Lead Poisoning Prevention for Kids: Old Paint, Water, Hidden Sources and When to Test • Living Life as Moms | Mom Hacks, Toddler Snacks, and Kids Activities

Quick answer: The CDC says no safe blood lead level in children has been identified. The most common source is old lead paint and the dust it creates in homes built before 1978, so keep painted surfaces in good shape, clean with wet methods and hire lead-safe certified contractors for renovations. Run cold water before drinking or cooking if you may have lead pipes, consider a filter certified to remove lead, watch for hidden sources such as some imported spices, remedies and toys and ask your child’s doctor about blood lead testing, especially around ages 1 and 2.

Lead poisoning rarely looks dramatic. Most children with elevated lead levels show no obvious symptoms, which is why it can go unnoticed for months. Yet lead can affect a child’s developing brain and nervous system, with effects on learning, attention and behavior that may be lasting.

The good news is that lead exposure is preventable. Knowing where lead hides in homes, water and everyday products lets parents cut off most of the risk. This guide is part of our family safety guide and pairs well with our article on poison prevention at home.

Sources: Centers for Disease Control and Prevention (CDC) Childhood Lead Poisoning Prevention Program; U.S. Environmental Protection Agency (EPA) guidance on lead in paint, dust, soil and drinking water, the Renovation, Repair and Painting (RRP) Rule and the lead disclosure rule; U.S. Food and Drug Administration (FDA) warnings on lead in foods, spices and products; U.S. Consumer Product Safety Commission (CPSC); American Academy of Pediatrics (AAP); Centers for Medicare & Medicaid Services (CMS) Medicaid blood lead screening requirements; NSF International filter certification standards. This is general information, not medical advice. Talk with your child’s doctor about testing.

Table of Contents

Why Lead Is a Particular Danger for Children

Young children are more vulnerable to lead than adults for several reasons described by the CDC:

They put hands and objects in their mouths, which brings lead dust from floors, windowsills and soil into their bodies.
Their bodies absorb more lead than adult bodies do from the same exposure.
Their brains and nervous systems are still developing, which makes them more sensitive to lead’s effects.

The CDC states that no safe blood lead level in children has been identified. Even low levels have been associated with lower IQ, attention problems and lower academic achievement.

To help identify children with higher exposure than most, the CDC uses a blood lead reference value. In 2021 it lowered that value from 5 to 3.5 micrograms per deciliter. A child at or above the reference value has more lead in their blood than most U.S. children and should get follow-up.

Lead Paint and Dust: The Biggest Source

Lead-based paint was banned for residential use in the United States in 1978. Homes built before then may still have lead paint under newer layers, and the EPA notes that homes built before 1960 are the most likely to contain it.

Intact lead paint is less of a hazard. The danger comes when it chips, peels or is ground into dust, which happens most on:

Windows and windowsills, where sashes rub against frames.
Doors and door frames.
Stairs, railings and porches.
Exterior walls, where peeling paint falls into the soil around the house.

Steps to reduce exposure from old paint:

Check the age of your home and any child care or relatives’ homes your child visits often.
Watch for peeling, chipping or chalking paint, and keep children away from it.
Clean with wet methods. Wet-mop floors and wet-wipe windowsills and window wells regularly. Dry sweeping and dusting can spread lead dust.
Wash hands before meals and naps and after outdoor play.
Wash toys, bottles and pacifiers often.
Consider a lead inspection or risk assessment by a certified professional if you live in an older home.

Window areas are a common lead dust hot spot. Our guide to window safety for kids covers other window hazards worth checking at the same time.

Renovation: Where Families Get Exposed Fast

Sanding, scraping, cutting and demolishing old painted surfaces can create large amounts of lead dust in a short time. The EPA’s Renovation, Repair and Painting Rule requires contractors who disturb painted surfaces in homes and child-occupied facilities built before 1978 to be certified and to follow lead-safe work practices.

If you are planning work on an older home:

Hire a contractor certified under the EPA’s RRP program, or check your state’s program if it runs its own.
Keep children and pregnant family members away from the work area, and out of the home during major work if possible.
Expect the contractor to contain the work area with plastic sheeting, minimize dust and clean up with HEPA vacuums and wet wiping.
If you do the work yourself, learn lead-safe practices first. The EPA publishes guidance for do-it-yourselfers.

Homebuyers and renters have protections too. Under the federal lead disclosure rule, sellers and landlords of most housing built before 1978 must disclose known lead hazards and provide the EPA pamphlet Protect Your Family From Lead in Your Home. Buyers generally get an opportunity to have the home inspected for lead before the sale is final.

Lead in Drinking Water

Lead can get into tap water from lead service lines, lead pipes, lead solder and some older brass fixtures. Lead solder in drinking water plumbing was banned by the 1986 amendments to the Safe Drinking Water Act, but older homes can still have it, and many communities still have lead service lines.

To reduce lead in water:

Find out if you have a lead service line. Many water utilities now publish service line inventories, and you can ask your utility directly.
Use only cold water for drinking, cooking and preparing baby formula. Hot water can draw more lead from pipes. Boiling does not remove lead.
Run the tap before using water that has sat in pipes for several hours. The EPA suggests flushing by running the tap, taking a shower or doing laundry.
Use a filter certified to remove lead. Look for certification to NSF/ANSI Standard 53 for lead reduction, or Standard 58 for reverse osmosis systems, and replace cartridges on schedule.
Clean faucet aerators periodically, since particles can collect there.
Test your water. Your utility or state may offer testing, or you can use a certified laboratory.

Hidden Sources Parents Overlook

Beyond paint and water, the CDC and FDA have identified several other sources:

Source	Examples	What to do
Soil	Near old houses, busy roads or industrial sites	Cover bare soil, wash hands after outdoor play, remove shoes at the door
Imported spices and foods	Some imported turmeric, chili powder and other spices; certain candies	Watch FDA alerts and recalls
Traditional remedies and cosmetics	Some folk remedies and cosmetics such as certain kohl or surma products	Avoid products with unknown ingredients
Toys and jewelry	Older or imported toys, costume jewelry, painted items	Check CPSC recalls; keep jewelry away from young children
Pottery and dishes	Some traditionally glazed ceramics, crystal	Do not use them for food or drink unless known to be lead-free
Take-home dust	Jobs in construction, renovation, battery recycling, shooting ranges	Change clothes and shower before contact with children
Hobbies	Fishing sinkers, stained glass, making bullets	Keep materials away from children and wash up afterward

A widely reported example came in 2023, when the FDA announced a recall of certain cinnamon applesauce pouches after children who ate them were found to have elevated blood lead levels. Recalls like that are a reminder to check FDA and CPSC recall lists from time to time. Our room-by-room babyproofing checklist is a good moment to look for older toys and dishes, too.

When Should Children Be Tested?

Because lead poisoning often has no symptoms, a blood test is the only way to know a child’s level.

Medicaid. CMS requires blood lead testing for children enrolled in Medicaid at 12 months and 24 months of age, and testing between 24 and 72 months for children who were not tested earlier.
Other children. The AAP recommends that pediatricians assess risk and test children based on risk factors and local guidance. Many state and local health departments recommend testing at ages 1 and 2 for all children or for those living in older housing or high-risk areas.
Additional testing may be recommended for children who recently arrived from other countries, children with pica (eating non-food items) or children living in homes undergoing renovation.

Ask your child’s doctor whether your child should be tested, especially if you live in an older home or know of a possible source.

What If Your Child's Level Is High?

If a test shows a level at or above the CDC’s reference value, the doctor will usually confirm it with a second test and recommend follow-up. Next steps may include:

Finding the source. Local health departments often help families identify lead hazards in the home.
Removing exposure. That may mean repairs, cleaning, changing water habits or removing products.
Nutrition. The CDC notes that a diet rich in iron, calcium and vitamin C may help reduce the amount of lead the body absorbs.
Developmental monitoring. Children with elevated levels may benefit from developmental screening and early intervention services.
Medical treatment for very high levels, under a doctor’s care.

A Practical Lead Safety Routine for Busy Families

Prevention works best as a set of habits rather than a one-time project. Here is a simple routine based on CDC and EPA guidance:

Weekly

Wet-mop hard floors and wet-wipe windowsills, window wells and porch railings in older homes.
Wash toys, pacifiers and teething items that spend time on the floor.
Vacuum rugs with a HEPA-filter vacuum if you have one.

Every day

Wash children’s hands before meals, snacks and naps and after outdoor play.
Leave shoes at the door to keep soil and dust from coming inside.
Use cold tap water for drinks, cooking and formula.

Every few months

Walk around the house looking for new chipping or peeling paint, inside and out.
Replace water filter cartridges on the schedule the manufacturer lists.
Check FDA and CPSC recall lists for foods, spices, toys and jewelry you own.

Before any project

Find out whether the area you plan to sand, scrape or demolish has lead paint.
Confirm your contractor is certified under the EPA’s RRP program.
Plan where children will stay while dust-producing work happens.

Small habits like these reduce the dust children touch every day, which is the main way they take in lead.

Signs and Symptoms

Most children with elevated blood lead levels have no clear symptoms. When symptoms appear, often at higher levels, they can include irritability, fatigue, loss of appetite, stomach pain, constipation, vomiting and learning or behavior problems. These signs are common in many childhood illnesses, so they cannot confirm or rule out lead poisoning. A blood test is the only reliable way to know.

Frequently Asked Questions

What is a safe lead level for children?

The CDC says no safe blood lead level in children has been identified. It uses a blood lead reference value of 3.5 micrograms per deciliter to identify children with higher levels than most and prompt follow-up.

Does my house have lead paint?

Homes built before 1978 may have lead-based paint, and homes built before 1960 are the most likely to. A certified lead inspector or risk assessor can test painted surfaces and dust.

Does boiling water remove lead?

No. Boiling does not remove lead. Use cold water, flush pipes that have been unused for several hours and use a filter certified to NSF/ANSI Standard 53 for lead reduction if your home may have lead plumbing.

At what age should children be tested for lead?

Medicaid requires testing at 12 and 24 months. For other children, the AAP recommends risk-based testing, and many health departments recommend testing at ages 1 and 2. Ask your child’s doctor.

Are lead test kits from the hardware store reliable?

The EPA recognizes some lead test kits for checking painted surfaces, but results can vary. A certified inspector or risk assessor gives the most reliable picture of lead hazards in a home.

Can lead poisoning be reversed?

Removing the source stops further exposure, and blood levels usually fall over time. Some effects on learning and behavior may be lasting, which is why prevention matters so much.

The Bottom Line

Lead exposure is invisible but preventable. Keep old paint in good condition, clean with wet methods, use certified lead-safe contractors, take steps to reduce lead in your water, watch for hidden sources and ask your child’s doctor about testing. Those steps protect children during the years when lead can do the most harm.