iMetAMOS classification output identifies possible contamination. On sample ERR233356 retrieved from the Sequence Read Archive, the majority of data is clearly sourced from a Mycobacterium. However, a significant fraction of the data (~10% of reads or ~29% of assembly) belongs to other, mostly unidentified, organisms. A subset of 3% of the reads (1.81 Mbp of the assembly) is identified as S. aureus and covers over 60% of the S. aureus genome. iMetAMOS automatically identified this potential contaminant and binned the contigs by genus to facilitate easy confirmation and removal by the user.