Lead Contamination

California Department of Public Health Childhood Lead Information

UCI Studies conducted in Santa Ana

Please refer to the the studies below to get a better understanding on lead soil and other lead-related contamination in Santa Ana.

  • November 15, 2022: Social and spatial distribution of soil lead concentrations in the City of Santa, California: Implications for health inequities.
  • September 2022: Use of historical mapping to understand sources of soil-lead contamination: Case study of Santa Ana,
  • July 11, 2022: Maps tie Santa Ana’s contaminated soil to car pollution 100 years ago.
  • June 28, 2022: Based on archival documents such as maps and newspapers, two potential sources of lead from past years seem likely — lead-based paint and leaded gasoline with the gasoline far more prevalent in Santa Ana.
  • June 22, 2022: Two recent studies conducted by researchers at the UCI have shown a strong correlation between lead concentrations in the soil and historical vehicle emissions, specifically in urban, disadvantaged neighborhoods across Santa Ana.
  • June 10, 2022: Use of Radioisotope Ratios of Lead for the Identification of Historical Sources of Soil Lead Contamination in Santa Ana, California.


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