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0000017a-15d9-d736-a57f-17ff8f4d0000NHPR’s ongoing coverage of water contamination at the former Pease Air Force Base and in the communities surrounding the Saint-Gobain Performance Plastics plant in Merrimack. We’ll keep you updated on day to day developments, and ask bigger questions, such as:What do scientists know about the health effects of perfluorochemicals like PFOA, PFOS and PFHxS?How are policy makers in New Hampshire responding to these water contaminants?How are scientists and policymakers communicating potential risks?How are other states responding to similar contaminations?

Judge Says N.H. Must Halt PFAS Limits Dec. 31, Pending Supreme Court Appeal

Andreas Levers via Flickr CC

A judge has ruled that New Hampshire will have to stop enforcing its strict new limits on PFAS chemicals at the end of the year – but the case is far from settled.

Merrimack Superior Court judge Richard McNamara’s ruling, which was provided to NHPR, grants an injunction requested by the major chemical company and PFAS-maker 3M, as well as local stakeholders.

But it won’t take effect until Dec. 31, the judge writes, “so that either party may seek immediate review of this decision in the New Hampshire Supreme Court.”

(Read the full ruling below.)

“[T]he legal issues raised by Plaintiffs’ challenge are complex, the importance of public health is paramount and the expense imposed by the proposed rule is significant,” McNamara writes in staying the injunction.  

The rules in question require public water systems to test and treat for low levels of PFAS chemicals, which have been linked to health problems.

3M and its partners argue the state didn’t use proper science or public input in making the rules. The state counters that halting the rules will perpetuate unsafe PFAS levels in drinking water.

The ruling means public water systems will still have to submit their first round of quarterly PFAS test results to state regulators by the end of the year. Any enforcement after that – including the need for treatment systems that could cost millions of dollars – will hinge on how the court case proceeds.

A spokesman for the state Department of Environmental Services declined to comment except to say that DES is reviewing McNamara’s ruling with the state Department of Justice.

A 3M spokesperson says in a statement that they agree with the ruling: “[I]n this instance, the New Hampshire DES failed to meet its obligation to consider the costs to be imposed on entities in New Hampshire without assessing the benefit from doing so." 

This story was updated Wednesday to include a statement from 3M.

Annie has covered the environment, energy, climate change and the Seacoast region for NHPR since 2017. She leads the newsroom's climate reporting project, By Degrees.
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