A Proactive Approach to Potable Water Safety Standards

Waterborne illnesses remain to pose a significant risk within maritime operations, ranging from gastrointestinal issues to severe infection and impacting thousands of seafarers annually. These health concerns not only affect crew welfare and operational efficiency but also contribute to escalating healthcare costs and logistical disruptions. 
In response to these risks, international regulatory bodies like the International Maritime Organization (IMO) and the World Health Organization (WHO) have established rigorous standards to ensure safe drinking water for seafarers. Key regulations, like the Maritime Labour Convention (MLC) 2006, mandate the provision of safe potable water aboard ships, to which non-compliance with these standards can lead to significant fines, reputational damage and operational delays, underscoring the importance of best practices in water treatment, testing, and monitoring.

Because vessels face continuous exposure to saltwater, temperature variations, and fluctuating pH levels, the common challenges that arise are: 
•    Corrosion control
Corrosion in tanks and pipelines can introduce contaminants into the water supply, threatening compliance and infrastructure integrity
•    Scale prevention 
Scale buildup in desalination and reverse osmosis systems impairs efficiency and impacts water quality
•    pH balance 
Maintaining an optimal pH balance in potable water enhances the effectiveness of disinfectants, preventing microbial growth and safeguarding water quality.

As such, a proactive multi-tiered approach to water management is paramount to maritime operators in anticipating and resolving these potential issues. Key components of a forward-thinking water management strategy include:
•    Specialized chemical treatment solutions
Standard disinfection practices may not address all issues, such as scaling, corrosion, and biofouling, which can compromise both water quality and water system performance. By implementing specialized chemical treatments to mitigate these risks, you can enhance compliance, extend equipment life, and reduce maintenance needs
•    Routine testing and real-time monitoring
Regular testing for pathogens like E. coli, Legionella, and heavy metals is necessary for early detection and prevention of health risks. Only through integrating up-to-date monitoring systems, can operators track potable water quality continuously, enabling quick responses to deviations to prevent contamination
•    Automated dosing systems for precision treatment
Automated dosing minimizes human error by maintaining accurate chemical levels, preventing both overuse and underuse. This reduces the risk of excess discharge while supporting sustainable practices in consumption and manual handling
•    Enhanced filtration at point-of-use
Water filtration removes impurities such as chlorine, disinfection byproducts and heavy metals such as mercury, lead, and arsenic. This leads to an improved drinkability of potable water for the crew and a reduction in the consumption of bottled water.
As regulatory standards evolve, a proactive approach to potable water management enables operators to safeguard against compliance risks while fostering a healthier, more resilient maritime environment. 

Partnering for a Safer Future
Wilhelmsen Ships Service offers a comprehensive range of water treatment solutions to help you achieve your water quality goals. Our experts can provide tailored recommendations, including:
•    Advanced water treatment technologies
•    Comprehensive water testing services
•    Cloud-based data logging management
•    Expert technical support
By working together, we can ensure the safety, efficiency, and sustainability of your vessel’s water systems.
For more information about Wilhelmsen Ships Service’s potable water treatment solutions, click here.