Acid Rain Program - a program designed to significantly reduce emissions responsible for acid deposition.

AirNow - provides real-time air pollution data, information about the public health and environmental effects of air pollution, and information about ways to protect public health and reduce air pollution. Also known as the Ozone Mapping Project.

Best Workplaces for Commuters (formerly Commuter Choice Leadership Initiative) - Best Workplaces for Commuters is a joint EPA and U.S. Department of Transportation recognition and partnership program that encourages employers to offer their employees an outstanding level of commuter benefits such as tax-free transit passes, vanpool benefits, or telecommuting.

Clean Energy - Clean energy is energy derived from highly efficient, clean technologies, including renewable, "green" power, and combined heat and power. The EPA’s Clean Energy Programs are designed to improve the national foundation of information on Clean Energy by creating networks between the public and private sector, providing technical assistance, and offering recognition of environmental leaders that adopt Clean Energy practices.

Climate Leaders Partnership - Climate Leaders is a voluntary industry- government partnership that encourages companies to develop long-term comprehensive climate change strategies and set greenhouse gas (GHG) emissions reduction goals.

Combined Heat and Power - also known as cogeneration, is an efficient and reliable approach to generating power and thermal energy from a single fuel source. CHP is more efficient, cleaner, and reliable than conventional central power plants. The EPA Combined Heat and Power Partnership is a voluntary program that seeks to reduce the environmental impact of power generation by fostering the use of cost-effective CHP.

Combustion - ensures the safety and reliability of hazardous waste combustion in incinerators and boilers and industrial furnaces.

Design for the Environment (DfE) - helps businesses incorporate environmental considerations into the design redesign of products, processes, and technical and management systems.

Energy Star Programs - works with the private sector developing cutting-edge, voluntary partnerships for the production and use of energy-efficient equipment.

Enviro$en$e - this site provides a single repository for pollution prevention, compliance assurance, and enforcement information and data bases.

Green Power Partnership - The Green Power Partnership is a voluntary Partnership between the U.S. Environmental Protection Agency (EPA) and organizations that are interested in buying green power. Through this program, the EPA supports organizations that are buying or planning to buy green power. As a Green Power Partner, an organization pledges to replace a portion of its electricity consumption with green power within a year of joining the Partnership. The EPA offers credible benchmarks for green power purchases, market information, and opportunities for recognition and promotion of leading purchasers.

Indoor Air Quality - provides information on all aspects of indoor air quality including radon, asthma, smoke-free homes, mold, and the Indoor Air Quality Tools for Schools Program.

Lead Programs - information on all aspects of the federal lead poisoning prevention program.

Mixed Waste Homepage - a program to coordinate management of mixed waste containing radioactive and hazardous waste.

Mobile Sources - carries out a broad range of activities to reduce pollutants emitted from motor vehicles, off-road equipment (e.g., lawnmowers, boats, locomotives, etc.), and their fuels.

New Chemicals - responsible for reviewing premanufacture notice (PMN) submissions and identifying new substances that require regulatory action.

Ozone Layer Protection Program - contains information about the science of ozone depletion, regulations in the US designed to protect the ozone layer, and more.

Pollution Prevention - works for "source reduction," and other practices that reduce or eliminate the creation of pollutants.

Radiation Programs - coordinates activities that protect the public health and environment from the effects of ionizing radiation.

SmartWay Transport Program - partnership with leading members of America's truck and rail transport sector which aims to reduce pollution and greenhouse gas emissions from ground freight carriers such as trucks and locomotives.

Sunwise Schools Program - This program provides materials to help teachers educate students in K-6 about protecting themselves from overexposure to the sun's ultraviolet radiation.

Toxics Release Inventory - the source of information about toxic chemicals that are being used, manufactured, transported, or released into the environment.

TSCA Biotechnology Program - reviews new chemicals before they are introduced into commerce.

Voluntary Diesel Retrofit Program - works to reduce pollution resulting from existing diesel vehicles and equipment by encouraging fleet owners to install pollution-reducing devices on the vehicles and to use cleaner-burning diesel fuel.

Waste Minimization - focuses on reducing the generation and subsequent release to the environment of the most persistent, bioaccumulative, and toxic chemicals in hazardous wastes.