Sea Water Desalination from RainDance Water Systems

Turn sea water into fresh, potable, and usable drinking water!
Residential & Commercial Sea Water Desalination Systems

Note: These RainDance Water systems are designed for sea salt water purification with brackish water up to 50,000ppm - if you have brackish salty well water please contact us at: Or Click Here to Review our Brackish Reverse Osmosis Systems For Well Water 

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 1,500 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


Seawater Desalination - Salt Water Intrusion Treatment - Sea Water To Drinking Water 

Our sea water reverse osmosis systems are designed for commercial and 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.

- Stainless Steel Frame, Vessels, Gauges, Hardware
- Structural ABS Control Panel
- 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)
- Automatic Membrane Flush: Premium Feature - Membranes flushed with clean product water for 5 min. after every shutdown

The RainDance Complete 1500gpd Seawater Desalination Equipment Package

Produces up to 1500 gallons per day - Built for Residential Whole House, Docks, Seaside Cottages, and Light Commercial Sea Water Desalination Applications

RainDance TV-SWRO-1500 Seawater Purification Package
Special Package Price: $19,995.00

To Order Or Request Additional Information
 Call 1-877-788-8387 Or Email: 

Model # RainDance TV-SWRO-1500 Seawater RO Package
System Function Light Commercial or Whole House Seawater Purification System W/ Support Equipment Package
Capacity Up To 1,500 Gallons Per Day
Power 220V 60Hz (3 Phase)
Maximum Removal Capacities 50,000ppm TDS
< 1ppm Iron
< 0.8ppm Manganese
< 100gpg (1,710 mg/L)) Hardness
Chlorine Tolerance 0.1ppm
Applications Engineered for whole house & light commercial seawater desalination drinking water applications
Package Includes Separate:
 Automatic Antiscalant Pretreatment
A must for any seawater desalination system! The antiscalant feed system protects the ro membrane from excessive silica, hard water and other minerals that can cause the membrane to foul and plug prematurely.  
Package Includes Seperate:
 Automatic Backwashing Prefilter
Our automatic backwashing prefilter protects the RO membrane from excessive sand, sediment, turbidity, iron, manganese and debris
Attached Prefilter Attached Carbon Filter - This prefilter protects the RO purifying membrane by removing chlorine, pesticides, Insecticides, herbicides, THMs and organic chemicals
Package Includes Separate:
500 Gallon Storage Tank
The purified water comes out as a small stream, which is why you have to have a storage tank and repressure pump to collect and deliver your purified water to your taps. 
Package Includes Separate:
Storage Tank Delivery Pump
Draws pressurized water out of the storage tank to your taps 
Package Includes Separate:
Post UV Disinfection
Disinfects water in storage tank
RainDance Exclusive
Seawater RO Package Accessories
RO Water Gallons Used Totalizer Monitor
Pre-loaded Flash Drive w/ Instructions, Diagrams, Manuals
Access To Unmatched 24/7 Support
Customer & Tech Support Via Phone: 9am-5pm PST Mon-Fri
Via Live Chat: 5am-10pm PST 365 Days A Year
Via Email: 24/7 365 Days a Year

Our Top Selling Seawater Purification Package: RainDance TV-SWRO-1500 Package
Light Commercial or Whole House Seawater Treatment Package Premium Features & Specifications

Customized Pretreatment System - Automatic self-backwashing media filter is designed to treat specific fouling contaminants to protect the RO membranes. This system is considered maintenance-free as there are no routine filters to replace - designed to prefilter sediment, sand, turbidity, iron and manganese. Dimensions: 10" diameter x 63" height / Power: 220v 60 hz

100% Proven Salt-Free Hard Water Pre-Treatment - Antiscalant Injection System - 100% proven salt-free hard water pre-treatment to protect and prolong the life of RO membranes by reduction of scaling and fouling effects from hard water & silica. Antiscalant injection method is preferable to brine regenerating softeners as it is lower maintenance and more economical. The antiscalant formulation has been certified by the National Sanitation Foundation (NSF) under ANSI/NSF Standard 60 for use in producing potable water.
        • Injector valve assembly
        • 15 gallon solution tank with injection pump - 16”W x 16”D x 28”H
        • Power: 220v, 60hz
        • *RainDance Water Systems will include a 5 gallon pail of antiscalant with your order.

1500gpd Seawater Reverse Osmosis Purification System Features:

Power: 220v 60hz (3) Phase

Connections: Feed / Drain / Product - 3/4" FPT / 1/2" QC / 1/2" QC

TV-Seawater RO series is designed for applications where floor space is at a premium. All major system elements are mounted within a sturdy Tubular Stainless Steel Frame - NOT ALUMINUM, welded for long term rigidity and open for easy access to all components. TV systems are fully equipped with the instruments and controls needed for reliable long term operation.

Structural ABS control panel 

On / Off Switch

Float Switch For 500 Gallon Atmospheric Tank (Tank Included With Package)

20" Pretreatment Filter: Chlorine, Organic Chemical Removal

Quick connect drain and product connections

Feed and membrane vessel pressure gauges

Product water flow meter

Brine and recirculation flow meters with integral needle valves

Low pressure cut off

High pressure switch

Patented PureFlush Feature - Flushes the RO membrane(s) with clean water on shut down/start up.

(2) specialty seawater membrane element(s)

Microprocessor-based Controller: Monitors several functional conditions and regulates operation of the high pressure pump and control valves. The controller is connected to sensors which, depending on their state, allow the cyclic production of purified water or prevent operation due to abnormal conditions. The standard configuration of the controller monitors feed water supply pressure for minimum level, product water storage tank level for system start/stop conditions and product water conductivity for maximum set point value and for digital front panel display. Additional optional parameters that the controller is capable of monitoring include main pump high pressure set point, low feed water tank level and membrane flush cycle occurrence and duration. Front panel buttons and digital display allow operator adjustment of set points and flush parameters. 

Operating Parameters: Max TDS-50,000ppm; Total iron is less than 1ppm; Manganese is less than 0.8ppm; Water hardness below 100gpg; Chlorine less than 0.1ppm. *Production rate is based on input water temperature of 25 C (77 F). If your water is colder production will be lower.

All RO Systems Wet Tested Before Shipping​

  500 Gallon Atmospheric Storage Tank - Seawater reverse osmosis systems produce water as a small stream, so a separate storage tank and delivery pump is needed to provide water to every tap on demand. We include (1) separate 500gal storage tank @ 46"D x 76H as a standard feature! BPA FREE! FDA/USDA Approved storage tank include float and fittings for easy installation with our desalination system.
  Upgraded Delivery Pump - Fully integrated compact booster pump draws water from RO storage tank and delivers perfect water pressure to all taps. Installs quickly and easily and features one of the lowest noise levels (47 dB(A)) in it's class. Dimensions: 16"L x 7.6" W x 12"H; 1" Inlet/Outlet Ports. Power is 220v, 60hz 1-phase. 1 HP Motor. Output is 10 gpm at 50psi. Includes (2) 1" Stainless Steel Flex Hoses for easy installation!
  Post Ultraviolet Bacteria Disinfection - provides 4-log (99.99%) reduction in bacteria, viruses, and protozoan cysts (specifically giardia lambila and cryptosporidium) to protect RO membranes from bacteria growth and bio fouling. Integrated UV system provides maximum output with the highest quality quartz sleeve with visual lamp-on indicators and audible lamp failure indicator. A UV(ultraviolet) system can be used to maintain the disinfection of the treated water in the storage tank - this is a great add-on feature if you do not use your stored water on a regular basis or the water sits unused - this uv system easily installs after the storage tank and re-pressure pump to provide bacteria free water at every tap. Power: 220v 60hz - Inlet/Outlet: 3/4" MNPT - Chamber Length: 35.4" - Diameter: 2.5" - Power Supply: 7.3" x 3.2" 2.5" - Flow Rate: 10gpm @ 30mJ/cm2 Dose
Water Totalizing Meter - Our seawater reverse osmosis totalizing meter accurately displays how many gallons of water you are using, making it easier for you to monitor your daily water use and track how many gallons are running through the filters.
Exclusive RainDance Preloaded Flash Drive - Installation has never been easier with our Seawater Desalination Package Flash Drive! Includes essential information like detailed installation instructions, pictured diagrams, owners manuals, ABC's of Plumbing Handbook and more!

RainDance Water Systems Exclusive Offers:

Package will also include a *5 year replacement carbon filter package at no charge. Replacement Package Includes: 20 replacement carbon pre-filters *5 year supply of carbon filters when replaced every 3 months & a 5 year Replacement UV Bulb Package. UV Bulbs should be replaced every 12 months.

How Our Best Selling Seawater Purification Package Works:

  • You will need to deliver the incoming seawater at 30psi @ 8gpm water to the inlet of the automatic backwashing sediment/sand pre filter.
  • Out-coming water from the backwashing filter is then treated with the automatic antiscalant injection system to pretreat hard water & silica.
  • Water then enters the attached 20” carbon prefilter for extra membrane protection.
  • This clean pre-treated water then enters the seawater reverse osmosis purification system.
  • The purified seawater beings to fill the nearby storage tank located nearby.
  • The storage tank will continue to fill until the included float switch closes and shuts the entire system off.
  • When there is a demand for water the re-pressurization pump is activated and draws product water from the storage tank to your application(s).
  •  Lastly, the UV(ultraviolet) system is used to maintain the disinfection of the treated water in the storage tank - this is a great add-on feature if you do not use your stored water on a regular basis or the water sits unused - this uv system easily installs after the storage tank and re-pressure pump to provide bacteria free water at every tap.
  • If enough product water is used from the storage tank, the float switch will reopen – reactivating the system to begin replacing the product water.

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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.