Tag: Prevention

Lead Poisoning Causes and Prevention: Sources and Steps

Lead poisoning is caused by swallowing or breathing in lead, and in the US the most common source is dust from old lead-based paint. Other causes include tap water that runs through lead pipes or fixtures, contaminated soil, lead brought home from work or hobbies, and some imported spices, remedies, cosmetics and dishes.

A family wiping window sills during cleaning

In short: lead gets into the body mainly through the mouth (dust on hands, toys and food; paint chips; water) and through the lungs (dust and fumes). Touching lead matters mostly because lead on the hands ends up being swallowed; official sources describe skin absorption of common lead compounds as a much smaller route. Prevention means finding the source before anyone is exposed: test older homes for paint, dust and soil hazards, check your water, keep dust down with wet cleaning and handwashing, leave work lead at work, and avoid products named in FDA and CPSC warnings. If you are worried about exposure, ask a doctor about a blood test or call Poison Control at 1-800-222-1222.

This guide is based on the CDC, EPA, NIOSH, ATSDR, FDA and CPSC. It is general information, not medical advice; our lead poisoning hub has the overview. For what happens in the body, see effects of lead poisoning; for warning signs, see lead poisoning symptoms.

How lead gets into the body

Swallowing (ingestion). The main route for young children. The EPA says children crawl, play on floors and put hands, toys and other objects in their mouths, so they swallow settled dust and soil. The EPA’s 2024 dust-lead rule calls hand-to-mouth contact with floor and surface dust the main pathway of exposure for young children. Adults and children also swallow lead in water, food, spices and remedies.
Breathing (inhalation). Fine dust or fumes from sanding, scraping, cutting or heating painted surfaces, from some jobs such as construction, mining and lead-acid battery recycling, and from hobbies that heat or melt lead. ATSDR says the effects are the same whether lead is breathed in or swallowed.
Skin. See the next section.
Before birth. The CDC says lead stored in a mother’s bones can be released during pregnancy and reach the baby.

Can you get lead poisoning from touching lead?

Touching lead is a risk mainly because of what happens next. Lead dust on the hands gets onto food, cigarettes, toys and fingers and is swallowed. ATSDR’s toxicological profile for lead says the common (inorganic) forms of lead can be absorbed through the skin, but much less efficiently than by breathing or swallowing, apart from hand-to-mouth transfer. NIOSH lists skin as one of the routes in the workplace and says lead’s health effects are the same whether it is breathed in, swallowed or absorbed through the skin.

So the practical answer is: handling a fishing sinker or an old painted window is far less likely to put lead into your body through the skin than through your mouth, but it does leave lead on your hands. Wash your hands with soap and water afterward and before eating, drinking or smoking, and keep children from handling lead objects. NIOSH tells people who work with lead to wash as much skin as they can, with lead-removal soap, before going home.

Lead poisoning from paint

Lead-based paint was banned for homes in 1978, and the CDC says homes built before then probably contain it. The EPA estimates that about three-quarters of homes built before 1978 still have some lead paint, rising to 87% of homes built before 1940. Paint in good condition is usually not a hazard, according to the EPA. It becomes one when it peels, chips or cracks, when it rubs on friction surfaces such as windows and doors, or when it is disturbed by sanding, scraping or renovation, which can create large amounts of fine dust.

The CDC lists lead dust as the most common source of exposure for young children. Our lead paint testing hub explains swab kits, lab tests and professional inspections, and is lead paint dangerous? covers when it is a hazard. Any paid renovation work in a pre-1978 home must follow the EPA’s lead-safe RRP rule.

Lead poisoning from water

Lead usually gets into drinking water from the plumbing, not from the river or well that supplies it. The EPA says lead service lines are the most significant source where they exist, and that homes built before 1986 are more likely to have lead pipes, fixtures and solder. Without a lead service line, brass or chrome-plated brass faucets and lead solder are the most common sources. You cannot see, taste or smell lead in water; a test is the only way to know.

The EPA’s steps: use only cold water for drinking, cooking and baby formula; know that boiling does not remove lead; run the tap before drinking if water has sat for hours (showering or laundry also flushes pipes); clean faucet aerators; and if you use a filter, choose one certified to remove lead and replace the cartridge as directed. See lead in water testing, lead pipes and lead water filters.

Lead in soil and outdoor dust

The EPA says lead in soil comes mainly from old paint along the drip line of older buildings, past use of leaded gasoline near busy roads, and industry such as smelters and battery sites, and that it does not break down over time. Children are exposed when they play in bare soil or when it is tracked indoors. The EPA’s steps: cover bare soil with grass, mulch or other cover, keep children from playing in bare soil near older buildings, use doormats and take shoes off at the door. Gardeners should follow the EPA’s healthy gardening advice. Our dust and soil testing hub explains lab soil tests.

Jobs and hobbies: take-home lead

Most adults with high blood lead are exposed at work, according to NIEHS, in jobs such as construction, mining, welding and battery manufacturing. NIOSH warns that workers can carry lead dust home on their clothes, shoes and hair, putting their families, especially children and pregnant women, at risk. The CDC also names hobbies, such as stained glass work, that involve lead-based products. NIOSH’s steps for workers:

Change into work clothes and shoes that stay at work, and change back before going home.
Shower and wash your hair before leaving work if showers are provided; otherwise wash as much skin as you can with lead-removal soap.
Don’t take home tools, scrap or packaging that may have lead on them.
Store work clothes in a closed plastic bag, away from other clothes, and wash and dry them alone.

Imported products, spices and cosmetics

Federal agencies have found lead in a range of consumer goods, most often imported ones:

Product	What the agency says	Our guide
Spices	FDA has issued alerts on ground cinnamon from several brands with elevated lead; in 2023 cinnamon in applesauce pouches was linked to more than 500 reported cases of lead exposure.	Lead in cinnamon and spices
Cosmetics	FDA warns that kohl, kajal and surma eye cosmetics can contain lead and use color additives that are not approved in the US.	Lead in household items
Traditional remedies and candies	The CDC lists some imported candies and traditional medicines, such as azarcon and greta.	Lead in household items
Pottery and cookware	FDA warns about some traditional lead-glazed pottery and some imported aluminum and brass cookware that may leach lead.	Lead in pottery and dishes
Toys and jewelry	The CDC names some imported and older toys and toy jewelry; CPSC limits lead in children’s products.	Lead in toys and jewelry

Check the FDA and CPSC recall pages, stop using any product named in a warning, and don’t bring home spices, remedies or cosmetics of unknown origin for children. See our lead in household items hub for testing limits: home swab kits are not made for food, spices or cosmetics.

How to prevent lead poisoning: CDC and EPA steps

The CDC calls removing lead hazards before a child is exposed, primary prevention, the most effective approach. These steps come from the CDC and EPA:

Know your home. If it was built before 1978, have it checked for lead paint and dust by a certified inspector or risk assessor. Find one in our professional directory.
Keep dust down. Wet-mop floors and wipe windowsills and other flat surfaces with warm water and an all-purpose cleaner. Never mix ammonia and bleach.
Wash hands and toys. Wash children’s hands before eating and sleeping and after playing outside; wash toys often.
Block access to peeling paint. Keep children away from chipping paint and chewable painted surfaces such as windowsills.
Renovate safely. Hire RRP-certified firms for work in pre-1978 homes and keep children and pregnant women away until cleanup is done.
Test and manage your water. Use cold water for drinking, cooking and formula, and test if you may have lead pipes.
Shoes off, doormats down. Reduce soil and dust tracked indoors.
Leave work lead at work. Follow the NIOSH steps above.
Watch recalls. Check FDA and CPSC warnings for spices, remedies, cosmetics, dishes and toys.
Test children. Ask your child’s doctor about a blood lead test. Medicaid requires testing at 12 and 24 months; see lead and children.

Frequently asked questions

What is the most common cause of lead poisoning?

In the US, lead dust, mostly from old lead-based paint. The CDC names lead dust as the most common source for young children, and NIEHS calls it the most common way people are exposed.

Can you get lead poisoning from touching lead?

Mostly through what reaches your mouth afterward. ATSDR says skin absorption of common lead compounds is much less efficient than swallowing or breathing them. Wash your hands after handling lead and before eating.

Does boiling water remove lead?

No. The EPA says boiling does not remove lead. Use cold water, test it, and use a filter certified for lead if needed.

Is lead paint dangerous if it is not peeling?

The EPA says lead paint in good condition is usually not a hazard, but paint on windows, doors and other rubbing surfaces can make dust, and any sanding or scraping releases it. Test before you renovate.

What should I do if I think my family was exposed?

Ask your doctor or local health department about a blood lead test. If someone may have swallowed something with lead, call Poison Control at 1-800-222-1222; for severe symptoms, call 911. Then find and fix the source.

October 10, 2026

Lead and Children: Risks, Sources, Prevention and Testing

Young children are the people most at risk from lead, because they put their hands and toys in their mouths and because their brains and bodies are still developing. The CDC says no safe blood lead level in children has been identified, and that the most effective protection is to remove lead from a child’s surroundings before exposure happens.

In short: the main sources are dust from old paint in homes built before 1978, drinking water from lead pipes and fixtures, soil, and some imported foods, spices, candies, remedies, toys and jewelry. The CDC, EPA and American Academy of Pediatrics (AAP) recommend keeping dust down with wet cleaning, washing hands and toys often, using cold tap water for drinking and baby formula, hiring lead-safe certified contractors for work on older homes, and checking recalls. Most children with lead in their blood look healthy, so a blood lead test is the only way to know. Ask your child’s doctor about testing.

This page summarizes official guidance. It is not medical advice. If you think your child swallowed something containing lead, call Poison Control at 1-800-222-1222, and call 911 for severe symptoms.

Why children are most at risk

The CDC says children younger than 6 are more likely to be exposed because of their hand-to-mouth behavior. They crawl, play on floors and put toys, fingers and other objects in their mouths, picking up lead dust and soil along the way. The EPA calls young children “the most vulnerable” for the same reason.

The harm is also greater in children. The CDC lists damage to the brain and nervous system, slowed growth and development, learning and behavior problems, and hearing and speech problems, and links these to lower IQ, a shorter attention span and doing less well at school; see effects of lead poisoning. Exposure can begin before birth: the CDC says lead can pass from a pregnant person to the baby, including lead stored in the parent’s bones from earlier exposure.

The CDC estimates that about 500,000 US children have blood lead levels at or above its reference value of 3.5 µg/dL.

Where children’s lead comes from

Source	Why it matters for children	Our guide
Paint and dust in homes built before 1978	The CDC says homes built before 1978 probably contain lead-based paint; peeling or cracking paint makes dust that children swallow or breathe in	Is lead paint dangerous?
Drinking water	Lead can enter water from lead service lines, solder and fixtures	Lead pipes
Soil	The CDC lists soil near airports, highways and factories; the EPA adds soil near building walls	Lead in soil testing
Foods, spices, candies, remedies, cosmetics	The CDC names some imported candies and traditional remedies; the FDA has issued alerts on ground cinnamon and recalled cinnamon applesauce pouches	Lead in cinnamon and spices
Toys and jewelry	The CDC names some imported toys, antique toys and toy jewelry	Lead in toys and jewelry
Dishes and pottery	The FDA warns about some traditional and antique glazed pottery	Lead in pottery and dishes
A parent’s job or hobby	Lead dust can come home on clothes, shoes and tools (CDC, NIOSH)	Lead poisoning

Prevention steps from the CDC, EPA and AAP

The CDC calls removing lead hazards from a child’s environment before exposure (“primary prevention”) the most effective way to avoid long-term harm. The AAP’s 2016 policy statement on preventing childhood lead toxicity makes the same point, stressing that there is no identified safe blood lead level and that reducing lead in housing, soil, water and consumer products pays off. These are the everyday steps official sources list; lead poisoning causes and prevention covers the same ground for the whole family.

At home: dust and paint

In homes built before 1978, regularly wet-mop floors and wipe windowsills and other flat surfaces; household dust can be a major source of lead (CDC). Use warm water and an all-purpose cleaner, and never mix ammonia and bleach products.
Take shoes off at the door so dust and soil stay outside (CDC).
Do not sand, scrape or dry-sweep old paint yourself. For repairs, renovation or painting in pre-1978 homes, hire a firm certified under the EPA’s Renovation, Repair and Painting (RRP) Rule, and keep children and pregnant people away from the work area. See lead-safe renovation (RRP).
If your home was built before 1978, the CDC recommends having it checked by a licensed lead inspector. See lead paint inspection and find a lead professional.

Hands, toys and play

Wash children’s hands often, especially before eating and sleeping, and after playing outside or with pets (CDC).
Wash toys regularly; they can pick up lead from dust and soil (CDC).
Cover bare soil, keep children from playing in it, and use doormats so soil is not tracked indoors (EPA). See dust and soil testing.

Water and baby formula

Use only cold tap water for drinking, cooking and making baby formula; hot water can draw more lead from pipes, and boiling does not remove lead (EPA).
If water has been sitting in the pipes, run the tap, take a shower or do laundry first to flush it (EPA). How long depends on whether you have a lead service line.
Clean faucet aerators regularly, and if you use a filter, choose one certified to reduce lead and replace cartridges on schedule (EPA). See best water filters for lead and how to test water for lead.

Food, products and work

Check FDA alerts and recalls for foods and spices, and CPSC recalls for toys and children’s products. The CDC also advises not letting children play with toys made before 2009, when tighter federal limits for children’s products began to take effect.
Be cautious with imported candies and traditional remedies such as azarcon and greta, which the CDC warns may contain lead.
If someone in the home works with lead, they should change clothes and shoes before coming home and wash work clothes separately (CDC).

Diet

The CDC says a diet rich in iron and calcium is part of follow-up for children with lead in their blood. Diet does not make lead safe or remove it from the home, and supplements should only be used on a doctor’s advice.

Screening and testing

Most children with lead in their blood have no obvious symptoms, so testing is how lead is found. Our blood lead test guide covers it in depth; the key rules are:

Medicaid: children enrolled in Medicaid must be tested at 12 and 24 months, and between 24 and 72 months if never tested. A risk questionnaire alone does not meet the requirement (CMS).
Other children: the CDC recommends testing children at higher risk, including those who live in or visit pre-1978 homes, children from low-income households, children who are immigrants, refugees or recently adopted from other countries, and children exposed through a household member’s job or hobby. The AAP calls for a lead risk assessment at well-child visits at 6, 9, 12, 18 and 24 months.
Results: the CDC’s blood lead reference value is 3.5 µg/dL. It is not a safe level; it flags children with more lead than 97.5% of US children aged 1 to 5.

States set their own rules too, and some require testing of all young children. Ask your pediatrician or state health department.

Lead in school and child care drinking water

Children spend many hours a day at school or child care, and both may have older plumbing.

EPA 3Ts program. The EPA’s voluntary 3Ts program (Training, Testing and Taking action) gives schools and child care facilities a toolkit for sampling their taps, reading the results and fixing problems.
Lead and Copper Rule Improvements (LCRI). Under the EPA’s final rule from October 2024, community water systems must, starting November 1, 2027, compile a list of the schools and licensed child care facilities they serve. In the first five years, they must sample at least 20% of the elementary schools and child care facilities each year, sample secondary schools on request, and share the results with the facility and health officials. States may waive this where an equally strict state or local program exists. Rules can change, so check the EPA and your water system for the current schedule.
AAP recommendation. In its 2016 policy statement, the AAP urged state and local governments to make sure water fountains in schools do not exceed 1 part per billion (ppb) of lead. That is a recommendation, not a federal law.

Ask your school or child care center whether its taps have been tested, when, and where the results are posted. Some states require testing on their own schedule.

When to call a doctor or Poison Control

Situation	Who to contact
Severe symptoms such as seizures, repeated vomiting or loss of consciousness	911
Your child swallowed paint chips, a piece of jewelry or a product that may contain lead	Poison Control, 1-800-222-1222
Your home has old paint, lead pipes or recent renovation, or your child used a recalled product	Your child’s doctor or local health department, to ask about a blood lead test
You want your home checked	A certified lead inspector or risk assessor; see find a lead professional

More on symptoms is on our lead poisoning symptoms page and the lead poisoning hub.

Frequently asked questions

What age is lead most dangerous for children?

The CDC says children younger than 6 are more likely to be exposed because of hand-to-mouth behavior, and Medicaid requires testing at 12 and 24 months because those are ages of high risk. Exposure before birth also matters.

How can I protect my baby from lead?

Official steps include wet-cleaning dust in older homes, washing hands and toys, using cold tap water for drinking and formula, hiring RRP-certified contractors for work on pre-1978 homes, and checking recalls. Ask your pediatrician about a blood lead test.

Do children with lead poisoning look sick?

Usually not. The CDC says most children with lead in their blood have no obvious immediate symptoms, which is why testing matters.

Is there lead in school drinking water?

It can happen when plumbing or fixtures contain lead. Under the EPA’s 2024 rule, water systems must begin sampling elementary schools and child care facilities from November 1, 2027. Ask your school whether it has tested.

Should I buy a home test to check my child for lead?

No home kit tests a child. Blood lead tests are done through a doctor, health department or lab. Home kits test surfaces or water, and each has limits; see our lead test kits guide.

October 10, 2026