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 cumulative impact statement process for permits related to environmentally harmful actions. This legislation requires a detailed cumulative impact statement (CIS) to be prepared at least 60 days prior to any proposed action, which must include an assessment of the neighborhood context, facility operations, and anticipated community impacts. The bill also introduces a modified cumulative impact statement requirement for District agency plans that could affect significant sources of environmental harm, emphasizing transparency and community engagement. If proposed actions disproportionately affect overburdened communities, they may be denied, while actions that significantly reduce adverse impacts or provide direct benefits to these communities are exempt from the cumulative impact process.

Key amendments to existing laws include changes in terminology, such as altering "grant or issuance" to "grant, issuance, or renewal," and "certificate" to "certificate, registration." The bill establishes an Energy and Environmental Justice Division within the Department of Energy and Environment (DOEE) to focus on reducing environmental burdens in these communities and allows the Mayor to impose fines or revoke actions for non-compliance with environmental impact statements. The act will take effect once its fiscal impact is included in an approved budget and financial plan, thereby enhancing environmental justice and prioritizing the needs of vulnerable communities in the District's planning and permitting processes.