Reverse Osmosis Seawater Desalination & Watermakers

Rainman Watermakers - USA Sales And Service Facility
Marine, Off-Grid and Rapid Deployment Solutions

Providing Sales and Service to Seatask Customers throughout North America
  • Two component reverse osmosis desalination systems
  • Portable and installation configurations
  • Options of up to 37 (GPH) gallons per hour
  • Portable units require no installation
  • 115V / 230V - Optimized for the Honda EU2000i
  • Gasoline options - Entirely portable off grid solutions
  • 12V DC systems also available
  • 8-10 year membrane life.
  • Cost effective - less expensive than other watermakers, yet more robust.
  • Simplicity - minimalist design - fewer complex parts - reduced maintenance​, increased reliability. 
  • Made in Australia
  • USA Sales and Service by Seatask
as featured in...
"Rainman systems are incredibly reliable, in-field serviceable, portable yet installation optional and yet extremely simple"

Seatask Military Solutions

Rainman systems are built tough, built to last, and in active use.
​Contact us today for more information.
Seatask LLC is a registered entity with the System for Awards Management to enable the conduct of business with the federal government. View our government response page here

Onboard Water-Testing Equipment

It’s possible to prevent waterborne disease outbreaks and toxic poisoning due to contaminated potable water. The contributing factors to outbreaks and illness onboard emphasise the need for hygienic handling of water along the supply chain from source to consumption.
*Laboratory free, remote location water testing equipment for drinking water, tanks and water distribution systems*
Seatask line of tests are designed for mariners from the liveaboard cruiser and recreational boater looking to monitor and test water supplies onboard to prevent waterborne illness, to the commercial vessel looking to comply with port state, flag state and/or MLC onboard water testing requirements. Tests are ATSM approved and follow EPA test methods.
  • EASY TO USE - simply select the test required, snap the ampoule tip in the sample container - ampoule automatically fills. No mess and No Contamination.
  • FASTEST RESULTS - In hours, not days - No Laboratory Required - designed for onboard use.
  • EXTREMELY ACCURATE - within 99% correlation to standard laboratory plate counts.
  • NO FALSE POSITIVES - Only measures log phase, viable microbial activity
  • EASY TO UNDERSTAND RESULTS - Shows both presence/absence and quantitative results. Observe for color change over time.
  • RUGGED DESIGN - Ideal for field testing, NOT storage sensitive - up to 4 years shelf life.
  • Made In America
Keep up to date on the latest rainman watermaker and seatask updates by signing up to our periodic newsletter.
​We keep it short, sweet and to the point
* indicates required