What are the symptoms of lead exposure in children?

Low-level lead exposure often has no visible symptoms, which is why testing is so important. At higher levels, children may show irritability, fatigue, loss of appetite, stomach pain, constipation, difficulty concentrating, or developmental regression. Very high levels can cause vomiting, seizures, and other serious symptoms requiring immediate medical attention.

Can lead exposure be reversed?

Once lead exposure is stopped and the source removed, blood lead levels will decrease over time. However, some effects on brain development from early exposure may be lasting. Early intervention services, good nutrition, and a stimulating home environment can help children reach their full potential even after exposure.

Is my child at risk if our home was built after 1978?

The risk from lead paint is significantly lower in homes built after 1978 when lead paint was banned. However, other sources like older plumbing, imported goods, and contaminated soil can still pose risks. If you have concerns, talk to your pediatrician about whether testing is appropriate for your child.

Does a water filter remove lead?

Filters certified to NSF Standard 53 for lead removal are effective at reducing lead in drinking water. Look for the certification on the packaging. Pitcher filters, faucet-mounted filters, and under-sink systems are all available with lead certification. Replace filters on schedule for them to remain effective.

How often should my child be tested for lead?

The AAP recommends testing at ages one and two for children at risk. Your state may have additional requirements. After that, test if your living situation changes - for example, moving into an older home or beginning renovations. Your pediatrician can advise on the appropriate testing schedule based on your specific risk factors.

Lead Exposure: Where It Hides and What to Do

Published on 2025-07-31

Lead exposure in children is one of those problems that is easy to overlook because you cannot see it, smell it, or taste it. But even low levels of lead in a child's blood can affect brain development, learning, and behavior. The good news is that lead exposure is almost entirely preventable once you know where it hides. Here is what every parent should know. ## Where Lead Hides Lead was everywhere in the mid-20th century. Although it has been banned from paint (1978) and gasoline (1996), the legacy remains in older homes, soil, and water systems. The most common sources of childhood lead exposure today are: **Paint in older homes.** If your home was built before 1978, there is a chance it contains lead-based paint. The paint is not dangerous while intact - the risk comes when it chips, peels, or is disturbed during renovations. Lead dust settles on floors, windowsills, and toys, and young children ingest it through normal hand-to-mouth behavior. **Soil around older buildings.** Decades of leaded gasoline exhaust and exterior paint chips have contaminated soil near roads and older structures. Children who play in bare dirt near these areas can be exposed. **Drinking water.** Lead can leach into water from old pipes, solder, and fixtures - especially in homes built before 1986. The water itself is not contaminated at the source; the lead enters as water sits in or flows through aging plumbing. **Imported goods.** Some toys, jewelry, candy, spices, and traditional remedies manufactured outside the US may contain lead. The FDA and CPSC issue recalls regularly, but not everything gets caught. **Occupational take-home.** Parents who work in construction, battery manufacturing, auto repair, or painting may carry lead dust home on clothing, shoes, and skin. ## How to Reduce Your Child's Risk Prevention is straightforward and effective: - **Test your home.** If it was built before 1978, have it tested for lead paint. Home test kits are available at hardware stores, or you can hire a certified inspector for a more thorough assessment. - **Keep surfaces clean.** Wet-mop floors and wipe windowsills regularly. Lead dust is too fine for dry sweeping to capture - a damp cloth or mop is more effective. - **Run the tap before drinking.** If you have older plumbing, run cold water for 30 seconds to two minutes before using it for drinking or cooking, especially in the morning. Hot water absorbs more lead from pipes, so always use cold water for food preparation. - **Wash hands frequently.** Before meals and after playing outside. This simple habit - see our guide on [handwashing for preschoolers](/blog/handwashing-habits-preschoolers) - removes lead dust from hands before it reaches your child's mouth. - **Feed a balanced diet.** Children with adequate iron, calcium, and vitamin C absorb less lead. A diet rich in lean proteins, dairy, fruits, and vegetables provides natural protection. - **Remove shoes at the door.** This prevents tracking contaminated soil through your home. - **Check for recalls.** Before buying imported toys, cosmetics, or traditional remedies, check the CPSC and FDA recall databases. ## When to Get Your Child Tested The AAP recommends blood lead testing at ages one and two, especially if your child lives in or regularly visits a home built before 1978, lives in an area with known lead contamination, or has a sibling or playmate who has tested positive for elevated lead levels. Many states require lead testing for children enrolled in Medicaid. Ask your pediatrician at your child's next checkup - blood lead testing is a simple finger-prick or blood draw. ## What Elevated Lead Levels Mean The CDC uses a reference value of 3.5 micrograms per deciliter to identify children with blood lead levels higher than most. There is no known safe level of lead in children. Even levels below the reference value are associated with subtle effects on IQ, attention, and behavior. If your child's test comes back elevated: - **Do not panic.** Elevated lead levels are treatable, and the most important step is removing the source of exposure. - **Identify and eliminate the source.** Your pediatrician or local health department can help you figure out where the lead is coming from. - **Follow up with your doctor.** Re-testing and monitoring ensure levels are coming down. In rare cases of very high exposure, chelation therapy may be recommended. - **Support your child's development.** A stimulating environment, good nutrition, and regular well-child visits help mitigate the effects of past exposure. ## Know Your Resources Your local health department can provide free or low-cost home lead inspections and water testing. The EPA's Safe Drinking Water Hotline (800-426-4791) can answer questions about water safety. Many states offer lead abatement assistance programs for qualifying families. Lead exposure is a solvable problem. Test your home, clean smart, and talk to your pediatrician. The effort you put in now protects your child's developing brain for life.

Frequently Asked Questions

What are the symptoms of lead exposure in children?: Low-level lead exposure often has no visible symptoms, which is why testing is so important. At higher levels, children may show irritability, fatigue, loss of appetite, stomach pain, constipation, difficulty concentrating, or developmental regression. Very high levels can cause vomiting, seizures, and other serious symptoms requiring immediate medical attention.
Can lead exposure be reversed?: Once lead exposure is stopped and the source removed, blood lead levels will decrease over time. However, some effects on brain development from early exposure may be lasting. Early intervention services, good nutrition, and a stimulating home environment can help children reach their full potential even after exposure.
Is my child at risk if our home was built after 1978?: The risk from lead paint is significantly lower in homes built after 1978 when lead paint was banned. However, other sources like older plumbing, imported goods, and contaminated soil can still pose risks. If you have concerns, talk to your pediatrician about whether testing is appropriate for your child.
Does a water filter remove lead?: Filters certified to NSF Standard 53 for lead removal are effective at reducing lead in drinking water. Look for the certification on the packaging. Pitcher filters, faucet-mounted filters, and under-sink systems are all available with lead certification. Replace filters on schedule for them to remain effective.
How often should my child be tested for lead?: The AAP recommends testing at ages one and two for children at risk. Your state may have additional requirements. After that, test if your living situation changes - for example, moving into an older home or beginning renovations. Your pediatrician can advise on the appropriate testing schedule based on your specific risk factors.