The Cumulative Impacts Analysis Amendment Act of 2025 seeks to combat environmental injustices in low-income and predominantly Black neighborhoods in the District of Columbia by instituting a comprehensive cumulative impact statement process for permits related to environmentally harmful actions. This legislation requires a modified cumulative impact statement for District agency plans that may affect significant sources of environmental harm. It enhances accountability by empowering the Mayor to impose fines or revoke actions for non-compliance with environmental impact statements and establishes an Energy and Environmental Justice Division within the Department of Energy and Environment (DOEE) to focus on alleviating environmental burdens in these communities.

Key provisions of the bill include mandates for transparency and community engagement, allowing for the denial of proposed actions that disproportionately affect overburdened communities. The legislation updates definitions and requirements within the District of Columbia Environmental Policy Act of 1989, introducing terms such as "adverse cumulative stressors" and "overburdened community," while repealing outdated sections. It also amends existing laws regarding the preparation and submission of Cumulative Impacts Statements (CIS), changing terminology and requiring detailed CIS to be prepared at least 60 days prior to proposed actions. Furthermore, the bill stipulates that no funds can be spent on actions with identified disproportionate impacts without Council approval, and it mandates that if a CIS identifies a disproportionate impact, the action must be disapproved unless mitigating measures are proposed.