US governmental agencies have set limits on lead in drinking water, plumbing, paint, and in occupational settings. State laws also exist and may be more stringent than those of the federal government.

• OSHA (Occupational Safety and Health Administration) standard for lead in air: 0.5 mg/m3 (milligrams per cubic meter)

• EPA maximum level for lead in public drinking water systems: 15 μg/L

• EPA air lead standard 0.15 μg/m3, rolling 3-month average

• Consumer Product Safety Commission standard for lead in paint: less than 0.06% by weight

• EPA standards for lead in new plumbing: less than 0.2% lead in solders and flux, less than 8% lead in pipes and pipe fittings (standards apply to public water systems and residential or nonresidential facilities connected to a public water system)

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