# hayden-pinal-county-az · ARIZONA · Pinal County · Sulfur Dioxide (1971) — Current EPA nonattainment county designations by pollutant

For hayden-pinal-county-az · ARIZONA · Pinal County · Sulfur Dioxide (1971), pollutant / naaqs is Sulfur Dioxide (1971); nonattainment area name is Hayden (Pinal County), AZ; partial county is yes; county or area is Pinal County; state is ARIZONA; data current as of is August 31, 2026, recorded from its source on 2026-08-31.

- **Row ID:** hayden-pinal-county-az _(our reading, not quoted from the source)_
- **State:** ARIZONA _(our reading, not quoted from the source)_
- **County or area:** Pinal County _(verified: appears in the quote below)_
- **Pollutant / NAAQS:** Sulfur Dioxide (1971) _(verified: appears in the quote below)_
- **Partial county:** yes _(our reading, not quoted from the source)_
- **Nonattainment area name:** Hayden (Pinal County), AZ _(verified: appears in the quote below)_
- **Data current as of:** August 31, 2026 _(verified: appears in the quote below)_

## What the source says

> Pinal County | Lead (2008) | * | Hayden, AZ | PM-10 (1987) | * | Hayden, AZ - (Moderate) | PM-10 (1987) | * | Maricopa and Pinal Counties; Phoenix planning area, AZ - (Serious) | PM-10 (1987) | * | Miami, AZ - (Moderate) | PM-10 (1987) | * | Pinal County (part); West Pinal, AZ - (Serious) | PM-2.5 (2006) | * | West Central Pinal, AZ - (Moderate) | Sulfur Dioxide (1971) | * | Hayden (Pinal County), AZ

## Source

- https://www3.epa.gov/airquality/greenbook/ancl.html

Last verified: 2026-08-31. Review by: 2027-02-27.
Part of [Current EPA nonattainment county designations by pollutant](https://referencesource.org/nonattainment-county-designations-by-pollutant/).