Mulch Madness: A Community-Academic Partnership for Lead Poisoning Prevention.

BACKGROUND: Soil constitutes a major source of childhood lead exposure, disproportionately affecting communities of color. Mulching offers a low-cost interim control. OBJECTIVES: A community-academic partnership was established for lead poisoning prevention, with a three-fold aim: (1) control soil lead hazards by applying mulch, (2) identify home lead hazards with screening kits, and (3) connect residents to resources to address lead hazards. METHODS: Student volunteers canvassed neighborhoods one month prior to the annual event. They requested consent for mulching, distributed lead screening kits, and screened residents for grant eligibility. Soil samples were collected from each home before mulching. According to principles of community-based participatory research, materials and plans were iterative, guided and adjusted by neighborhood association feedback, and detailed reports about home lead results were shared with each participating resident. Composite neighborhood data and survey results were shared with volunteers and community partners. RESULTS: The project was evaluated in the third (41 homes) and fourth (48 homes) years of implementation. Before mulching, the median soil lead level was over 400 ppm, and after mulching, it was less than 20 ppm. Lead screening kits identified widespread lead hazards in paint, soil, and dust, but not water. Challenges remain in (a) increasing child blood lead testing and (b) increasing submissions for city grant funding for lead abatement. Evaluation surveys indicate a sense of ownership in the project among community partners and high levels of engagement among students. CONCLUSIONS: Community-academic partnerships are an effective tool for lead poisoning prevention, generating evidence for public health action.

Validation of a low-cost lead hazard screening kit for the home environment.

The main sources of lead exposure for children occur in the home environment, yet no low-cost analytical methods exist to screen homes for lead hazards. Previously, an inexpensive (~$20), quantitative lead screening kit was developed in which residents collect soil, paint, and dust samples that are returned to a laboratory for lead analysis using X-ray fluorescence spectroscopy (XRF). This screening kit was initially validated in 2020; it was determined that in situ and ex situ XRF lead measurements on the same samples exhibited strong sensitivity, specificity, and accuracy. As a follow-up to the initial validation, an implementation study and further statistical analyses were conducted. Correlation analysis using the results from nearly 400 screening kits identified an overall lack of correlation between sample types, reinforcing the utility of all eight sample locations. Principal component analysis searched for underlying correlations in sample types and provided evidence that both interior and exterior paint are major sources of lead hazards for Indiana homes. The implementation study compared the results of the government-standard lead inspection and risk assessment (LIRA) and the lead screening kit in 107 Indiana homes. In the United States, the LIRA is a thorough inspection of paint, dust, and soil that is usually state mandated in response to a child's elevated blood level and is used to identify where remediation efforts should be focused. The lead screening kit and LIRA agreed on the presence of lead in 79 of the 107 homes tested (74%). Discrepancies in agreement are likely the result of differences in the sample location and number of samples collected by each method. Overall, these results suggest that the lead screening kit is an acceptable resource that could be used to expand the services health departments provide for lead prevention. Integr Environ Assess Manag 2024;20:1504-1513. © 2024 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).