Arizona county can now force paint makers to cut pollution if air quality gets worse

US environmental regulators are approving new rules for Maricopa County, Arizona. These rules let the county lower pollution limits for paints and coatings if local air quality targets are not met.

Local governments often struggle to enforce air quality rules because they lack specific triggers and enforcement powers. This change gives Maricopa County a clear, pre-approved way to tighten pollution limits on a specific industry. It means paint manufacturers in the county now face a direct financial risk if air quality worsens.