Lead Hazards
Lead Hazards & Health Effects
Why lead is dangerous, who's most at risk, and where it's found.
Why Lead Is Dangerous
Lead is a toxic metal that accumulates in the body and causes permanent harm even at low levels. There is NO safe level of lead exposure.
Health effects include brain and nervous system damage, learning and behavior problems, kidney damage, and reproductive harm. The danger comes mainly from inhaling or ingesting lead-contaminated DUST.
Who Is Most at Risk
CHILDREN UNDER 6 and PREGNANT WOMEN are most vulnerable. Children absorb lead more readily, and their developing brains are easily harmed — causing lifelong learning and behavioral effects.
Children are exposed by normal hand-to-mouth behavior with lead dust on floors, windowsills, and toys. This is why the RRP rule focuses on child-occupied facilities and homes.
Where Lead Is Found
Lead-based paint was banned for residential use in 1978. Assume homes built BEFORE 1978 may contain lead paint — the older the home, the more likely and the higher the lead content.
Lead is most hazardous on FRICTION/IMPACT surfaces (windows, doors) and where paint is deteriorating. Renovation that disturbs old paint creates hazardous lead dust.
📖 Key Terms
- Lead dust
- The primary exposure route — inhaled or ingested fine lead particles.
- Pre-1978 housing
- Homes that may contain lead-based paint (banned for residential use in 1978).
- Child-occupied facility
- A building regularly visited by children under 6 (e.g. daycare, school).
- Friction surfaces
- Windows/doors where paint wears and generates lead dust.
💡 Exam Tips
- ▸There is no safe level of lead exposure.
- ▸Children under 6 and pregnant women are most at risk.
- ▸Assume homes built before 1978 may contain lead-based paint.
- ▸Lead dust (inhaled/ingested) is the primary exposure route.