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Watermaker — Definition & Engineering Reference | ForeverPure Glossary

Watermaker

A watermaker is a compact, packaged seawater reverse-osmosis system designed for marine, yacht, or off-grid use. Capacities range from 35 GPD (small sailboats) to 5,000 GPD (commercial vessels and remote-island camps).

How It Works

Watermakers integrate a booster pump, prefilters, an HP pump (often a Cat or Danfoss APP), one or two SW30 membrane elements, and a control panel into a single skid. Power is typically 12/24 V DC or 230 V AC.

Why It Matters

Watermakers are the only practical source of potable water for vessels at sea longer than a few days and for islands or coastal sites without grid utilities.

Related Products & Resources

Frequently Asked Questions

How much power does a watermaker use?

A 200 GPD watermaker draws ~600 W at 24 VDC. A 1,000 GPD unit draws ~3 kW at 230 VAC.

How long do watermaker membranes last?

With proper pickling between uses and clean feed, 5–7 years. Continuous use with poor pretreatment can drop life to 2 years.

Can watermakers run on solar?

Yes — DC-direct solar watermakers run from PV panels without batteries during daylight. Sizes up to 2,000 GPD are commercially available.

Need Engineering Help?

ForeverPure has supplied desalination, high-pressure pumps, and energy-recovery devices to commercial and industrial customers since 2003. Contact our engineers for sizing, quotes, or technical support.

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