This month, the emergence of the climate phenomenon El Niño in the Pacific poses an increased risk of droughts, floods and heat waves on a global scale (Bloomberg Markets, 11/06/2026). In the United States, the water crisis intensifies with the Colorado River reaching historically low levels, exacerbating legal tensions among seven states (NYT (Bluesky), 17/06/2026). Contamination by forever chemicals (PFAS) is becoming a major regulatory and legal issue: the European Chemicals Agency (ECHA) has classified TFA, an omnipresent PFAS, as "presumed toxic for reproduction" (Vert.eco, 10/06/2026), while in the United States, the Pentagon has delayed the cleanup of nearly 200 contaminated military sites (NOTUS, 12/06/2026). On the multilateral front, funding of 3.9 billion US dollars has been approved by the Global Environment Facility (GEF) for environmental projects covering the 2026-2030 period (Global Government Forum, 17/06/2026). Finally, a new analysis by the United Nations Children's Fund (UNICEF) reveals that nearly half of children worldwide, approximately 1.1 billion, are exposed to multiple climate threats simultaneously (Mail & Guardian, 17/06/2026).
PFAS: global contamination at the heart of accelerating regulatory and legal action
The issue of per- and polyfluoroalkylated substances (PFAS) dominated environmental news this month, illustrating a convergence of health concerns, regulatory actions and litigation on an international scale.
At the European regulatory level, a strong signal was sent by the European Chemicals Agency (ECHA). Its evaluation committee judged trifluoroacetic acid (TFA) — the smallest of PFAS, omnipresent in water and food — as "presumed toxic for human reproduction" (Vert.eco, 10/06/2026 ; Reporterre, 11/06/2026). This classification, should it be formally adopted by the European Commission, could lead to a significant tightening of regulations for pesticides and other industrial products that degrade into TFA. This scientific decision puts pressure on regulators, as studies already show massive contamination: 92% of drinking water in France would contain TFA (Vert.eco, 10/06/2026).
The local consequences of this diffuse contamination are being felt harshly. In France, many municipalities report being without resources, lacking both the financial means and technical solutions to treat contaminated water and comply with new European standards (Vert.eco, 11/06/2026). This inability is leading to a multiplication of consumption bans and legal actions: more than 400 residents and seven municipalities have filed suit with the Strasbourg administrative court to compel the French state to assess health risks and take action (Reporterre, 15/06/2026). Contamination of the food chain is also confirmed in Italy, where wine produced in a polluted area was found to be contaminated by high concentrations of PFAS, highlighting the persistence and migration of these pollutants in the agricultural ecosystem (Corriere della Sera, 13/06/2026).
The issue is equally pressing in the United States, where the management of PFAS pollution by state entities is being scrutinized. The Pentagon has quietly postponed cleanup operations at nearly 200 military sites. This delay would be a direct consequence of the recent classification of PFAS as hazardous substances by the Environmental Protection Agency (EPA), which now imposes stricter and more costly regulatory requirements on the military (NOTUS — News of the United States, 12/06/2026). This situation highlights the tensions between defense imperatives and environmental obligations, and could expose the US government to litigation from affected communities.
Water security: geopolitical tensions and urban crises amid climate disruption
Water resource security is being severely tested in several regions of the world, generating geopolitical tensions, local governance crises and drastic restriction measures.
In the United States, the mega-drought affecting the Colorado River basin has reached a critical threshold. The river is at unprecedented levels in decades, threatening water supplies to 40 million people. This situation exacerbates tensions between the seven states dependent on its waters, which threaten to resort to legal action over the sharing of remaining resources (NYT (Bluesky), 17/06/2026). Facing this vulnerability, costly diversification strategies are being promoted, such as the San Diego desalination plant, presented as a model of resilience despite the high cost of the water produced (The Washington Post, 12/06/2026). Elsewhere in the country, cities like Raleigh, North Carolina, are considering emergency measures, including a total ban on lawn watering, as the drought worsens (Raleigh News & Observer, 12/06/2026).
Geopolitical tensions over water are also acute. In South Asia, India's new Water Minister has taken a hardline approach regarding the Indus Waters Treaty, declaring that "not a single drop will flow to Pakistan" beyond treaty obligations, reviving a historical point of friction between the two nuclear powers (Livemint, 09/06/2026). In the Middle East, Iran's water crisis, already severe due to drought and unsustainable management, is worsened by the geopolitical context. Satellite imagery confirms the progressive disappearance of several large lakes (Al Jazeera English, 09/06/2026). In this context, an analysis by the New York Times suggests that US strikes targeted two drinking water facilities in southern Iran, raising questions of international law (NYT (Bluesky), 11/06/2026).
In Africa, the crisis is often linked to governance failures. In Johannesburg, South Africa, repeated water cuts highlight "empty promises and a lack of accountability," undermining the delivery of basic services and citizens' trust in local institutions (Daily Maverick, 17/06/2026).
Manifestations of climate change: El Niño, multiple shocks and Arctic ecosystems in transition
The confirmed return of the El Niño phenomenon in the tropical Pacific Ocean constitutes a major climate alert for the coming months (Bloomberg Markets, 11/06/2026 ; NYT (Bluesky), 11/06/2026). Declared by several meteorological agencies, including those of Japan and Australia, this event is expected to amplify extreme phenomena such as floods, droughts and heat waves, already exacerbated by climate change. The Australian agency (Bureau of Meteorology, BoM) has thus warned of an increased risk of severe summer heat waves and fires (The Age, 16/06/2026).
The human impact of these cumulative climate shocks is alarming. An analysis by UNICEF reveals that 1.1 billion children — nearly half of the world's children — are simultaneously exposed to multiple climate risks, making their access to water and a healthy environment increasingly precarious (Mail & Guardian, 17/06/2026).
In the Arctic, signals of systemic change are multiplying. A study indicates that the Arctic Ocean has reached a potentially catastrophic tipping point, with rapid acidification due to CO2 absorption and salinity changes that threaten the entire marine food chain (New Scientist, 16/06/2026). Paradoxically, accelerated glacier melting creates new opportunities for some organisms. By transporting rocks to the seafloor, icebergs create new benthic habitats, veritable "oases" of biodiversity for creatures such as corals and sponges, thus profoundly reshaping ecosystems (Nature (Bluesky), 11/06/2026 & 12/06/2026).
Governance, financing and regulation: contradictory signals
In the face of the scale of the challenges, responses in terms of governance and financing are mixed. On the multilateral front, a positive signal comes from the Global Environment Facility (GEF), where more than 180 countries have approved an envelope of 3.9 billion dollars for the 2026-2030 period. This financing will support biodiversity conservation, climate resilience and water management projects, with specific allocations for least developed countries (35%) and local and indigenous communities (20%) (Global Government Forum, 17/06/2026).
On the legal front, increasing inter-judicial dialogue between regional human rights courts (European, Inter-American and African) shows convergence towards recognition of a right to a healthy climate and strengthening state obligations (verfassungsblog.de, 17/06/2026). This judicialization of climate could become an increasingly powerful lever for action by NGOs and citizens.
However, blockages and regressions persist. In the United States, the Department of Justice (DoJ) sought to have air pollution lawsuits dismissed against a power plant operated by Elon Musk's xAI company, invoking national security reasons, a move that could create a concerning precedent for the enforcement of environmental law against industries deemed strategic (The Washington Post, 17/06/2026).
Finally, in Europe, while the regulatory framework is strengthening, objectives are not always being met. The EU's greenhouse gas emissions increased by 1% in 2025, marking a slowdown in decarbonization efforts (Politico EU, 17/06/2026). On circular economy, a report by the Jacques Delors Institute highlights an annual investment deficit of 82 billion euros to achieve EU objectives, with the current circularity rate capping at 12%, far below the 24% target for 2030 (Jacques Delors Institute, 11/06/2026).
Photo: Maximilian Brand / Unsplash