Any level of lead paint dust in is considered hazardous, according to new requirements for identifying and cleaning up the harmful dust in certain homes and child-care facilities across the country, finalized Thursday by the US Environmental Protection Agency.

In a ruling issued Thursday, the EPA is cracking down on lead paint dust that remains in millions of homes and poses a health risk to young children.

The Environmental Protection Agency on Thursday announced the finalization of a rule that declares any detectable amount of the toxin in a home or child care center to be hazardous.