Considering the increasing use of alternative fuels and raw materials in clinker manufacture for construction, the environmental behaviour of the resulting cement is a matter of particular concern. As the alternative fuels used in cement manufacture may contain elements not generally found in conventional fuels, this necessitates a study of the leaching performance of cements produced in such processes to evaluate the environmental quality of the final product and guarantee its safe use in construction. The present survey was undertaken to analyse the leaching of heavy metals and other elements from cements manufactured with both conventional and alternative fuels. The results suggest that the controlled use of alternative fuels does not affect the leaching behaviour.