areas close to urban solid waste landfi ll sites

OBJECTIVE: To evaluate the association between living close to solid waste landfi ll sites and occurrences of cancer and congenital malformations among populations in their vicinity. METHODS: Deaths among people living in the municipality of São Paulo, Southeastern Brazil, between 1998 and 2002 were selected and geocoded, according to selected causes. Over the period evaluated, there were 351 deaths due to liver cancer, 160 due to bladder cancer and 224 due to leukemia, among adults, 25 due to childhood leukemia and 299 due to congenital malformation, in areas close to landfi ll sites. Buffer zones of radius 2 km around the 15 sites delimited the areas exposed. Standardized mortality ratios for each outcome were analyzed in Bayesian spatial models. RESULTS: In a general manner, the highest values for the standardized mortality ratios were found in more central areas of the municipality, while the landfi ll sites were located in more peripheral areas. The standardized mortality ratios did not indicate any excess risk for people living in areas close to solid waste landfi ll sites in the municipality of São Paulo. For landfi ll sites in operation, there was a greater risk of bladder and liver cancer, and death due to congenital malformation, but without statistical signifi cance. CONCLUSIONS: No increase in the risk of cancer or congenital malformations was found in areas in the vicinity of urban waste dumps in the municipality of São Paulo. The weak associations and the imprecision of the estimates obtained did not allow any causal relationship to be established. DESCRIPTORS: Environmental Risks. Housing. Sanitary Landfi ll. Solid Wastes. Cause of Death. Neoplasms. Mortality Rate. Geographic Information Systems.