2.1 The requirements of the Convention relating to approval of BWMS used by ships are
set out in regulation D-3.
2.2 Regulation
D-2 stipulates that ships conducting ballast water management in
accordance with the ballast water performance standard of the Convention shall
discharge:
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.1 less than 10 viable organisms per cubic metre greater than or equal to 50
μm in minimum dimension;
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.2 less than 10 viable organisms per millilitre less than 50 μm in minimum
dimension and greater than or equal to 10 μm in minimum dimension; and
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.3 less than the following concentrations of indicator microbes, as a human
health standard:
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.1 Toxicogenic Vibrio cholerae (serotypes O1 and O139) with
less than 1 colony forming unit (cfu) per 100 mL or less than 1 cfu
per 1 g (wet weight) of zooplankton samples;
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.2 Escherichia coli less than 250 cfu per 100 mL; and
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.3 Intestinal Enterococci less than 100 cfu per 100 mL.