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Seawater Reverse Osmosis (SWRO) Domestic Water Guide & Calculator

How do you size domestic seawater (salt water) reverse osmosis water systems? Sizing and designing a seawater reverse osmosis domestic water system is a sophisticated process. Many variables exist that are beyond the scope of the seawater reverse osmosis domestic water guide & calculator below.

The below calculations are for quick estimates for general sizing, design, and footprints of SWRO domestic water systems. Reverse Osmosis feed water chemistry, pressure, temperature and process feed flow rate are all variables that have effects on seawater reverse osmosis desalinization system sizing, which are not considered here. Other calculators for specialized, ultrapure reverse osmosis systems can be found here:

Standard output capacities range from 5,000-300,000 GPD (3.5 GPM – 200 GPM) and are flexible for customization. Email or call Nancrede Engineering at 888-56-WATER (569-2837) for detailed control types (GE, Allen Bradley, Siemens PLC, progressive flow, additive flow), or specific materials of construction, such as (316L, 304, 316) stainless steel or specific valve & instrument types.

Our sales engineering team consists of degreed mechanical engineers, experts in water treatment and processes for seawater reverse osmosis desalinization systems including pre-treatment equipment, like carbon filters, ultraviolet (UV) lights, pumps, bacterial sub-micron filters and ultrapure water storage tanks. We’ll find the perfect reverse osmosis system for all your most critical high purity water needs.

Let us know if you would like information on how preventative maintenance and engineering consultation can assist you in reducing capital risks and downtime. We also offer leasing, build, own, operate options and financing options.

Reverse osmosis desired gallons/day (gpd):
Reverse osmosis water forwarding pump size (gpm): 888-569-2837