Childhood Blood Lead Surveillance Data — Louisiana
What Louisiana tracks
Louisiana's Office of Public Health monitors blood lead levels in children through its childhood lead poisoning prevention program. This surveillance helps identify trends and guide public health response, especially in communities with aging water infrastructure or other lead sources.
The state relies on data from labs, healthcare providers, and Medicaid claims to understand how many children have elevated blood lead levels (5 micrograms per deciliter or higher, the CDC's current reference value). However, not all children get tested, so these numbers represent identified cases—not a full picture of childhood lead exposure statewide.
Medicaid coverage and screening
Louisiana Medicaid covers blood lead testing for enrolled children. The state requires labs to report results to the health department, which helps track patterns. Children on Medicaid may be tested more regularly than uninsured or privately insured children, so surveillance data reflects this population more completely.
County-level data
The CDC maintains county-level estimates of the percentage of children with elevated blood lead levels. These estimates combine state surveillance data, National Health and Nutrition Examination Survey (NHANES) data, and other sources. You can access county-specific estimates through the CDC's interactive mapping tool, which shows relative risk across Louisiana parishes.
How to request data
Contact the Louisiana Office of Public Health, Office of Epidemiology for specific surveillance reports and annual data summaries. You can also request data broken down by parish, age group, or time period. The office can explain which years and populations are covered in each dataset and any limitations in testing coverage.
For context on your own community's water system, check whether your utility participates in the Lead and Copper Rule—this addresses lead in drinking water pipes separately from blood lead surveillance.
Why this matters
Blood lead surveillance helps identify which areas may have multiple lead sources: old pipes, paint, soil, and other hazards. If your parish shows elevated percentages, it may signal the need for more aggressive outreach about water testing, home maintenance, or utility lead line replacement programs.
Next steps for residents
- Request your water system's lead service line inventory from your local utility to learn whether your home is known to have a lead line.
- Contact your pediatrician about blood lead screening for children under 6—especially if you live in an older neighborhood or have concerns about your home.
- Reach out to the Louisiana Office of Public Health if you want county-level or neighborhood-level surveillance data to understand local trends.
- Check the CDC's interactive map for parish-level elevated blood lead percentages in your area.
```json [ { "q": "What does an elevated blood lead level mean for my child?", "a": "The CDC's current reference value is 5 micrograms per deciliter. Any level at or above this warrants follow-up testing and investigation into sources (water pipes, paint, soil, dust). Talk to your pediatrician about what this means for your child's health and next steps." }, { "q": "Does Louisiana test all children for lead?", "a": "No. Medicaid-enrolled children are tested more routinely, but not all children in Louisiana are screened. The surveillance data shows trends among children who were tested, not the entire population." }, { "q": "How do I find out if my parish has high blood lead levels?", "a": "The CDC's online tool maps county-level (parish-level) estimates of elevated blood lead percentages. Your pediatrician or local health department can also share data specific to your area." }, { "q": "Is my child's high blood lead level from my water?", "a": "Lead in drinking water is one possible source, but not the only one. Paint, soil, dust, and certain imported goods can also contain lead. A home assessment and water test can help identify whether your pipes are a factor. Talk to your pediatrician and local health department." }