Watermaker & Desalination Service

A reliable watermaker transforms cruising. Anchorages that would otherwise require port calls every 10 days become open-ended. Long passages are no longer rationed. For most cruisers planning extended time at anchor, a watermaker is among the most life-changing investments.

Main brands and types

Spectra Watermakers (USA): Modular, energy-efficient, cruiser-favorite. Cape Horn, Newport, Ventura models common.
Schenker (Italy): Similar architecture, strong EU/Med presence.
Katadyn (Switzerland): Smaller systems, manual options available.
Sea Recovery / Horizon: Higher output, more typical on larger yachts.
FCI Watermakers: US-made, full size range.

What it costs

Item	Common range (USD)	Notes
Mid-range watermaker (Spectra Cape Horn or similar)	$4,500–9,000	15–30 GPH
High-output watermaker	$8,000–15,000	40–80 GPH
Manual watermaker (emergency)	$1,800–3,500	Katadyn Survivor
Installation labour	$1,500–3,500	40-foot boat
Through-hull + plumbing	$500–1,200	If new install
Membrane replacement	$600–1,500	Every 5–10 years
Annual service kit	$150–350	Filters, pickling

Maintenance

Daily use: Run regularly to keep membrane wet.
Storage / layup: Pickle with biocide. Critical — dry membrane is dead membrane.
Filter changes: Primary every 50–100 hours. Carbon less often.
Annual: Full service kit, check high-pressure hoses, inspect pump.
Every 5–10 years: Membrane replacement.

Frequently asked questions

Which brand?

Spectra (cruiser favourite), Schenker (EU), Katadyn (small/manual), Sea Recovery (high output).

Size?

1.5–2x daily need. Most cruisers 15–30 GPH.

Install cost?

Hardware $4,500–9,000. Labour $1,500–3,500.

Membrane life?

5–10 years with proper care. Replacement $600–1,500.

Service?

Spectra and Schenker have global networks. Major hubs have trained technicians.