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Questions and Answers about
Testing Your Home For Lead In Paint and Soil

California Department of Health Services
Childhood Lead Poisoning Prevention Branch

1515 Clay St. Suite 1801
Oakland, CA 94612

Lead Hotline - 510-622-5006
FAX - 510-622-5002


On this page...
  • How can I tell if the lead is a hazard?
  • Can I use a lead test kit?
  • If I find lead, what should I do next?


  • Why should I test my home for lead?
    If you have children, lead in your home can cause serious long term health and behavior problems for them.  Lead is a hazard to children under 6 years of age in particular.  Lead in paint, dust and soil is a problem for children because it gets in their bodies when they put their fingers, toys or paint chips or dust into their mouths.  Lead can also harm a pregnant woman and her developing fetus.

    You should consider testing for lead if there are children in your home and...

    If your house was built before 1978, it is especially important to test for lead if... If you are buying or renting a home...
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    Where should I test for lead?
    The most important areas to test for lead are those areas where children spend a lot of time, such as bedrooms, playrooms, kitchens, and play-yards.  It is especially important to test these areas if there is bare soil or if paint is peeling or chipping.

    You should also test places where you plan to repaint or remodel.  Test several different spots.  If you are testing paint, test each different paint color.  If you are testing soil, test different bare soil areas.

     Some good places to test for lead-based paint are...

     Some good places to test for lead-contaminated soil are...
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    How do I test for lead?
    There are 2 recommended ways to test your home for lead.  Whenever you test for lead, it is important to find out how much lead is in the paint or soil you test.

    For a list of State-certified inspector/assessors, go to the State-certified inspector/assessor page on this site.

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    How can I tell if I have lead above the hazard level in my paint or soil?
    The table below shows hazard levels of lead in paint, soil and dust, as determined by the California Department of Health Services (DHS), the U.S. Environmental Protection Agency (EPA) and the U.S. Department of Housing & Urban Development (HUD).
     
    Lead in Paint 
    Hazard Levels  
  • lab test results of 5,000 ppm (parts per million) or 0.5% or more (by weight)

  •   
  • XRF test results of 1.0 milligrams of lead per square centimeter (1.0 mg/cm2) or more 
  • Lead in Bare Soil
    Hazard Levels

  •  lab test results of 400 ppm or more in bare soil in areas where children play 

  •   
  • lab test results of 1,000 ppm or more in all other areas 
  • Lead in Dust
    Hazardous Levels  
  • dust from interior floors with 50 micrograms of lead per square foot (50 µg/ft2) or more

  •   
  • dust from interior horizontal window surfaces with 250 micrograms of lead per square foot (250 µg/ft2) or more 

  •   
  • dust from exterior floors and exterior horizontal window surfaces with 800 micrograms of lead per square foot (800 µg/ft2) or more 

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    IMPORTANT:  No matter what your test results are, the condition of your house's paint and soil is important.  If the soil is covered by grass, bushes or permanent ground coverings, even high levels of lead in the soil may not be hazardous to children.  If you are not planning to remodel and the paint is in good condition -- not chipping or peeling -- it may not be a lead hazard, even if it contains high levels of lead.  If the paint is peeling or chipping, if it is on doors and windows where normal wear and tear causes chipping, or if you plan to remodel the area, you should take steps to prevent the lead from poisoning your children.

    WARNING:  Lead test results are only as good as your testing procedures.  The results will not tell you about the lead content of painted surfaces or soil that you did not test.  Hire a State-certified inspector/assessor to make sure you get accurate testing results.

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    Can I just use a lead test kit from a paint store?
    Kits for testing paint and ceramics are available at most paint and hardware stores for $8 - 10.  They have chemicals that change color when rubbed against a surface that contains lead.  These kits can only tell you if there is lead in the paint you tested.  They will not tell you how much lead is in the paint or if it is a hazard.  You can not use them to test for lead in soil.

     If you decide to use a lead test kit to test your paint, follow the directions on the package very carefully.  Be sure to test the bottom layers of paint.  To do this, use a sharp knife to cut a slanted notch through all the paint layers on the spot you want to test.  Test all the layers of paint in the notch.  Look for the color change indicated by the test kit.

     If your house was built before 1978 and your lead test kit comes out negative (does not change color), you should have an accredited lab test the paint to make sure the lead test kit worked properly.

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    What should I do next?
    If the lead in your paint or soil exceeds the hazard levels listed above, you should...
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