Baja Ha-Ha & MexicoCruising south with the Baja Ha-Ha fleet? Book your San Diego pre-departure watermaker inspection.View checklist →
Cruising Prep

Mexico Cruising & Baja Departure Watermaker Checklist

San Diego is the last easy place to fix a watermaker before you head south. Once you're in Baja, membranes, pump parts, and seal kits can take weeks to import and arrive with heavy duties. This checklist covers what to verify, what to carry, and what to have serviced before you cast off.

Why watermaker failure hits harder south of the border

Remote anchorages in the Pacific Baja coast and the Sea of Cortez have no potable water dock. Jug-hauling from a panga or a distant town burns days of cruising time. Parts shipped into Mexico clear customs slowly, and a shipment of membranes or a high-pressure pump can be tied up for two to three weeks plus import fees — often longer than the leg you planned to sail.

Pre-departure system check (do this in San Diego)

  • Run the system under load and verify it reaches normal operating pressure and holds it
  • Measure product-water TDS at temperature — climbing salinity before departure will only get worse
  • Check feed-pump flow and look for air leaks on the suction side
  • Inspect high-pressure pump for oil level, seal weep, and unusual noise or vibration
  • Check the age and history of the membrane — unknown or 5+ years is a gamble on a long cruise
  • Verify the through-hull, strainer, and seacock are clean and serviceable
  • Confirm the control board, pressure switch, and salinity probe read accurately

Spares kit to carry south

  • Pre-filters: several sets of 5-micron and 20-micron elements
  • Carbon block for fresh-water flushing, if your system uses one
  • High-pressure pump oil and a spare seal / valve kit for your model
  • Pickling chemical (sodium metabisulfite) and membrane cleaners for alkaline and acid cleaning
  • Spare O-rings for pressure vessel end caps and filter housings
  • A handheld TDS meter so you can trust your readings independent of the panel
  • The service manual and part numbers for your exact model, stored offline

Layup and pickling on the hook

If you'll sit at anchor for more than a week without running the unit, pickle it rather than letting it sit wet. Warm water accelerates biological growth, and a fouled membrane in Bahía Santa María is a much bigger problem than a fouled membrane on Shelter Island. Know the procedure for your system before you leave, and carry enough chemical for at least two cycles.

Dockside pre-departure service in San Diego

We do inspection, pressure and salinity testing under load, membrane replacement, pump service, and pickling at the dock across Shelter Island, Harbor Island, Point Loma, Mission Bay, and Chula Vista. If you're staging for a departure date, tell us the date and we'll work backward from it so parts arrive in time.

  • · Pressure and salinity testing under load
  • · Membrane replacement before departure
  • · High-pressure pump service and seal kits
  • · Pre-filter and spares kit sourcing
  • · Pickling and layup guidance
  • · Dockside service across San Diego marinas

Book a Pre-Departure Inspection

Tell us your boat, your system, and your departure date. We'll work backward from it so you leave San Diego with a watermaker you can trust.

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