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The De Salaberry water retention project study (2019-2023) demonstrates that small naturalized dams can reduce phosphorus loads while mitigating floods and erosion, though performance varies based on retention time and incoming loads. The report argues that standard design practices often fail to maximize phosphorus reduction and recommends strategic targeting of phosphorus hot spots and increased retention times to better combat eutrophication and harmful algal blooms in Canadian freshwater systems.

The report examines how natural infrastructure, such as wetlands and small naturalized dams, can be optimized to improve water quality in the Canadian Prairies. Using data from the De Salaberry project (2019-2023), the authors demonstrate that hydraulic retention time is the primary driver of phosphorus reduction. They argue that standard design practices, which prioritize flood mitigation, often overlook quantifiable water quality benefits. The document recommends integrating dynamic treatment models into planning to target phosphorus hotspots and optimize outlet structures to increase the time water remains stored before release.

The statement contends that EPA Administrator Lee Zeldin has overseen a period of significant deregulation and funding cuts that undermine public health and environmental protection. It highlights the removal of human life valuation from air pollution analyses, the cancellation of $22 billion in environmental justice grants, and a 90 percent budget cut to the Clean Water State Revolving Fund despite PFAS reduction being listed as a priority. The author asserts that these actions, alongside the dismantling of the Office of Research and Development and a 52 percent overall budget cut, prioritize industry interests over scientific integrity and community health.

The SAVi assessment of the Bogotá River recovery project demonstrates that hybrid infrastructure—integrating nature-based interventions like wetland restoration with conventional systems—generated USD 349 million in net benefits. The project achieved a return of USD 1.27 for every USD 1 invested, primarily driven by USD 828 million in avoided flood damages and USD 554 million in value from improved water quality and ecosystem services.

The document assesses the socioenvironmental governance of nickel mining in Ontario, Canada, highlighting the lower carbon footprint of sulfide ores compared to laterites and the historical ecological recovery of the Sudbury region. It details the regulatory framework, including the impact of the Ontario Special Economic Zones Act 2025 on permitting timelines and Indigenous rights. Key environmental risks identified include acid mine drainage and the destruction of carbon-rich peatlands in the Ring of Fire, while social analysis focuses on the role of Impact Benefit Agreements and the underrepresentation of Indigenous women in impact assessments.

The Centre for Environmental Rights (CER) welcomes the introduction of a licensing regime and personal liability for directors in the Water Services Amendment Bill [B24 – 2025] but warns that the Bill concentrates too much power in the Director General and lacks mandatory environmental and public health standards for licensing. The CER argues that the Bill fails to address systemic under-funding of infrastructure and climate-change resilience, and it calls for the inclusion of mandatory climate-adaptation plans and a national framework for wastewater reuse.

The document argues that revising the Water Framework Directive (WFD) would create legal uncertainty and weaken environmental protections at a time when accelerating implementation is critical for climate adaptation and water resilience. The signatories contend that the WFD is essential for food security, public health, and the Human Right to Water and Sanitation, and that any changes intended to facilitate critical raw material extraction should not come at the expense of water quality and ecosystem health.

The Sustainable Asset Valuation (SAVi) assessment of the SUNCASA project in Kigali finds that nature-based solutions—including afforestation, reforestation, agroforestry, riparian restoration, and urban tree planting—are highly cost-effective for climate adaptation. Over a 25-year period, these interventions yield a benefit-cost ratio of 2.09, with a payback period of 7 years. The primary benefits derive from reduced flood damage to urban infrastructure, alongside significant public health savings and a projected 30% increase in carbon storage (approximately 600,000 tons of carbon dioxide). The project targets 2,500 hectares across six micro-catchments and includes the planting of 85,000 urban trees to mitigate risks from extreme rainfall, heat, and soil erosion.

The document highlights the decline of natural water storage in the Canadian Prairies due to drainage and land conversion, which increases vulnerability to climate-driven extremes. It advocates for a combination of wetland conservation and constructed water retention projects to improve water security, reduce flood peaks, and enhance water quality. The brief provides specific examples of successful projects in Alberta, Saskatchewan, and Manitoba, while outlining a strategic framework for future expansion, including prioritized conservation and increased funding.

The Amazon Basin hosts over 2,700 fish species, representing 15% of global freshwater fish biodiversity, with 65% being endemic. These fishes provide critical ecosystem services, such as seed dispersal for rainforest regeneration, and are essential for the food security and livelihoods of millions of people. However, they are threatened by habitat fragmentation from dams, deforestation, pollution (particularly mercury from gold mining), overfishing, and climate change. The report advocates for a shift from isolated national strategies to a unified, basin-wide governance framework that integrates scientific data with Indigenous and traditional knowledge to protect river connectivity and sustainable fisheries.

The document details Project Catalyst, a partnership launched in 2009 by WWF-Australia and The Coca-Cola Foundation to implement sustainable sugarcane farming practices in Queensland. The project focuses on reducing nitrogen run-off, which contributes to Crown of Thorns starfish outbreaks and coral deterioration. Since 2019, the initiative has prevented 36.2 metric tons of dissolved inorganic nitrogen from entering the Great Barrier Reef across the Wet Tropics, Burdekin, and Mackay Whitsunday regions.

The document criticizes the US government for granting 'licenses to pollute' to chemical and coal companies, which exposes children to hazardous substances like PFAS, lead, and pesticides. It argues that children are uniquely vulnerable to these toxins and demands the immediate phase-out of organophosphate pesticides, stricter air and water quality standards, and the prohibition of phthalates in consumer products.

The report evaluates 17 types of natural infrastructure across four functional families (cover, basins, watercourses, and groundwater) to support water management in the Canadian Prairies. It argues that while natural assets like grasslands and wetlands are essential, constructed analogues such as bioretention and green roofs are necessary in urban areas to bridge the infrastructure gap. The document provides performance rankings and technical data to help decision-makers build a more robust business case for nature-based solutions over traditional grey infrastructure.

WEAP is a comprehensive software tool for integrated water resources planning used by over 50,000 users in nearly 200 countries. It functions as a database, forecasting tool, and policy analysis system that balances water demand—including use patterns and allocation—with supply factors like streamflow and groundwater. The software features a GIS-based graphical interface and supports scenario-based analysis to evaluate the impacts of climate change, demographic shifts, and policy changes on water systems. It has been applied in diverse global contexts, including projects in China, Rwanda, Colombia, India, Nepal, and California, to support stakeholder dialogue and evaluate environmental flows.

The document describes a methodology for bridging the gap between high-level global water risk assessments and local ground truths. Using Unilever as a case study, it illustrates how global tools like Aqueduct provide a necessary starting point for screening hundreds of sites, but require validation through facility manager feedback and expert consultants to correct for limitations in global modeling, such as the inability to account for human-made water transfers or local water quality issues.

The document analyzes the legal requirements of Article 9 of the Nature Restoration Law (NRL), which mandates the restoration of at least 25,000km of free-flowing rivers in the EU by 2030. It details the process for creating barrier inventories, prioritizing the removal of obsolete structures, and ensuring these actions align with other EU frameworks like the Water Framework Directive (WFD) and the Habitats Directive. The briefing emphasizes the need for longitudinal, lateral, and vertical connectivity and warns against using the Renewable Energy Directive to justify the retention of obsolete barriers.

The document argues that natural infrastructure—comprising eight natural assets and nine constructed assets—is essential for bridging the water-related infrastructure gap in the Canadian Prairies. It details how these assets support flood mitigation, water supply, drought mitigation, and water quality, often complementing existing 'grey' infrastructure to enhance resilience against climate-driven extreme weather events.

The report advocates for the use of spatial targeting to maximize the water quality and climate adaptation benefits of water retention projects, such as wetlands and naturalized dams, in the Canadian Prairies. It highlights the PTMApp model and the necessity of high-resolution LiDAR-based digital elevation models (DEMs) to accurately map phosphorus loading and identify non-contributing areas. Using the Swan Lake study area as a demonstration, the document argues that strategic site selection improves cost-effectiveness and phosphorus interception, particularly during high-magnitude spring runoff events.

The document is a formal letter from a coalition of organizations to the U.S. House Subcommittee on Federal Lands opposing H.R. 1820 (the FLASH Act). The authors argue that the bill's mandates for road construction and border barriers would cause severe environmental harm, including habitat destruction and increased fire risk, while claiming that several sections are unnecessary because existing laws and agreements already grant the requested authorities to border security agencies.

The Institute for Policy Integrity recommends that the EEA-C ITWG align environmental-economic accounting classifications with practical stakeholder use cases and increase transparency regarding data, code, and methods to encourage business adoption. Specific technical suggestions include expanding Forest accounts to distinguish between native and non-native forests and monoculture versus diverse plantations, adding plastic pollution to Water accounts, and incorporating measures of uncertainty to avoid misleading estimates.