Welcome to SeaWater Pro

+1-602-751-6414 Visit our showroom in Fort Lauderdale and soon in Miami Florida.

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Plug and Play Marine watermaker

This video describes what is included in the kit. Happy buyer guarantee !

If you are not completely satisfied with the unit return for a full refund ! NO QUESTIONS ASKED !

Residential Desalinator - watermaker

 SeaWaterPro Residential Desalinator Watermaker, plug and play, fully assembled units. 

 Available at 12, 24, 48 volts DC as well as 115 / 230 Volts AC single phase or 3 phase. 

Call for details, we custom make units to meet your requirements for a fraction of what others charge.

optional equipment

Included in the $1595 price.

As seen in the video. Air-Cooled Karcher K2 high pressure pump. The base unit has only $89 replacement cost and a 2 year factory warranty from Amazon.  This is perfect for the casual user. Draws about 900 watts at 800 psi and will run with a Honda EU2000i (1600 watt) generator. This pump will not support a second membrane.

Optional Quiet Water-cooled Pump (+$100)

This is a Karcher K4 pump. I highly recommend this $100 upgrade. It is super quiet and will run in confined hot engine rooms. This unit is so quiet you will not hear anything outside the engine room. It will run continuously for any length of time without overheating. It will also support 2 membranes and will produce 30 gallons per hour. Draws about 1000 watts at 800 psi and will run with a Honda EU2000i (1600 watt) generator. One common water inlet cools the motor, no additional lines required.

Optional Second Membrane with hoses (+$599)

The second membrane will increase your production between 30 and 40 gallons per hour. When used with the water-cooled K4 it will produce 30 GPH. If you choose the stainless pump with the 2.5 HP motor you will get 40 GPH.

Remote Panel-Mountable Adjustment hose and fittings.

This option includes panel mountable pressure gauge, 3000 psi hose cut to any length you desire and all stainless fittings required. Total cost is $100 plus $10 / foot  of hose. Specify if you need 90 degree elbow fittings at either hose end.

Stainless Pump and 1 HP Stainless steel Motor Dual Voltage (115 -230 volts) BOTH for $999.00 !!

You asked for it - You got it !!

Take advantage of this price, you will not find it anywhere !!

*Machined super thick ceramic plungers.

*100% 316L Stainless steel bolts.

*Anticorrosive coated aluminum casing.

*Forged and heat treated crankshaft.

*Conical ball bearings for quiet and lower crankcase temperatures.

*316 stainless valve seat and valve stem.

*Triple oil seal for durability.

*Stainless steel connecting rods.

*Stainless Blow-off safety valve.

Motor Specs.


  • - High quality powerful Marine Motor splash proof seals.
  • - 56C face direct mounting
  • - Easy wiring access
  • - UL Listed and meet any Nema Standard and CE for Europe exports.

1HP/1000watts. 1725RPM . SF 1.15 . 56C Frame . TEFC . 115/230V 

Product Size: 13”x10”x10” G.W: 27 lb  pump model EWM1615C

Click to See Pump Brochure / model EWM2415C

Dow filmtec SW30-2540 membrane +$39.00

The membrane included in the kit is made by Toray South Korea and works great. If you prefer Dow filmtec made in USA add $39.00 to the kit price. Please let me know if you want the membrane pre-installed or left in the sealed vacuum bag for you to install at a later date. I have not measured any performance or longevity difference between the 2 membranes, the choice is yours.

Download stainless pump specs/brochure

EWM Series-General Pumps Brochure (pdf)


About Us

Quality Components

We own the machinery and make most parts in house with 20 years in the machining business. The RO system is entirely built out of stainless, brass and plastic parts.

Non Proprietary Parts

All components including filters and membrane can be found at your local hardware store on any on-line outlet.

Complete System 21-GPH for $1595 US !!!

At 21 Gallons (80 liters) per hour only $1595, we have NOT found a more competitive pricing anywhere. If you do please let us know. UPS ground 3-5 day shipping anywhere in the US including territories $99.00.  Permeate flows for individual membranes may vary +/-20% due to temperature and other factors. 

Get off the grid

The average sailing vessel runs out of water way before it runs out of fuel. In the Bahamas you will pay 35 cents / gallon for the precious liquid yet almost 75% of our planet is covered with it.

Once you own a watermaker there is no going back, it is a game changer. You no longer have to plan your trips around water.

Shower all you want, wash your boat deck and drink chemical free water with less dissolved solids than tap water. 

The system can operate on a Honda EU2000i portable generator and spare enough power to charge your batteries at the same time. Using a small Honda generator you will make ~110 gallons of water with 1 gallon of gas.

It will also run from a 12 volt battery using a DC power inverter.

Now can be enjoyed not only by the Mega-yacht crowd, but by the average cruiser.

The system is 100% assembled with non proprietary "off the shelf parts" making maintenance a breeze.

The system is assembled in Fort Lauderdale Florida and you may call anytime with questions.

The cost is 50% less than the competition due to our manufacturing abilities therefore bypassing the middleman on some components. Shop around, nobody can beat our price. Read testimonials about what existing owners have to say about our watermaker kit.  

Registration / Order form

If you would like to place an order or request a quote please specify the options and I will email you a secure link. You may pay by credit card or PayPal. For questions please submit the form below or call. My Cell Phone is +1-602-751-6414. Same number is also available on WhatsApp or Viber. You may also email: seawaterprollc@gmail.com

SeaWater Pro LLC

1314 SW 1st Ave
Fort Lauderdale, FL 33315

Hours -By appointment

Call +1-602-751-6414 anytime for support

Frequenly Asked Questions

How many watts is the priming pump ?

The priming pump draws less than 100 watts. I have a 20 psi 12 volt priming pump included with the kit and an optional 5 psi at 120 volts magnetic submersible for an aditional $124.

How many watts is the high pressure pump ?

The Karcher pump draws about 900 watts, the watercooled karcher about 1000 watts at 800 psi. The watercooled option adds another $100 to the kit price. Check it out here.  http://a.co/9ER4KkF

Where should I install the membrane ?

The membrane can be mounted horizontal or vertical. Regardless which brand watermaker you decide to purchase, due to the organic nature of all membranes they cannot be installed next to a hot engine. Also, the air-cooled pumps may overheat if operated in a hot engine room. The only pump that can handle heat is the watercooled Karcher model K 3.540, which I offer as an option with the kit for another $100. Check out the watercooled pump here.  http://a.co/9ER4KkF 

What skills and tools are required to assemble the kit ?

This is not rocket science.

You will need to add teflon tape to the plastic threaded fittings and some very basic tools. Some fittings already have teflon tape, however, they may still need to be tightened. Every installation is unique therefore be prepared to turn a wrench. 

How can I upgrade to a stainless pump ?

You can always upgrade to a stainless pump because the rest of the system is the same. If for some reason you don't like your Karcher pump simply remove it and connect a stainless pump.

What are the shipping charges ?

It takes about 5 days to prep your kit for shipment, then UPS or Priority mail 3 to 5 days anywhere in the US including territories for $119.00. International Orders vary depending on your country. 

How long does the membrane last ?

It is recommended that you clean your reverse osmosis membrane as needed or once every two years (on average). The reverse osmosis (R.O.) membranes last an average of five years and with proper operation and care can last up to 10 years. Permeate flows for individual membranes may vary +/-20% due to temperature and other factors.

How long will the Karcher pump last ?

Nothing lasts forever in salt water, even the best stainless pump one day will fail. A $1500 stainless pump should last about 5 years or more, if you do the math, that is $25 /month.

The aircooled Karcher K2, is a bit more noisy but it costs $89 and should last 1 year with average use, that is $7.41 / month.

The super quiet watercooled Karcher K4 should last 2 or more years, at $199 it will cost you $8.29 /month. 

The Karcher advantage is the low replacement cost, the 2 year factory warranty and the fact that you can find them anywhere. 

How much is a replacement membrane ?

Watermaker membranes typically last 5 to 10 years.

Being that we use standard size membranes they cost 5 times less than custom proprietary sizes. We offer 40 inch replacement membranes for $195.00 plus shipping. You may search for SW30-2540 online and compare prices, we have the lowest price membranes on Amazon.

How long do the pre-filters last ?

Depends on the water quality, from a few days to a few months.

If you notice a pressure drop on the primer pump pressure gauge then it is time to replace your filters or rinse them. Also, if they look green or black or some other non appetizing color then consider the same.

Where do I find pre-filters ?

Ideally you need a 20 micron and a 5 micron. You may purchase them online for about $5 / each. In an emergency use anything available at your nearest hardware store and don't worry about microns. We used 10 inch filters because it is  the most common size.

  Pleated Sediment Water Filter Cartridge 10"x2.5" Standard Size 


Tier1 S1 20 Micron 10 x 2.5 Pleated Cellulose Sediment Pentek Comparable Replacement Water Filter 12 Pack 



The $1595 plus shipping price is available when you buy direct by calling or register above and save $100.

Ebay is another great place to purchase a watermaker after auction fees and buyer protection the price is $1695.00 plus shipping.