This paper presents research on the number of heterotrophic bacteria, mannitol-positive staphylococci, actinomycetes and mould fungi in the air on the premises of a landfill site in Żółwin-Wypaleniska and in the surrounding area. Researches has revealed that mould fungi were the most numerous, constituting approximately 60-61% of the entire air microflora. Heterotrophic bacteria and actinomycetes were less numerous (accordingly 30% and 8-9% on average). Mannitol-positive staphylococci made the least numerous group, making up only 1% of the microbial communities.
The highest number of airborne microorganisms was identified in the central part of the landfill site (Station II ). Further from the landfill site, the lower number of microorganisms was detected. Cocci were the most numerous (68%), while bacilli and rod-shaped morphological forms were less numerous, constituting between 15% and 16% of the entire population of microorganisms.