This article is part of a research project aimed at leveraging environmental health literacy (EHL) to enhance public health in developing countries. EHL is an emerging concept that integrates elements from information literacy, health literacy, and environmental literacy. It equips individuals with a wide range of skills and competencies to evaluate and understand the relationship between their environment and their health, enabling them to make informed decisions. Based on a proposed four-dimensional conceptual framework-comprising accessing, understanding, appraising, and applying information-a tool called EHL-Q25 was developed for assessing EHL. This article focuses on how the proposed framework and the validated EHL-Q25 tool can be utilized to inform the provision of services and practices in health sciences libraries.