A survey of heavy metals (Hg, Cd, Pb) in drinking water at small and very small houses was conducted in Jakarta, Bogor, Tanggerang and Bekasi (Jabotebek), in 1992. The purpose of this study was to get information about water quality and environmental condition of water sources at low cost housing and very low cost housing in Jabotabek. Forty to sixty samples were taken from each location and an…