Maintaining a clean and safe fresh water supply onboard is crucial for the well-being of both crew and guests. The right sterilisation system for a yacht must be carefully selected, properly maintained, and consistently monitored to prevent waterborne health risks and diseases.
In this article, Octo Marine will outline the key challenges of yacht water treatment, the best sterilisation methods, and how to ensure a safe onboard water supply.
The Challenges of Yacht Water Treatment
Yachts face unique challenges in keeping their freshwater systems free from bacteria, biofilms, and harmful pathogens such as Legionella and Pseudomonas aeruginosa. Without proper water treatment, these microorganisms can pose significant health risks.
Chlorine and Shock Treatments in Yacht Water Systems
Historically, chlorine has been used as a continuous method of sterilisation, but its effectiveness is limited. Chlorine struggles to work in water with a pH above 7.6, has an unpleasant odour, and reacts with organic material to produce trihalomethanes, which are highly carcinogenic.
Despite these drawbacks, chlorine remains useful for shock treatments. However, it is essential to neutralise the chlorine after treatment and safely dispose of the treated water.
Choosing the Right Biocide for Safe Water Treatment
For both shock treatments and continuous sterilisation, it is vital to use a registered biocide that is fit for human consumption. Using a product without a measurable residual effect makes it impossible to determine if the treatment is effective or when the water system is safe to use again. A biocide that does not allow for residual measurement is not legally registered for use in drinking water.
Avoiding Harmful Chemicals in Yacht Water Treatment
Some chemical compounds, such as Quaternary Ammonium Compounds (QACs), are commonly used for surface cleaning but are not suitable for water disinfection. Many QACs are carcinogenic and should not be used in yacht water treatment systems.
The Best Solution: Stabilised Hydrogen Peroxide
A stabilised hydrogen peroxide that is food-grade and fit for human consumption is one of the safest and most effective ways to maintain sterilisation onboard. When choosing a product, always ensure it is a registered biocide for human use.
One excellent option is Hydrasil WT 35%, which meets all safety requirements. It is a registered biocide, free from carcinogenic chemicals, and allows for residual sterilisation measurement, ensuring the highest safety standards for yacht water treatment.
Final Thoughts
Selecting the right water treatment system is essential for keeping yacht crew and guests safe from harmful bacteria and pathogens. While chlorine has its place in shock treatments, it is not suitable for continuous use. Instead, opting for a stabilised hydrogen peroxide solution such as Hydrasil WT 35% ensures effective sterilisation without the risks associated with other chemicals. Always choose registered biocides and avoid harmful substances to maintain a safe and reliable onboard water treatment system.
If you need any assistance onboard your yacht anywhere in the South of France, Spain, or Italy – get in touch with us. The team at Octo Marine are here to assist with expert advice, high-quality water treatment solutions, and ongoing support to keep your yacht’s water system safe and compliant.
Frequently Asked Questions (FAQ)
1. Why is sterilisation important for yacht water treatment?
Sterilisation ensures that the freshwater system remains free from harmful bacteria and pathogens like Legionella, protecting both crew and guests from waterborne diseases.
2. Is chlorine still a good option for yacht water treatment?
Chlorine is rarely used as a continuous treatment due to its ineffectiveness at high pH levels, strong odour, and the production of harmful by-products. However, it can be used for shock treatments if properly neutralised afterward.
3. What is the safest method of sterilisation for drinking water on a yacht?
A stabilised hydrogen peroxide solution that is food-grade and a registered biocide, like Hydrasil WT 35%, is considered the safest and most effective method for continuous sterilisation.
4. Why should Quaternary Ammonium Compounds (QACs) be avoided?
QACs are commonly used for surface cleaning but are not safe for drinking water treatment. Many are carcinogenic and should not be used in a yacht’s freshwater system.
5. How can I ensure the biocide I use is safe?
Always choose a registered biocide with measurable residual sterilisation to ensure its effectiveness and compliance with safety regulations.
6. What are the key benefits of Hydrasil WT 35%?
Hydrasil WT 35% is a food-grade, registered biocide that provides effective sterilisation without harmful chemicals. It is safe for human consumption and allows for easy measurement of sterilisation levels.
7. How often should a yacht’s water system be treated?
The frequency of water treatment depends on various factors, including usage, storage conditions, and water quality. Regular monitoring and scheduled sterilisation will help to maintain a safe and reliable water supply. You can either use our testing equipment, or we can come to you and complete a full water quality testing and analysis.
By following best practices in yacht water treatment, you can maintain a clean and safe onboard water supply, ensuring peace of mind for everyone on board.
