Summary:

Leachates in the landfill site both result from direct flow of water from atmospheric precipitations and arise during the process of biochemical changes, most frequently organic compounds. The aim of the research was presentation of several selected heavy metals content in the leachate from landfill site posing a hazard to the environment. The landfill site is situated in Wola Suchożebrska, in the eastern part of the Mazowieckie voivodeship in the Podlaski county. It receives waste from the city of Siedlce and several neighbouring communes. Leachates were collected in compliance with the PN-ISO 5667-10:1997 standard taking in to consideration the vertical stratification of the leachate quality. The research covered concentrations of Pb, Cd, Cu, Zn, Cr and Hg.
No elevated concentrations of any of the analyzed indices was assessed over the 2007-2012 period in industrial waste supplied to the sewer system. Obtained results confirmed that during the recent years of the landfill exploitation it has been receiving only wastes whose storage does not pose a potential source of environmental pollution with heavy metals, on condition that proper accumulation and treatment of leachates is maintained.