20-60 gph Water Makers

Are you looking for a system that can turn saltwater into freshwater? If you need a system that can generate great amounts of drinkable water while being energy efficient, this is the one for you.

The Honda EU2000i desalination system for boats can Power the 20 or 30-gallon-per-hour water maker AND charge your battery simultaneously! You can produce clean water, remove salt, and not worry about running out of charge.

Our Honda EU2000i watermakers are the perfect combination between high quality and low maintenance, improving efficiency in your entire operation. We have chosen the highest quality freshwater output watermaker system per dollar. Then, we paired it with the lowest maintenance cost reverse osmosis system with our discounted consumables. We only use industry-standard DOW FilmTec RO membranes with a replacement cost of only $285 each. 

Our desalination systems for boats include an industry-best warranty, including full liability insurance for your protection. See manual for warranty details. With the Honda EU2000i desalination system for boats, you can turn saltwater into freshwater more effortlessly than ever before. Never worry about water scarcity and water shortage with our 20-60 gph marine desalination system.


ModelFresh Water Prod.
RO Membrane
Number and Size
High Pressure Pump
Power in Amps
Boost Pump
Amps 12V DC
SM2020/480Single 40"9.3/4.88.2$4650
SM3030/720Dual 40"9.3/4.88.2$5550
SM4040/960Dual 40"13.5/9.38.2$5900
SM5053/1272Dual 40"21/10.55.2$6700
SM6060/1440Triple 40"21/10.55.2$7600
SM20-50Hz20/480Single 40"12.8/6.4 (110-220v)8.2$4850
SM30-50Hz30/720Dual 40"12.8/6.4 (110-220v)8.2$5750
SM40-50Hz38/912Dual 40"17.2/8.6 (110-220V)8.2$6100
SM50-60Hz48/1152Dual 40"20.4/10.4 (110-220v)5.2$6700
SM60-50Hz57/1368Triple 40"20.4/10/4 (110-220v)5.2$7600




The Honda EU2000i desalination system for boats features one General Pump Company triplex plunger pump. Additionally, it features a 316 stainless steel manifold, wetted parts, and solid ceramic plungers. The Honda EU2000i watermakers also have a nickel-plated crankcase for anti-corrosion mechanically that’s coupled to a 1.0Hp 120/220VAC electric motor. They are fitted with a pressure relief valve preset to 1000 PSI. Inlet and outlet fittings supplied and installed on the pump.

RO Pressure Vessel Assembly
One, two, or three filament wound fiberglass/epoxy pressure vessel (dependent upon GPH model chosen).
Two SW30-2540 Dow Filmtec Polyamide thin-film composite high salt rejection RO Membrane (The Gold Standard in RO Membranes, not a discount off-brand)
Four fiberglass clamps affixed to fiberglass mounting feet, two per pressure vessel

Pre-filter and Boost Pump Assembly
Two 10” clear filter housings with mounting brackets
One 20-micron pre-filter element
One 5-micron pre-filter element
One self-priming 12V DC variable speed Jabsco boost pump
(Also available in120VAC and 24VDC)

Valving and Cleaning Assembly
One clear filter housing with mounting bracket
One activated carbon filter element
Two 3-way valves for selecting:

  1. normal operation of inlet seawater
  2. fresh water rinse from ships tanks
  3. or pickling solution from 5-gallon bucket

Remote Control Panel
An anodized aluminum panel with the following system controls:
One hour meter (Standard)
One 0-1 GPM flow meter
One 0-1500 system pressure gauge
One 0-60 boost pressure gage
One product water selector non-blocking 3-way valve
One stainless steel pressure regulating needle valve One 12VDC boost pump electrical switch
One 120VAC high pressure pump electrical switch One boost Pump pressure gauge

Replaces standard hour meter with on-panel real-time TDS meter display ($200 adder)

30ft of green 1/2″ Polyethylene sea water tubing
30ft of blue 1/4″ Polyethylene product water tubing 40ft of red 1/4″ Polyethylene brine water tubing
10ft of Orange 3/8″ Polyethylene pickling water tubing
One cutter for the water tubing
Locking clips for all push connector fittings
Electronic copy of the Installation, Operation and Maintenance manual via USB Stick (Hard Copy available at our cost of $23)
One filter housing wrench for filter element replacement
One container of high-pressure pump oil
2.5 pounds of pickling reagent
One hand-held TDS meter for checking water quality (not included with control panel mount TDS meter)
A baggy of assorted push-to-connect fittings to aid in installation

One 3ft long 3/8″ high pressure braided stainless steel silicone covered hose for connecting the high-pressure pump outlet to the RO pressure vessel. 

One 5ft 3/8″ high pressure braided stainless steel silicon coated hose .

Longer or shorter high-pressure hoses available for an additional $10 per foot.



Watch the video to the right going over the details

Summary of What You Need to Supply
Raw water through hull and shutoff valve
Raw water sea strainer (we recommend one like this)
Electrical installation wire and breakers for the AC and DC Pumps Mounting screws and bolts for the individual system modules
Zip ties and mounting straps for securing the electrical and water lines That’s it! Everything else we provide with the with the water maker.


24VDC & 120VAC

+ $200
Upgrade from Standard 12VDC Self Priming Boost Pump

On-Panel TDS Meter

+ $200
Upgrade from on-panel System Operation Hour Meter

Valving and Cleaning Panel

Replacing the two 3-Way Valves Mounted on the Valving and Cleaning Assembly

Year Supply of Consumables

20 and 5 micron pre-filters
Pickling reagent, Activated carbon filters, High pressure pump crank case oil

Unattended Automatic Fresh Water Flushing

Energize your pressurized desalination system for boats’ pump while flushing + auto shut off

Automatic Product Water High TDS Divert

This option allows you to automatically divert your product water if it reaches a predetermined high total dissolved solids (TDS) level. The solenoid is used in conjunction with the on-panel TDS meter option. The TDS meter is adjustable to a pre-set level. This is usually 500 ppm which is the maximum drinking water contaminant level set by the World Health Organization.

To request a copy of the SeaMaker water maker manual with technical specifications
along with detailed installation and operation instructions, click the button below.

Questions? We Are Here To Help.

Email or call and talk to the owners of the Company and the Designers, Rich and Charlie, 7 Days-A-Week. If they are awake, they answer!