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This paper highlights progress on an important public health issue which, despite significant progress, has now stalled and is in need of renewed investment. The objective is to describe the effectiveness of efforts to reduce childhood lead exposure in Broken Hill - a historic mining town in western NSW - and what is required to further reduce exposure. Lead has no known function in the human body, and emerging evidence suggests that no level of exposure is without health effects. A 1991 blood lead survey of 1-4-year-old children identified lead exposure as a significant public health issue in Broken Hill. A major NSW Government-funded program to reduce lead exposure began in 1994, and, by 2001, blood lead levels had reduced by two-thirds. The program was then integrated into other services and funding significantly reduced; blood lead levels have remained relatively unchanged since 2005. At present, 53% of children in Broken Hill have blood lead levels above the recently released National Health and Medical Research Council draft reference value for lead. Participation in annual blood lead screening declined from 52% to 38% after project funding decreased, but recent changes have doubled participation rates. A comprehensive abatement program is required to further reduce lead exposure in this community, and further research is required into how to maintain low blood lead levels and how best to engage the community about reducing individual lead risks. Findings from such studies would be relevant to the broader Australian community.

Putting the genie back in the bottle: protecting children from lead exposure in the 21st century. A report from the field