State Implementation Plans
SIP Related Links
The primary and secondary NAAQS that EPA established to protect public health and welfare, also known as criteria pollutants, include the following pollutants:
SIP documents contain a wide variety of information including air quality goals, measurements of air quality, emission inventories, modeling demonstrations, control strategies, evidence of public participation, and more. While EPA is working toward making SIP documents fully accessible electronically, our initial effort is focused on ensuring EPA-approved SIP regulations are available for each state, commonwealth or territory. Fully electronically accessible SIPs will become a reality for future SIP actions as EPA fully automates the rulemaking process through EDocket in the coming months. In the meantime, EPA will continue to present currently approved state regulations and add information to the site periodically.
SIPS Where You Live
Select the state or region of concern.
- Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island,
Region 2 - New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
Region 3 - Delaware, Maryland, Pennsylvania, Virginia, West Virginia, and the District of Columbia
Region 4 - Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee
Region 5 - Illinois, Indiana, Michigan, Minnesota, Ohio, and Wisconsin
Region 6 - Arkansas, Louisiana, New Mexico, Oklahoma, and Texas
Region 7 - Iowa, Kansas, Missouri, and Nebraska
Region 8 - Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming
Region 9 - Arizona, California, Hawaii, Nevada, and Pacific Islands and Tribal Nations subject to US law
Region 10 - Alaska, Idaho, Oregon, and Washington