Thomas Desalination Service

Thomas Desalination Service was established in 1981 in Southern California. Currently, we are located in the State of Washington, just outside Seattle. We have been servicing and installing reverse osmosis desalinators for over twenty years to the pleasure boat market from San Diego, California to Anacortes, Washington.

We have systems available from 7 gallons per hour to 6,300 gallons per day. Horizon Reverse Osmosis watermakers can be installed on boats from as small as 30 feet to Mega Yachts. Commercial watermakers for island resorts and hotels are also available.

Service and Install

We service every brand of watermaker on the market. Our fully stocked service van will travel to any boat in any marina to provide you with honest and expert service. If you are located outside the state of Washington, just ship us your broken unit or component. We generally can turn a repair around in one or two days. We do all phases of system maintenance and repair including membrane cleaning, pickling, and pump rebuilding.

Marine Watermakers

Our focus has been to service and install as well as provide parts and components for one product only, MARINE WATERMAKERS. We have been a factory authorized dealer for Horizon Reverse Osmosis (HRO) for over twenty years.