What is a common source of contamination in ship drinking water?

Improperly maintained water storage tanks can be a significant source of contamination in ship drinking water. Over time, if these tanks are not regularly cleaned and inspected, they can develop biofilms, sediment build-up, and harbor harmful microorganisms. This contamination could lead to the potential spread of waterborne illnesses among the crew, putting their health at risk. Additionally, leaks or faults in the tank structure may allow for external contaminants to enter the water supply inadvertently.

While open ocean exposure could introduce various contaminants, the direct impact often depends on the water treatment processes in place. Frequent water recycling can be safe when done correctly and with adequate treatment, as it typically includes filtration and disinfection processes. Poor crew hygiene practices can contribute to contamination but do not directly affect the water source as much as the condition and maintenance of storage tanks do. Therefore, focusing on maintaining and properly managing water storage tanks is crucial for ensuring safe drinking water on ships.