hampshire. Taking up the mantle, New Hampshire enacted legislation requiring the Department of Environmental Services to take a variety of actions with respect to PFAS. One required action is the development of a plan for the establishment of surface water quality standards for four PFAS compounds.… More
Last week, Judge Richard McNamara ruled that the plaintiffs were likely to succeed in their challenge to the very stringent standards for PFAS in drinking water promulgated by the New Hampshire Department of Environmental Services. However, given the importance of the issues, the Court stayed its injunction until December 31, to give the parties time to appeal to the NH Supreme Court.
The Court ruled against the plaintiffs’ claims that the regulations constituted an unfunded mandate and that DES failed to give fair notice and an opportunity to comment on the regulations (DES’s final regulations were substantially more stringent than its proposed regulations). … More
Late last month, New Hampshire filed two law suits seeking to recover a variety of costs and damages it alleges have resulted from contamination caused by releases of PFAS. It’s a wide ranging suit; New Hampshire asserted claims for negligence, defective design, failure to warn, trespass, and damage to public trust assets, among others.
And what relief does the state seek? Not much. It merely seeks that the court enter a judgment:
Finding Defendants liable,… More
On Friday, MassDEP proposed a number of revisions to the Massachusetts Contingency Plan, including reporting and cleanup standards for PFAS. 
The proposed GW-1 standard, applicable to current and potential drinking water source areas, would be 20 parts per trillion for the sum of six PFAS compounds (PFDA, PFHpA, PFHxS, PFOA, PFOS, and PFNA) – significantly more stringent than the 70 ppt guideline for the sum of five PFAS compounds currently in effect.… More
If you were thinking that PFAS were important, 
but you’ve been unsure just how big a deal they are, you need look no further than the Statewide PFAS Directive issued by the New Jersey Department of Environmental Protection. Some of my colleagues in New Jersey may correct me, but I think that the Directive may be the most wide-ranging order I’ve ever seen issued by an environmental agency. … More
Concern about the impacts of Poly- and Perflouroalkyl Substances is extensive and growing. 
Without seeking to downplay the potential risks from PFAS exposure, I do think that the way we are addressing PFAS demonstrates everything that’s wrong about how we talk about, assess, and respond to environmental risk in the United States.
Exhibit 1 for my view is Senator John Barrasso, the Republican chair of the Senate Committee on Environment and Public Works. … More