Before you start
Gather the appropriate supplies and review the specific equipment manual.
- Watermaker quality readings
- Tank and plumbing diagram
- Potable-water test supplies
Step-by-step instructions
Stop using questionable water
Keep suspect water out of drinking supplies and use a safe independent water source until the issue is understood.
Check whether the issue is new
Compare tap water, recently produced water and historical quality readings using suitable instruments.
Review diversion settings
Confirm that startup product water is not being routed into the tank before water-quality readings stabilize.
Assess tank contamination
Residual saltwater, incorrect hose routing, tank fill mistakes or incomplete flushing may affect stored freshwater independently of membrane performance.
Arrange proper testing and correction
Follow potable-water and membrane-maker procedures before recommissioning the system for drinking.
Safety note
Do not rely on taste alone to judge water safety. High salinity and microbial contamination require different testing and responses.
Key takeaway
Testing the produced water and the stored tank separately helps locate the source.
Keep this job on your maintenance schedule
Save the topic as a maintenance task, choose a due date or engine-hour target, and record future service. Free and stored on your device.
Add to my maintenance plannerThis guide is for general education. Follow your equipment manufacturer’s instructions, current navigation guidance and applicable marine safety standards. When uncertain, use a qualified marine professional.