- Alaska Division of Air and Water Quality
 - Mission is to improve and protect water quality by establishing water cleanliness standards, regulating discharges to waters and wetlands, providing financial assistance for water and wastewater facility construction, training and certifying water and wastewater system operators, and monitoring water quality. - Arizona Air Quality Division
- Bay Area Air Quality Management District
- Regional, government agency that regulates sources of air pollution within the nine San Francisco Bay Area counties.
- California Air Resources Board
- Working to promote and protect public health and ecological resources through the effective and efficient reduction of air pollutants while recognising the effects on the economy of the state.
- North Carolina Division of Air Quality@
- Northeast States for Coordinated Air Use Management (NESCAUM)
- Interstate association of air quality control divisions in the Northeast states comprised of the six New England States, New York, and New Jersey.
- Regional Air Quality Council - Denver, CO
- Includes info on air quality planning, trends, projections, Blueprint for Clean Air, Corporate Alliance for Better Air, and legislative updates.
- Santa Barbara Air Pollution Control District (APCD)
- Information on air pollution in Santa Barbara County, California including newsletter, innovative technologies, Green Award, business assistance, and more.
- South Coast Air Quality Management District
- Air pollution control agency for more than 14 million Southern Californians.
- U.S. Environmental Protection Agency: Clear Skies Act
- Mandatory programme that would dramatically reduce power plant emissions of sulphur dioxide (SO2).
- U.S. Environmental Protection Agency: Office of Air and Radiation@
 Warwick District Council Environmental Health (Pollution Division)
- Local levels of air pollutants and an array of information on air pollution.
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