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Lead (1978) Designated Area/State Information
Lead (1978) Designated Area/State Information
Data is current as of May 31, 2025Lead (1978) Notes
| Area Name | State | Current Status | Current Classification or at Redesignation |
No. Counties |
2010 Population |
EPA Region |
|---|---|---|---|---|---|---|
|
Click underlined column heading to change report order. click area name for state/county list |
click for Classification history |
|||||
Total Areas |
Total Counties |
Total Population (2010) |
||||
| Nonattainment | 1 | 1 | 2,560 | |||
| Maintenance | 12 | 11 | 2,202,314 | |||
| Nonattainment and Maintenance | 13 | 12 | 2,204,874 | |||
| Collin County, TX | TX | Maintenance | N/A | 1 | 782,353 | 06 |
| Dakota County, MN | MN | Maintenance | N/A | 1 | 318,833 | 05 |
| Douglas County (part); Portion of city of Omaha, NE | NE | Maintenance | N/A | 1 | 1,242 | 07 |
| Fayette County, TN | TN | Maintenance | N/A | 1 | 38,033 | 04 |
| Iron County (part); Dent Township, MO | MO | Maintenance | N/A | 1 | 1,194 | 07 |
| Iron County (part); Liberty and Arcadia, MO | MO | Maintenance | N/A | 1 | 6,066 | 07 |
| Jefferson County (part); Herculaneum, MO | MO | Nonattainme | N/A | 1 | 2,560 | 07 |
| Jefferson County, AL | AL | Maintenance | N/A | 1 | 658,472 | 04 |
| Lewis & Clark County (part); City of East Helena and vicinity, MT | MT | Maintenance | N/A | 1 | 2,669 | 08 |
| Marion County; Franklin Township, IN | IN | Maintenance | N/A | 1 | 18,158 | 05 |
| Muscogee County, GA | GA | Maintenance | N/A | 1 | 189,886 | 04 |
| Shelby County, TN | TN | Maintenance | N/A | 1 | 2,226 | 04 |
| Williamson County, TN | TN | Maintenance | N/A | 1 | 183,182 | 04 |
Lead (1978) Notes
County subtotals and grand totals may not equal sum of the counties. Part counties are only counted one time within groupings. Multi-state areas are counted only once in area totals, and are counted in maintenance totals when all states in the area have been redesignated.
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