To address white powder falling off walls, first identify the material. If it is asbestos or lead-based paint, wear personal protective equipment (PPE) including respirators, gloves, and goggles. Avoid dry sweeping or sanding to prevent airborne particles. For non-hazardous powders like calcium carbonate, clean gently with a damp cloth. If the powder is hazardous, contact a licensed abatement professional. Remove debris in sealed containers and dispose of per local regulations. Post-cleaning, test the wall for residue.

The primary risks involve inhaling or ingesting toxic substances. Asbestos exposure is linked to mesothelioma and lung cancer, with the EPA reporting that approximately 15,000 annual deaths in the U.S. are asbestos-related. Lead paint particles, common in pre-1978 homes, can cause developmental delays in children and hypertension in adults. A 2020 CDC study found that improper removal of lead paint increases exposure by 300%. OSHA mandates strict protocols for hazardous materials to minimize worker and occupant risks. For non-toxic powders, moisture prevents dust dispersion, reducing inhalation risks by 80% (Journal of Occupational and Environmental Hygiene, 2019). Legal non-compliance may result in fines up to $70,000 per violation under the Toxic Substances Control Act. Proactive testing and professional abatement ensure safety and regulatory adherence, preventing long-term health impacts and financial liabilities.