GLOBAL IMO STANDARDS
The International Convention for the Control and Management of Ships Ballast Water & Sediments was adopted by Diplomatic Conference at IMO in London, February 2004.
STATUS RATIFICATION BWMC
The Ballast Water Management Convention was ratified on 8 September 2016, and will enter into force on 8 September 2017.
Regulation D2 Ballast Water Performance Standard
Ships conducting Ballast Water Management in accordance with this regulation shall discharge less than 10 viable organisms per cubic metre greater than or equal to 50 micrometres in minimum dimension and less than 10 viable organisms per milliliter less than 50 micrometres in minimum dimension and greater than or equal to 10 micrometres in minimum dimension; and discharge of the indicator microbes shall not exceed the specified concentrations described in paragraph 2.
Indicator microbes, as a human health standard, shall include:
- Toxicogenic Vibrio cholerae (O1 and O139) with less than 1 colony forming unit (cfu) per 100 milliliters or less than 1 cfu per 1 gram (wet weight) zooplankton samples.
- Escherichia coli less than 250 cfu per 100 milliliters.
- Intestinal Enterococci less than 100 cfu per 100 milliliters.