EPA's Report on the Environment (ROE)

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What Is the ROE?

EPA's Report on the Environment (ROE) shows how the condition of the U.S. environment and human health is changing over time. The ROE presents the best available indicators of national trends in five theme areas: Air, Water, Land, Human Exposure and Health, and Ecological Condition. The 80+ ROE indicators help answer 23 questions critical to EPA's mission of protecting the environment and human health. EPA updates the ROE indicators frequently to provide the latest available data. Use the multi-colored navigation bar at the top of every ROE Web page to explore the ROE themes, the associated questions, and the indicators that help answer these questions.

Featured Indicator: Drinking Water

This indicator summarizes the quality of drinking water from community water systems, which are public systems that supply water to the same population year-round. In 2016, roughly 95 percent of Americans got at least some of their drinking water from a community water system.

As part of its mission to protect human health, EPA limits the levels of certain contaminants that are allowed in drinking water, and requires certain treatment techniques. This indicator tracks the number of people served by water systems with no reported violations of these EPA standards. The exhibit here shows that of all the Americans served by community water systems, the percentage served by systems with no reported health-based violations increased overall from 79 percent in 1993 to 91 percent in 2016.

View the full indicator to learn more.