As New Hampshire residents headed to the lakes and mountains over Memorial Day weekend, a quieter reckoning was underway about the long-term health of those same landscapes. A new commentary published Wednesday by the New Hampshire Bulletin puts into plain terms what a series of federal policy changes mean for the Granite State, and the picture it draws is one of mounting risk being transferred from the federal government to state agencies, municipalities, and individual households.
The piece, authored by Michael J. Cohen, a principal consultant at MJC Health Solutions and a board member of both the NH Association of Conservation Commissions and NH Audubon, walks through several major regulatory rollbacks and their specific implications for New Hampshire’s environment, public health, and economy.
The Endangerment Finding: A Legal Foundation Removed
The single most significant federal policy change Cohen highlights is the U.S. Environmental Protection Agency’s decision to rescind the so-called Endangerment Finding. This determination, which has been on the books since 2009, established the scientific and legal basis for the federal government to regulate greenhouse gas emissions under the Clean Air Act. In plain terms, it was the finding that greenhouse gases pose a threat to public health and welfare, and it underpinned a generation of federal environmental rules.
The EPA’s decision to rescind the Endangerment Finding did not get the headlines of a major legislative vote, but its downstream consequences are substantial. The finding served as the legal foundation for clean vehicle standards, power plant emission limits, methane controls, and federal climate resilience policies. With the finding gone, the federal government’s regulatory authority over climate-affecting emissions is significantly constrained. That authority does not disappear, but it becomes much harder to exercise and easier to challenge in court.
For New Hampshire, the practical consequence is that more of the regulatory and financial burden of managing climate-related risks falls to the state and local level. That includes everything from managing stormwater systems overwhelmed by heavier precipitation events to protecting drinking water supplies, repairing roads and bridges damaged by flooding, and funding the emergency response infrastructure that responds to heat waves and other extreme weather.
PFAS: A Local Fight Made Harder
The PFAS dimension of the policy rollbacks hits New Hampshire with particular force. The state has been dealing with PFAS contamination in its soil and water for years, driven in part by the legacy of firefighting foam use at military bases and industrial sites. Communities in the southern and seacoast regions have faced some of the most serious contamination challenges in the country, and the state has invested significantly in monitoring, remediation, and legal action to address the problem.
The EPA has now announced it will lift restrictions on four types of PFAS “forever chemicals” and extend by two years the compliance timelines that water utilities face for restrictions on two other legacy PFAS compounds, provided utilities can demonstrate the need for additional time. The decision reverses protective measures that New Hampshire health and environment advocates had viewed as baseline safeguards.
Earlier reporting has detailed how the EPA’s rollback of drinking water PFAS limits is alarming New Hampshire advocates, who warn that weakening the standards shifts the cost and responsibility of contamination management onto the communities least able to absorb it. Cohen’s analysis reinforces that concern, arguing that local governments are increasingly becoming the front line of a fight that federal agencies are stepping back from.
The implications are financial as well as public health-related. PFAS remediation is expensive. Legal challenges to contamination take years and require significant resources. When federal protections are weakened, municipalities must decide whether to fund more aggressive local monitoring and treatment, often at the expense of other budget priorities, or accept greater risk to residents.
Health Consequences: Asthma, Lyme, Algae, and Heat
Cohen’s analysis catalogs a range of health effects that health organizations including the American Lung Association, the American Public Health Association, and Physicians for Social Responsibility have linked to the weakening of federal environmental standards.
In New Hampshire, the concerns are both immediate and long-term. Deteriorating air quality standards could mean more asthma attacks and cardiovascular disease, particularly in communities near major highways or remaining industrial facilities. Rising temperatures are already expanding the range of tick species carrying Lyme disease and mosquito species that carry other illnesses, a trend that warmer winters and springs accelerate.
New Hampshire’s lakes, a defining feature of the state’s landscape and a cornerstone of its tourism economy, face increasing risk from harmful algal blooms. These blooms, fueled by warming water temperatures and nutrient runoff, can make lake water unsafe for swimming and recreation and cause significant economic damage to the lakefront communities that depend on summer tourism.
Heat emergencies are an underappreciated risk in a state not historically associated with extreme heat. But as temperatures rise, older adults, outdoor workers, and low-income residents without air conditioning face real dangers during prolonged heat events. Cohen notes that these populations are disproportionately affected and that the healthcare system costs of heat-related illness are measurable and growing.
Economic Headwinds Beyond the Environment
The economic dimensions of the federal rollbacks extend beyond direct environmental damage. Cohen points to the regulatory uncertainty created when federal standards are eroded as a deterrent to investment in the renewable energy and clean technology industries that could strengthen New Hampshire’s long-term energy economy.
The Endangerment Finding, while primarily a legal document, also provided the kind of stable regulatory environment that businesses planning long-term investments rely on. Electric vehicle manufacturers, renewable energy developers, and efficiency technology companies all make investment decisions partly based on the assumption that federal climate and energy policy will maintain a degree of continuity. When that certainty is removed, capital flows to places where the regulatory horizon is clearer.
New Hampshire’s tourism economy faces its own set of pressures. Warmer winters are already shortening the ski season, a significant concern for mountain communities whose economies depend on snow. The White Mountains and the communities surrounding them generate hundreds of millions of dollars in economic activity annually from skiing, snowshoeing, and winter recreation. Research from Dartmouth and other institutions has documented how warming and shifting precipitation patterns are affecting New Hampshire’s groundwater and natural water cycles, with long-term implications for both recreation and water supply.
Municipal budgets are also under pressure. Extreme weather events require emergency response, infrastructure repair, and public health interventions. When those events become more frequent or severe, local governments face a structural mismatch between their revenue capacity and their expenditure requirements. Property tax systems that are already strained in many New Hampshire communities are poorly suited to absorbing the costs of climate adaptation.
What New Hampshire Can Do
Cohen is careful to note that federal inaction does not mean New Hampshire is without options. He outlines several avenues through which residents and institutions can engage.
A network of environmental and public health organizations is actively working to fill gaps left by federal withdrawal, including the Conservation Law Foundation, the NH Public Health Association, the NH Forest Society, and NH Audubon. These organizations rely on volunteers, donors, and community partnerships to continue the work of monitoring, advocacy, and education.
State legislators can hear from constituents about the implications of federal policy changes and can work to ensure that state-level protections fill critical gaps. Towns and cities can use conservation commissions, public hearings, and civic organizations to identify specific local risks and develop practical responses.
On the economic side, Cohen argues that New Hampshire can actively support renewable energy development and clean technology investment, both as a hedge against fossil fuel price volatility and as a source of durable employment. The same regulatory stability that the Endangerment Finding provided at the federal level can, in part, be replicated through consistent and predictable state energy policy.
The analysis lands at a moment when the broader context of federal-state relationships in environmental policy is being redefined. New Hampshire has always prized local control and self-reliance, values that map naturally onto a posture of taking responsibility for the state’s own environmental conditions. But self-reliance at the state and local level requires resources, and those resources are finite. The honest challenge ahead is figuring out which federal safeguards New Hampshire can realistically replace on its own, and which gaps will simply go unfilled.
“Granite Staters have long understood that protecting our environment is not separate from protecting our economy or our health,” Cohen writes. As the federal rollbacks accumulate, that understanding will need to translate into action at every level of New Hampshire’s civic life.
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