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A survey of state agency officials reveals that groundwater governance in the United States is fragmented, with significant variations in legal frameworks regarding the hydrologic connection between surface and groundwater, ecosystem needs, and quality protection. Despite these differences and varying enforcement capacities, states identified three shared priorities: water quality and contamination, user conflicts, and declining groundwater levels.

The study found that treeless riparian vegetation strips in the Argentinean Pampas are more effective at retaining glyphosate, reaching nearly 74%, compared to areas invaded by willow trees. While willow trees reduced runoff by 63% and altered soil moisture and biomass, they did not significantly change sediment retention compared to grassy controls. Glyphosate retention was positively correlated with sediment retention but negatively correlated with riparian slope and litter biomass.

The report examines the integration of nature-based solutions (NbS) in Swedish municipal stormwater management. It finds that while NbS principles are embedded in most municipal steering documents, the specific term 'nature-based solutions' is rarely used. There is a significant lack of standardized cost data, particularly for operations and maintenance (O&M). While co-benefits like flood risk control and water quality are widely recognized, others such as the heat island effect and carbon sequestration are underrepresented. The report highlights complexities in the division of responsibilities between municipal departments and private landowners and notes that current regulatory frameworks often fail to fully account for the multiple co-benefits of NbS.

The report details how climate change is accelerating in Nevada, leading to increased drought, extreme heat, and erratic precipitation. It outlines the resulting economic burdens, including the costs of wildfire suppression, water conservation efforts to protect Lake Mead, and the need for infrastructure upgrades to mitigate flooding and heat-related health risks.

The report compares 10 SADC cities, revealing stark disparities in economic wealth and infrastructure. While South African cities like Johannesburg and Cape Town are the wealthiest, they face high inequality and unemployment. Most other cities are characterized by high proportions of informal housing (60-86%) and a heavy reliance on national parastatals for engineered services. Sanitation remains the most critical service gap, with sewered sanitation being rare outside of South Africa and Zimbabwe. Local government finance varies wildly, with some cities relying heavily on national transfers while others, particularly in Zimbabwe, receive no transfers despite high service obligations.

The document details the benefits of IAI membership for Chile, highlighting specific research grants, collaborative projects on climate-health-environment nexuses, and scientific diplomacy initiatives. It lists funded projects ranging from US$ 90,000 to US$ 299,600, as well as the participation of Chilean institutions and individuals in IAI committees and the STeP Fellows program.

Industrial agriculture is a primary driver of wetland loss in the US Upper Midwest, where 30 million acres of wetlands provide critical flood mitigation and carbon sequestration. The report estimates that these wetlands provide nearly $23 billion in annual residential flood mitigation benefits, with long-term value between $323 billion and $754 billion. Recent legal shifts, specifically the 2023 Supreme Court ruling in Sackett v. EPA, have reduced federal protections under the Clean Water Act, leaving many wetlands vulnerable. The author argues that the next farm bill should expand the Conservation Reserve Program (CRP) cap, increase funding for the Conservation Stewardship Program (CSP) and Environmental Quality Incentives Program (EQIP), and link crop insurance to conservation practices to mitigate flood risk and support environmental justice for marginalized communities.

The report argues that South Africa has failed to translate its constitutional right to water into reality for millions of poor households. While physical access to piped water has increased since 1994, the state has substituted a comprehensive human-rights definition of access with a narrow focus on physical infrastructure. The report finds that the Free Basic Water (FBW) policy is inadequate because its 6kl monthly allocation is well below WHO minimums and is often restricted to a small number of registered indigent households. Furthermore, the report highlights a fundamental contradiction between municipal financial sustainability and affordable access, noting that high tariffs force poor households to sacrifice food expenditure to pay for water. It recommends revising the minimum water allowance to 75l per person per day, establishing a national indigent policy, and creating an independent water regulator to enforce concrete affordability standards.

The report analyzes the hydrological impacts of forest fires and deforestation in the Chiquitania region of Bolivia, specifically focusing on the Curichi Grande and Tucavaca watersheds. It details the development of a multi-criteria prioritization tool using Google Earth Engine (GEE) and a hydrological model using WEAP to assess water availability and soil retention. Field findings from 2021-2022 highlight critical water scarcity and quality issues in local communities following the 2019 and 2020 fires, while the report argues that integrating fire risk into water management is essential for sustainable regional development.

The project analyzes the connection between inland watersheds and coastal ecosystems in several Caribbean island nations. It utilizes hydrological modeling of 84 catchments to assess how land-cover, soil, and human activities—such as urban wastewater discharge in Puerto Rico and deforestation in the Dominican Republic—affect water quality and coastal resources.

A coalition of advocates argues that the EPA's disparate impact regulations under Title VI of the Civil Rights Act of 1964 are essential for protecting marginalized communities from disproportionate environmental harms. The document details systemic environmental racism, provides case studies of both successful and failed civil rights enforcement, and urges the EPA to strengthen rather than roll back these protections.

The Union of Concerned Scientists (UCS) evaluated 38 federal agencies on their adherence to scientific integrity metrics, finding that 71% scored 'poor' or 'worst'. The report argues that political interference in science disproportionately harms underserved communities and proposes a blueprint for the next presidential administration to strengthen scientific integrity through better policy enforcement, transparency, and the integration of environmental justice principles.

The Southeast Alaska Indigenous Transboundary Commission (SEITC) is seeking urgent intervention from the IACHR to prevent the approval of the Eskay Creek Revitalization Project, a gold and silver mine in British Columbia. SEITC argues that Canada and B.C. have failed to obtain the free, prior, and informed consent of the seven member Tribes whose traditional territories include the Unuk River watershed. The document highlights risks of toxic pollution from tailings dams and acid mine drainage, which could devastate salmon and eulachon (hooligan) populations essential for the Tribes' subsistence and culture. SEITC contends that B.C.'s current consultation process is deficient and discriminatory because it excludes Alaskan-based Tribes from the 'participating Indigenous nation' framework used for B.C.-based First Nations.

The document examines the risk of 'sleeper species'—non-native species that remain inconspicuous until environmental shifts, often driven by climate change, trigger rapid population growth. Focusing on the Laurentian Great Lakes, it details how vectors like ballast water and recreational boating introduce these species and highlights the economic and ecological damage caused by examples like zebra mussels and spiny water fleas. The brief advocates for a shift toward prevention and early detection through international collaboration, unified regulatory frameworks for shipping, and citizen science engagement to mitigate the rising costs of biological invasions.

Dr. W. Payton Gardner's review concludes that the PHC and GMR for the Bull Mountain Mine contain significant omissions and non-conservative assumptions. The review highlights a failure to quantitatively analyze impacts on over 50 local springs and shallow groundwater wells, a groundwater model that ignores fracture flow processes and incorrectly assumes 'healing' in mudstone layers, and a mitigation strategy relying on the UB2A sandstone aquifer that is likely insufficient in both volume and water quality.

The Southeast Alaska Indigenous Transboundary Commission (SEITC) is seeking relief from the Inter-American Commission on Human Rights due to the impacts of hard-rock mining in British Columbia, Canada. The document argues that mining projects in the Taku, Stikine, and Unuk watersheds threaten the subsistence and cultural rights of Southeast Alaska Native communities through heavy metal pollution and habitat destruction. SEITC alleges that Canada and B.C. have failed to conduct comprehensive transboundary environmental assessments, have ignored the need for free, prior, and informed consent (FPIC), and have used a flawed amendment process to expand mine operations without adequate scrutiny. The submission introduces a new claim regarding the violation of the right to a healthy environment and requests that the Commission investigate these claims and recommend the suspension of mine authorizations until transboundary harms are addressed.

The document outlines the importance of monitoring water retention projects in the Prairies to ensure they meet specifications and to track long-term performance. It emphasizes that monitoring water quantity and quality helps optimize sites for climate adaptation and multiple benefits, including flood mitigation, drought resilience, water quality, biodiversity, and carbon storage. The guide aims to demystify the technical requirements of monitoring by reviewing equipment and analysis methods based on IISD's experience.

The document outlines a framework for monitoring water retention projects in the Prairies, emphasizing the need for water and contaminant mass balances to evaluate performance. It details a range of monitoring tools—from low-cost metre sticks to expensive automated samplers—and explains how to use rating curves to estimate discharge. The guide highlights the importance of high-frequency data to capture rapid hydrologic events and suggests using monitoring data to develop hydraulic and water-quality treatment models for improving future site design and management.

The report details the 'destructive power' of the nickel industry in North Maluku, specifically across Weda Bay, Gebe Island, Buli Bay, Subaim-Wasile, and Obi Island. It highlights a paradox where the province's economic growth exceeds 20% due to nickel exports, while poverty increases and local livelihoods—such as fishing and farming—are destroyed. Key impacts include severe deforestation, water contamination with heavy metals (hexavalent chromium, nickel, and copper), and a surge in Acute Respiratory Infection (ARI) cases near coal-fired power plants. The document also records numerous industrial accidents at PT IWIP and the criminalization of residents resisting mining. It concludes that the 'clean energy transition' via electric vehicle batteries is built on an 'unclean and unjust' production chain.

The Mekong River basin is the world's most productive inland fishery and the third most species-rich river for fish, hosting 1,148 recognized species. However, nearly 20% of these species are threatened with extinction due to hydropower dams, habitat loss, sand mining, pollution, and climate change. The report highlights the critical role of fish in regional food security—providing over half of the animal protein for many Lower Mekong populations—and their economic value in aquaculture, the aquarium trade, and potential eco-tourism. To reverse these declines, the document proposes a six-pillar Emergency Recovery Plan focusing on natural river flow, water quality, habitat restoration, sustainable resource management, control of invasive species, and the removal of obsolete barriers.