Lead Poisoning Data and Data Analysis

Information on this page has been organized into three categories.  Please choose one of the following tabs.

Annual Reports

The annual reports on childhood lead poisoning in Wisconsin include the number of children tested and poisoned and number of cases (level of lead in blood requires intervention) at age one, age two, ages zero to five, and ages three to five not previously tested for each local health department jurisdiction. The reports also include prevalence rates and rates for children enrolled in Medicaid and WIC programs.

These annual reports for Wisconsin comprise local health department jurisdiction and statewide totals and rates of the number of children tested for lead and found to be lead poisoned. From 1991 - 2011, the Centers for Disease Control and Prevention (CDC) defined lead poisoning as a blood lead level (BLL) of 10 micrograms per deciliter (mcg/dL) or greater and recommended public health intervention for those children. According to Wisconsin Statute, a child with a BLL of 20 mcg/dL or greater represents a "case" and requires public health intervention. Thus, the reports also include the number of cases of children with extremely high levels of lead by health department jurisdiction.

In 2012, CDC lowered the reference level for intervention from 10 mcg/dL to 5 mcg/dL, increasing the number of Wisconsin children under age 6 found to be lead exposed by a factor of five. The data report for 2011 - 2013 is in a different format from previous years. In addition to the number of children at 10 mcg/dL or greater, it includes the number and rate (percent) of children with BLLs between 5 and 9 mcg/dL. Also included is a time trend for the state of the number of children tested for lead from 2001 - 2013 and a time trend for those found to be lead poisoned in that same time frame.

Reports are available as PDF files for the following years:

2003 (P-00817-2003, PDF, 43 KB)
 

2006 (P-00817-2006, PDF, 43 KB)
 

2009 (P-00817-2009, PDF, 55 KB)

2004 (P-00817-2004, PDF, 44 KB)

2007 (P-00817-2007, PDF, 209 KB)

2010 (P-00817-2010, PDF, 78 KB)

2005 (P-00817-2005, PDF, 50 KB)

2008 (P-00817-2008, PDF, 211 KB)

2011-2013 (P-00665, PDF, 4 MB)

Searchable Database

The Wisconsin Environmental Public Health Tracking Program webpage is a resource that allows you to query data on childhood lead poisoning in Wisconsin and other environmental and health topics.

Access the Lead Poisoning Data

Data Analysis/Time Trends

This tab contains graphs showing the trends of (1) testing for and (2) identifying childhood lead poisoning in Wisconsin from 2001 to 2013.

Statewide surveillance of childhood lead poisoning in Wisconsin has been conducted since 1991. Lead poisoning in children is defined in Wisconsin Statute Chapter 254.11 (9) as a level of lead in the blood of 10 or more micrograms per 100 milliliters of blood. Due to the wealth of research showing significant learning, behavioral and lifelong health effects of lead on children at levels below 10 mcg/dL, in May 2012, CDC lowered the level of concern to the reference value of 5 mcg/dL for precautionary action. This increases the number of Wisconsin children found to be lead exposed by a factor of 5.

In Wisconsin, how many children have been lead poisoned over the last ten years?

During the years 2001 to 2013, the number of children tested for lead poisoning remained static from 2004 to 2006 at about 80,000 children per year and then increased in 2007 through 2011 to more than 100,000 children annually. Since then the number of children under age 6 tested for lead started to decline again.  Click on the link below to view the graph.

https://www.dhs.wisconsin.gov/sites/default/files/time-trend-tested-2001...

The time trend for the number of children found to be lead poisoned (10 mcg/dL) was on the decline from 2000 to 2013; however, looking at the number of children at the lower reference value of 5 mcg/dL, the increase in the number of children is sizeable.  Click on the link below to view the graph.

https://www.dhs.wisconsin.gov/sites/default/files/time-trend-poisoned-20...

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Last Revised: August 14, 2015