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District Of Columbia Nonattainment/Maintenance Status for Each County by Year for All Criteria Pollutants

As of October 01, 2015 The 8-hour Ozone (1997) standard was revoked on April 6, 2015 and the 1-hour Ozone (1979) standard was revoked on June 15, 2005.
Listed by County, Pollutant, then Area
Select a State:  
AK | AL | AR | AZ | CA | CO | CT | DC | DE | FL | GA | GU | IA | ID | IL | IN | KS | KY | LA | MA | MD | ME | MI | MN |
MO | MS | MT | NC | NE | NH | NJ | NM | NV | NY | OH | OR | PA | PR | RI | SC | TN | TX | UT | VA | WA | WI | WV | WY |
Important Notes
County   Pollutant   Area Name Nonattainment in Year Redesignation
to Maintenance
Classification Cty NA
Whole/
Part
Population
(2010)
FIPS
State/
Cnty
DISTRICT OF COLUMBIA
Entire District  1-Hr Ozone (1979) -NAAQS revoked  Washington, DC-MD-VA
92 93 94 95 96 97 98 99 00 01 02 03 04                                            
/ / Severe 15 Whole 601,723 11/001
Entire District  8-Hr Ozone (1997) -NAAQS revoked  Washington, DC-MD-VA
                                                04 05 06 07 08 09 10 11 12 13 14 15
/ / Moderate Whole 601,723 11/001
Entire District  8-Hr Ozone (2008)   Washington, DC-MD-VA
                                                                                12 13 14 15
/ / Marginal Whole 601,723 11/001
Entire District  Carbon Monoxide (1971)   Washington, DC-MD-VA
92 93 94 95                                                                                
03/15/1996 Moderate <= 12.7ppm Whole 601,723 11/001
Entire District  PM-2.5 (1997)   Washington, DC-MD-VA
                                                    05 06 07 08 09 10 11 12 13        
11/05/2014 Moderate Whole 601,723 11/001
Important Notes

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