Want real data about your environment? Tools that tap into world-class EPA research help you learn more about your local land, air, and water.

EPA’s National Stormwater Calculator is a desktop application that estimates the annual amount of rainwater and frequency of runoff from a specific site anywhere in the United States.

Green Apps
More than 230 apps to help you understand and protect the environment.

My Environment Mapper
A search provides a cross-section of environmental information based on a user's location.

National Stormwater Calculator
The calculator estimates the annual amount of rainwater and frequency of runoff from a specific site anywhere in U.S.

EnviroFacts System
The database maps EPA-regulated facilities based on a user's location.

Interactive Tool to Comment on Proposed Federal Regulations Exit
Users can read and comment on proposed federal regulations to help enhance the quality of regulatory policies.

National Geospatial Program
Citizens can understand environmental conditions in specific locations by targeting areas of greatest environmental risk, enforcing environmental regulations and addressing potential homeland security issues.

Electronic Product Environmental Assessment Tool
Institutional purchasers can select and compare computer desktops, laptops and monitors based on the environmental attributes.