INDEPENDENT WATER INTELLIGENCEActivated Carbon: Adsorption, Chlorine Removal and Breakthrough
Understand what GAC and carbon block do, why EBCT matters and why carbon needs a hygiene plan.
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Marine Water Knowledge Base
A technical reference on water treatment, disinfection, materials, biofilm, corrosion and the control of vessel drinking-water systems.
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Browse marine treatment technology, water chemistry, biofilm, corrosion and operational controls. Every guide explains how the process works, its benefits, limitations and what to monitor on board.
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Activated Carbon: Taste Breakthrough or Residual Loss
Carbon adsorption can improve taste but also remove disinfectant residual and eventually lose capacity.
Preview article →Biofilm in Yacht Water Systems: Formation, Persistence and Control
Biofilm is a surface-associated microbial community, not simply bacteria floating in a water sample.
Preview article →Biofilm or Slime Returns After Cleaning
Recurring slime may indicate persistent water age, nutrients or poorly treated internal surfaces.
Preview article →Blue or Green Water at a Tap
Blue/green staining or coloured water can point to copper corrosion, but backflow or other contamination must also be excluded.
Preview article →Brown, Black or Orange Water
Discoloured water may contain iron/manganese deposits, corrosion products or disturbed tank sediment.
Preview article →Calcium Carbonate Scaling and the Langelier Saturation Index
Interpret LSI as a CaCO₃ saturation indicator—not as a verdict on drinking-water safety or all corrosion.
Preview article →Chlorine Disinfection: Free Chlorine, pH and Residual
Understand hypochlorous acid, contact time, chlorine demand and why free and total chlorine differ.
Preview article →Copper–Silver Ionisation: Distribution-System Control
Copper–silver ionisation is a specialised technology requiring controlled residuals and material compatibility.
Preview article →Designing a Risk-Based Sampling Plan
Choose meaningful sample locations, methods and response actions.
Preview article →Distribution Hygiene, Stagnation & Biofilm
Recognise and control risks in low-use outlets, hot-water systems and complex pipework.
Preview article →Earthy, Musty or Stale Water
Persistent musty smells may be associated with source-water compounds, aged water, carbon filter condition or microbial growth.
Preview article →Filters Block Too Quickly
Frequent cartridge changes are a symptom; the source of solids and hydraulic conditions must be identified.
Preview article →Freshwater Tanks: Inspection, Hygiene & Integrity
Inspect the barriers that protect stored drinking water against intrusion and stagnation.
Preview article →Fuel, Solvent or Chemical Taste/Odour
A fuel-like or solvent-like odour is a potential contamination event requiring immediate escalation.
Preview article →Galvanic Corrosion at Mixed-Metal Connections
Dissimilar metals electrically connected in a conductive electrolyte may accelerate attack on the less noble material.
Preview article →Galvanic Corrosion: Dissimilar Metals, Voltage and Electrolyte
Why an electrically connected metal couple in conductive water can accelerate loss of the less noble metal.
Preview article →How to Build Your Yacht Water Safety Plan
Combine the Academy courses with a vessel-specific assessment and independent review.
Preview article →Hydrogen Peroxide Without Silver: What Changes?
Compare non-silver H₂O₂ with silver-stabilised products without assuming identical authorisations or field performance.
Preview article →Hygienic Water Bunkering & Source Acceptance
Verify shore supply, transfer equipment and water quality before filling tanks.
Preview article →Ion Exchange Softening: Hardness, Sodium and Regeneration
Softening removes calcium and magnesium hardness but does not automatically create chemically stable water.
Preview article →Low Pressure or Uneven Flow at Outlets
Low pressure can be mechanical, hydraulic or caused by fouling, and should not be misdiagnosed as low-water quality.
Preview article →Mapping the Vessel Water System
Build a reliable, up-to-date picture of every water source, barrier, tank and outlet.
Preview article →Metallic Taste or Coloured Staining
Metallic taste can reflect pipe materials, stagnation or changing water chemistry; taste does not identify a specific metal.
Preview article →Microbiologically Influenced Corrosion (MIC): When Biofilm Affects Metal
Microorganisms can accelerate local corrosion, but detecting bacteria alone does not prove MIC.
Preview article →Milky or Cloudy Water
White cloudiness can be entrained air, calcium-carbonate particles or other suspended matter.
Preview article →MLC 2006, Vessel Rules & Flag-State Applicability
Keep legal applicability as a verified vessel-specific register, not a guessed universal checklist.
Preview article →Monitoring, Trend Review & Crew Records
Turn individual readings into a defensible routine water-quality record.
Preview article →Ozone Disinfection: Strong Oxidation Without a Lasting Residual
Ozone is an effective onsite oxidant but requires careful design and by-product management.
Preview article →Ozone Disinfection: Strong Oxidation Without a Lasting Residual
Ozone is an effective onsite oxidant but requires careful design and by-product management.
Preview article →Pinhole Leaks or Pitting in Stainless Steel
Stainless steel can pit or suffer crevice corrosion in chloride-containing, stagnant or poorly designed environments.
Preview article →Pool & Spa Water: Daily Risk Controls
High-temperature and aerosol-generating water systems need dedicated management.
Preview article →Pool/Spa: Cloudy Water or Unstable Disinfectant
A cloudy spa or pool can reflect filtration, bather loading, water chemistry or insufficient disinfection.
Preview article →Rapid Metal Damage: Stray Current or Galvanic?
Unexpected rapid metal loss can involve electrical leakage but not every corrosion defect is stray-current corrosion.
Preview article →Remineralisation: Rebuilding Alkalinity and Calcium Balance
Low-TDS RO water needs a deliberate chemical stability assessment, not just a target pH.
Preview article →Repeated Microbiological Positives
Recurring positive laboratory findings call for investigation of the whole source-to-outlet system.
Preview article →Responding to Suspected Drinking-Water Contamination
Prepare decisions, communications and evidence before an incident occurs.
Preview article →Reverse Osmosis and Nanofiltration: Salt and Contaminant Separation
Understand permeate, concentrate, salt rejection and why mineral balance matters after RO.
Preview article →Reverse Osmosis Watermaker: Safe Monitoring
Keep seawater-to-product-water operation under controlled monitoring.
Preview article →Rising Watermaker Permeate TDS
Increased RO product conductivity can signal changing source conditions or membrane/system problems.
Preview article →Rotten-Egg or Sulfur-like Odour
A sulfide-like smell may arise from the source, a heater, microbial activity or a local drain.
Preview article →Sediment Filtration: Microns, Differential Pressure and Limits
Particle filters protect equipment; micron rating is not a microbiological safety certificate.
Preview article →Silver Ionisation: Mechanism, Constraints and Monitoring
Silver ions may have antimicrobial activity, but stand-alone drinking-water disinfection claims require caution.
Preview article →Silver-Stabilised Hydrogen Peroxide: Oxidation and Residual Management
Separate the oxidising action of H₂O₂ from the chemistry and regulatory implications of a silver stabiliser.
Preview article →Stainless Steel Pitting and Crevice Corrosion
Stainless steel relies on a passive film; it is not immune to chloride-driven local corrosion.
Preview article →Stray-Current Corrosion vs Galvanic Corrosion
Learn why unintended electrical leakage is a different failure mechanism from normal galvanic coupling.
Preview article →The Multi-Barrier Yacht Drinking-Water System
No single filter or disinfectant addresses every microbiological and chemical hazard on board.
Preview article →Ultrafiltration: A Physical Microbial Barrier
UF can provide a validated physical removal barrier for particles and many microbes, but does not desalinate.
Preview article →Understanding Treatment Barriers
Compare filters, RO, UV and chemical dosing without assuming they are interchangeable.
Preview article →Unexpectedly Low Free-Chlorine Residual
A low measured disinfectant residual can reflect consumption, a faulty reading or treatment removal.
Preview article →UV-C Alarm or Low Reactor Intensity
A glowing lamp is not proof of adequate UV dose; alarms require verified response.
Preview article →UV-C Disinfection: How It Works and What It Cannot Do
UV-C can inactivate microorganisms at the reactor but provides no downstream disinfectant residual.
Preview article →White Scale in Hot-Water Equipment
White deposits and declining heating efficiency can indicate calcium-carbonate scale formation.
Preview article →Knowledge materials are educational and do not replace vessel-specific procedures, competent review or applicable authority requirements.