Drinking water testing for ships and offshore operations

Access to safe drinking water is an important part of maintaining health, hygiene and operational standards onboard ships and offshore facilities.

Water quality can be affected by the source of the water, storage conditions, distribution systems, onboard treatment processes and the condition of tanks and pipework. Regular testing provides objective data to help identify potential water quality issues and verify that drinking water meets the applicable quality requirements.

Eurofins Environment Testing offers a broad range of laboratory testing services to support drinking water quality monitoring and water management programmes for maritime and offshore operations.

Drinking water quality testing to applicable requirements

Testing programmes can be developed according to the requirements applicable to the vessel, offshore operation or quality and safety management system.

Depending on the application, testing can be performed against relevant World Health Organization (WHO), US Environmental Protection Agency (US EPA) or flag-state parameters.

Our testing capabilities cover a wide range of microbiological and chemical parameters, with advanced analysis also available through laboratories within the global Eurofins network.

Microbiological drinking water testing

Microbiological testing is an important part of assessing drinking water quality and identifying potential contamination.

Available microbiological analyses include:

• Total viable counts
• Coliform bacteria
• Escherichia coli (E. coli)
• Intestinal enterococci
• Legionella
• Pseudomonas

The appropriate microbiological testing programme depends on the water source, vessel or offshore installation, applicable requirements and purpose of monitoring.

Chemical drinking water testing

Chemical analysis provides information on the composition and quality of drinking water and can help monitor parameters associated with treatment, corrosion, mineral content and potential contamination.

Our chemical testing capabilities include parameters such as:

• Alkalinity
• pH
• Total hardness
• Calcium
• Sodium
• Iron
• Nickel
• Fluoride
• Nitrate
• Lead

Additional chemical parameters can be selected according to the applicable regulatory requirements and water management programme.

Advanced drinking water analysis

For more comprehensive water quality investigations, advanced testing can also be performed by laboratories within the global Eurofins network.

Depending on the application and laboratory capability, advanced analysis can include parameters such as:

• Pesticides
• Radon

Advanced testing can be considered where specific environmental, source-water or operational factors require additional investigation.

Why test drinking water onboard ships?

Regular drinking water testing can help marine operators:

• Monitor the quality and safety of onboard drinking water
• Identify microbiological contamination
• Monitor chemical water quality
• Verify water quality against applicable requirements
• Support onboard water management programmes
• Provide laboratory data for quality and safety management systems
• Investigate potential water quality issues
• Support the protection of crew and personnel

A risk-based testing programme can help operators identify appropriate sampling points and testing frequencies based on the vessel's water supply, storage and distribution arrangements.

Drinking water testing from source to point of use

Water quality can change as water moves through a vessel or offshore facility.

A drinking water monitoring programme may therefore consider different points within the onboard water system, including:

• Water supply or bunkering points
• Freshwater storage tanks
• Water treatment systems
• Distribution systems
• Drinking water outlets

Testing at appropriate sampling locations can help provide a more representative picture of drinking water quality throughout the system.

Water microbiology and chemistry testing

Eurofins Environment Testing combines capabilities in water microbiology and water chemistry, allowing customers to address multiple aspects of drinking water quality through laboratory analysis.

Water microbiology

Microbiological testing can help assess the presence and levels of indicator organisms and other microorganisms of concern, depending on the testing programme.

Water chemistry

Chemical analysis can help characterise water quality through measurements such as pH, alkalinity, hardness, nutrients and selected metals and other elements.

Advanced analysis

Where additional investigation is required, the Eurofins global laboratory network provides access to broader analytical capabilities, including selected organic and environmental contaminants.

Why choose Eurofins Environment Testing for offshore drinking water testing?

Eurofins Environment Testing provides laboratory testing services designed to support water quality management across maritime and offshore applications.

Key advantages include:

• Comprehensive testing scope covering microbiological and chemical parameters
• Testing aligned with applicable requirements, including relevant WHO, US EPA and flag-state parameters
• Specialised environmental laboratory expertise
• Advanced analytical capabilities for more complex water quality investigations
• Flexible testing programmes based on individual vessel and operational requirements

Who can use our offshore drinking water testing services?

Our drinking water testing services can support a range of maritime and offshore organisations, including:

• Ship owners
• Ship operators and managers
• Offshore facility operators
• Port and marine service organisations
• Maritime quality and safety teams
• Marine consultants and technical service providers

Whether you require routine monitoring or targeted investigation, testing can be tailored to the requirements of your water management programme.