Which step may be required before discharging ballast water?

• A. Treat ballast water
• B. Do nothing
• C. Increase ballast water before discharge
• D. Ignore ballast water

Answer: (A)

The step being tested is treating ballast water before discharge. The purpose is to prevent transporting aquatic organisms and sediments from one area to another, which can spread invasive species and disrupt ecosystems. Ballast water treatment systems (often a combination of filtration and disinfection, such as UV or chemical methods) reduce or eliminate living organisms to meet regulatory discharge standards. This is why treating ballast water is the required step.

Doing nothing or ignoring ballast water would fail to meet environmental and regulatory requirements, and increasing the ballast water before discharge would only increase the volume that needs treatment without addressing the problem.