National Toxics Inventory (NTI) |
Overview |
The U.S. Environmental Protection Agency's National Toxics Inventory (NTI) is a complete national inventory of stationary and mobile sources of hazardous air pollutants (HAPs). HAPs are defined as pollutants that are known or suspected to cause serious health problems.
Section 102 of the Clean Air Act (CAA) currently identifies a list of 188 pollutants as HAPs. The list of HAPs includes relatively common pollutants such as formaldehyde, chlorine, methanol, and asbestos, as well as numerous less common substances. Individual emission estimates are available for large stationary sources, while aggregate emission estimates at the county level are available for small stationary and mobile sources.
Available data series include pollutants emitted per state, county, or source.
Visit the National Toxics Inventory. |
Coverage |
NTI covers all 50 States, the District of Columbia, Puerto Rico, and the Virgin Islands. |
Availability |
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First Year | 1993 |
Last Year | 1999 |
Frequency | Every three years |
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Summary Tables |
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National Transportation Statistics |
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U.S. Carbon Dioxide Emissions from Energy Use by Sector, 1990-1998 |
Air Pollution Trends in Selected Metropolitan Statistical Areas |
Areas in Nonattainment of National Ambient Air Quality Standards for Criteria Pollutants |
Estimated National Emissions of Carbon Monoxide |
Estimated National Emissions of Lead |
Estimated National Emissions of Nitrogen Oxides |
Estimated National Emissions of Particulate Matter (PM-10) |
Estimated National Emissions of Particulate Matter (PM-2.5) |
Estimated National Emissions of Sulfur Dioxide |
Estimated National Emissions of Volatile Organic Compounds |
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Related Links |
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Aerometric Information Retrieval System Database |
Emissions by Economic Sector, Excerpt from the Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2000 |
Key Source Category Analysis for the Inventory of U.S. Greenhouse Emissions and Sinks: 1990-1999 Final Draft |
National Emission Trends database |
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