Seawater Desalination Guide | Sea Water | Well Water Desalination | Brackish Water Systems | 


Turn sea water in to fresh potable usable drinking water
Residential & Commercial Sea Water Desalination Systems

Note: These RainDance Water systems are designed for sea salt water purification - if you have brackish salty well water please contact us at: Or Click Here to Review our Brackish Reverse Osmosis Systems


We Provide Easy To Use Sea Water Desalination & Brackish Well Water Filtration Systems Designed For Residential and Commercial Drinking Water Systems. Engineered Salt Water Filters From 750 Gallons Per Day To 4,000 Gallon Per Day Suitable For Whole-House Water Systems, Irrigation, Island Resorts, Hotels, Motels, Vacation Homes, Emergency Drinking Water Systems, Camps, Lodges, Designed for Sea Water, Salt Water, Sodium & Chloride Filtration, Brackish Well Water, Salty Borehole Water Treatment - Ideal for Back Up Sea Water Source Filtration.

There are significant differences in the equipment used for removing most of the dissolved solids from seawater and from most surface or well waters. Seawater units are referred to as desalinators and surface/well water units are called reverse osmosis (RO) units. The laws of physics require approximately 1 psi driving force for each 100 mg/l of solids dissolved in the water to be treated. Seawater has about 35,000 mg/l of dissolved solids so to obtain the first drop of permeate water a pressure of 350 psi is required. Reverse osmosis units on the other hand normally treat water where the dissolved solids content is in the area of 6,000 mg/l or less. The required pressure for that first drop of water for 6,000 mg/l is 60 psi. To insure an adequate flow of water from the respective devices seawater units usually operate in the area of 1,000 psi and RO units in a range of 150 to 250 psi. This additional pressure requirement for seawater increases the required strength of almost all components and requires much larger pumps. Also, seawater is extremely corrosive so the materials of construction for seawater units must be non-corrosive. All of these differences cause the cost of seawater units to be much higher than the cost of an equivalent gallon output RO unit.  

Successfully Treating Seawater Throughout The US & Worldwide
 California - Florida - Texas  Singapore - Oman - Belize
 Bahamas - Virgin Islands - Hawaii

Sea Water Desalination Filters

APPLICATIONS: Seawater Desalination - Salt Water Intrusion Treatment - Drinking Water - Brackish River Water Filtration 

Our sea water reverse osmosis systems are designed for commercial and whole house residential applications where floor space is at a premium. All major system elements are mounted within a sturdy tubular stainless steel frame, welded for long term rigidity and open for easy access to all components. The user-friendly TV-SWRO desalination system is fully equipped with the instruments and controls needed for reliable long term operation.

Superior Customer Support During Office Hours & After Hours! Our Online Live Chat is available from 5am to 10pm PST - Monday - Sunday 7 days a week - Emails are also answered 7 days a week 365 days a year or if you prefer to call, (1-877-788-8387) our office hours are from 9am-5pm PST Monday-Friday.

750gpd seawater filterskid mount seawater desalination

RainDance Sea Water Desalination: Vertical Floor Standing & Skid Mount Options

750gpd - 1500gpd - 2500gpd - 4000gpd Whole House & Commercial Seawater Filters

Model: TV-SWRO-750 Premium Compact Desalination System

TV-SWRO-750 Systems Include The Following Premium Features:
Stainless steel frame, structural ABS control panel

316 SS High pressure pump with safety relief valve
Fiber reinforced 1000 PSI pressure vessels
20" Prefilter for 2.5"x20" sediment cartridge
Easy Quick connect brine and product connections
Prefilter in & out and membrane vessel in & out
pressure gauges
Product water flow meter
Brine flow meter
High Pressure control SS needle valve
Panel mounted digital TDS product water quality monitor

Portable Superior Water Quality Monitoring: Allows you to easily test your water before and after the TV-SWRO-750. Portable waterproof tester offers high accuracy electrical conductivity (EC), total dissolved solids (TDS) and temperature measurements in a single tester!
Low energy, thin film sea water membrane elements
Microprocessor system controller
Automatic product water membrane flush -
Clean water flushes the membrane upon start-up

Power: 220v, 60 hz, 1 phase (1800 watts / 10 amps) - Motor Draws approximately 1.8 KW
Aprox. Dimensions: 22"W x 26"D x 49"H
Approx. Weight: 210 lbs.
Output*: 750 GPD
Membrane: 1 each Low energy, high rejection
4040 thin film sea water type
Dissolved Solids Rejection: 98%

Recovery: 20% - 25%
*Prefilter: 10 micron sediment/debris pretreatment
Connections: Feed - 3/4" FPT, product and brine - 1/2" quick connect tube
System Control: Microprocessor control by product tank level and feed pressure. Also provides product TDS monitoring.
Salinity Monitoring: Automatic electronic monitoring. Temperature compensated with the digital continuous readout. The salinity monitoring components of the system provide TDS readout in ppm (parts per million) of product water.
Salinity Range: Designed for seawater use up to 50,000PPM TDS (NaCl) (typical seawater salinity is 35,000 ppm)
Temperature Range: Max. 113oF / 45oC, Min. 33oF / .5oC
System Operating Pressure (sea water): Nominal 750 psi / 51 bar
Reverse Osmosis Membrane: High Rejection/Low Energy, thin film composite, spiral wound, single pass element.
Automatic Membrane Flush: Premium Feature - Membranes flushed with clean product water for 5 min. after every shutdown
pH Range: 3-11 (typical seawater pH is 8)
Operating Parameters: TDS-50000ppm, Total iron is less than .2ppm, Manganese is less than .04ppm, Water hardness below 10gpg. Chlorine Tolerance: 0.1 PPM Excessive foulants such as turbidity and bio matter must be removed prior to the system. * Production rate is based on input water temperature of 25 C (77 F). If your water is colder production will be lower.

Note: Our TV-SWRO-750 includes a sediment & debris pre-filter cartridge which protects the sea water system form excessive sediment, dirt and debris.

Quick Guide: How Our Whole House/Commercial Seawater Desalination Systems Work: You will need to supply pressurized seawater to the attached sediment/sand prefilter cartridge system - then this "pre-filtered" water enters the seawater RO membrane water purification system - this "RO Desalinated Water" then enters and begins to fill the near-by storage tank - The Desalinated Water will continue to fill the Storage Tank until the tank float switch closes and shuts the entire system off.  When there is a demand for water the re-pressure delivery pump is activated and draws "Desalinated Water" from the Storage Tank to your taps. If enough filtered water is used to the point where the float switch is reopened, the Desalination System is automatically reactivated and begins to replace the product water that has been depleted.

Once installed - the purified water produced by the seawater desalination system comes out as a small stream, which is why you need a separate storage tank (at least 300 gallons storage or more) and a re-pressure pump to deliver the filtered water into your home or business. Note: We can also quote our compatible storage tanks and repressure pumps upon request.  


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RainDance Sea Water Desalination: Vertical Floor Standing & Skid Mount Options

750gpd - 1500gpd - 2500gpd - 4000gpd Whole House & Commercial Seawater Filters

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    RainDance Water Systems can assist you in all of your sea water treatment needs. There's no need to go anywhere else. With over 100 years of combined experience in the water treatment business our support team can quickly & accurately answer all of your water filtration questions. Our resources include engineers and water treatment professionals which utilize virtually all known water treatment processes assuring our customers of the most economical, dependable, and environmentally friendly solutions. Our water treatment systems range from domestic residential households, large commercial / industrial operations to membrane cleaners and water treatment chemicals.

    Our customers include numerous residential households on well and city water sources, commercial applications, business facilities and farms throughout the United States, Venezuela, Spain, Africa, Canada, Japan, U.K., Bahamas, Cayman Islands, Indonesia, Taiwan, Singapore, Kabul, Afghanistan, and Malaysia.  

    A small sample of our customer base includes: The U.S. Army, The U.S. Environmental Protection Agency (EPA), The U.S. Fish and Wildlife Federation, The United States Coast Guard, Washington St. National Park Service, San Diego State University, Arizona State University, Palomar College, Golden Eagle Thoroughbred Horse Farm, Buckridge Plantation and Stables, Advanced Marine PTE., Quinlan Texas Elementary School, Fairbanks Farms, Hunter Industries, Sonance Corp., Owens Brigam Medical, 1st Choice GMAC Realty, Century 21 Realty, Coldwell Banker Realty, Austin Productions, Fairfield Country Club, and Auer Precision Inc. Just to name a few.  

    Shipping and Exporting is our specialty. To ensure a safe and proper delivery for your sea water treatment equipment we offer export crating and packaging for all overseas orders. We can use your freight forwarder, ship freight collect or we can find the best shipping rates from our facility. For our domestic U.S. orders we offer crating or pallet packaging for a safe easy delivery.

    Commercial & Residential Seawater Desalination Systems

    Turn sea water in to fresh potable usable water with our sea water desalination systems. We offer portable, land based, and complete skid mount sea water purification systems. 

    Residential & Commercial Desalination Water Selection Guide:

    Order online 24 hours a day 7 days a week or call toll free 1-877-788-8387 Free shipping on most residential water treatment within the Continental US.

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