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Childhood blood lead surveillance data in Washington

What do blood lead levels look like for children in Washington?

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Childhood Blood Lead Levels in Washington

Understanding lead exposure in Washington children

Lead in drinking water is one of many sources of lead exposure for children. Blood lead testing is the only way to know whether a child has been exposed. Washington's Department of Health tracks blood lead levels across the state to identify where children may be at higher risk.

Washington's blood lead surveillance program

Washington requires healthcare providers to test children's blood lead levels at ages 12 and 24 months, and again at ages 3–5 years. The state also collects data from all blood lead tests performed in the state through its childhood blood lead surveillance system. This helps identify communities where lead exposure is more common.

Medicaid in Washington covers blood lead testing for all eligible children. Even if your child isn't on Medicaid, your pediatrician can order a test—ask during your next visit.

Where to find blood lead data

The Washington Department of Health's Lead Program tracks county-level data on the percentage of children with elevated blood lead levels (5 micrograms per deciliter or higher, the CDC's reference level). This data is updated regularly and is publicly available.

To access:

  • County-level summaries: Contact the Washington Department of Health Lead Program directly at 1-800-633-7599 or visit the DOH website for current surveillance reports.
  • Your child's test results: Ask your pediatrician or the clinic where testing was done. Results are confidential and belong to your family.

What the data means

If your county shows a higher percentage of children with elevated blood lead levels, it doesn't mean your child definitely has lead exposure—but it's a signal to get your child tested and to think about lead sources in your home and neighborhood. Common sources include old house paint, contaminated soil, certain toys and products, and yes, drinking water from lead service lines or old plumbing.

Next steps for residents

  • Schedule a blood lead test at your child's next pediatrician visit, especially if your child is under 6.
  • Ask your water utility whether your service line is made of lead. Most utilities in Washington now have this information available (check LeadPipeLookup for your system).
  • Request surveillance data from the Washington Department of Health Lead Program if you want to know your county's trends.
  • Call the CDC's lead hotline at 1-800-CDC-INFO if you have health questions about blood lead levels.

Related topics in Washington

Common questions

What blood lead level is considered elevated in Washington?

Washington and the CDC use 5 micrograms per deciliter (µg/dL) as the reference level for elevated blood lead in children. A child with a level at or above this should be evaluated for sources of exposure and may need follow-up testing.

Does Washington Medicaid cover blood lead testing for children?

Yes. Medicaid in Washington covers blood lead screening at ages 12 and 24 months, and ages 3–5. Even without Medicaid, your pediatrician can order a test—ask about cost if you're uninsured.

How do I find out if my county has high childhood blood lead levels?

Contact the Washington Department of Health Lead Program at 1-800-633-7599 or check their website for current county-level surveillance reports and data.

Can lead in drinking water alone cause elevated blood lead in my child?

Lead in water is one possible source, but children are often exposed from multiple sources like old paint, soil, and products. A blood lead test shows total exposure, and your pediatrician or the local health department can help identify where lead in your home may be coming from.