Industrial Reverse Osmosis Sizing Guide & Calculator

How do you size an industrial reverse osmosis system? The following Industrial Reverse Osmosis (RO) water sizing calculations can be used as a rough guide for industrial water reverse osmosis systems.

To view other industrial calculators such as industrial water softeners and iron, carbon, and ML filters, see the industrial and high purity water guides and calculators page. To see more detail on industrial and high purity reverse osmosis systems, go to the reverse osmosis page here. Other calculators for specialized industrial reverse osmosis stainless steel systems are here:

If you need information about your water to complete the calculators above, note that we offer free basic water testing to qualified engineers and industrial, commercial, and healthcare organizations.

General Industrial Reverse Osmosis Sizing Calculator

Reverse osmosis desired gallons/day (gpd):
Reverse osmosis water forwarding pump size (gpm):

There are multiple variables in sizing ultrapure & industrial reverse osmosis systems that are beyond the scope of the RO calculator below. Examples include water pressure, temperature, flow rate, and available foot print. Therefore, these industrial RO guides should only be used for quick estimates. For more detail on sizing, pricing, leasing and/or financing, please contact a sales engineer at or 800-820-9021.

Industrial Water Solutions also offers preventative maintenance, engineering consultation, equipment leasing, financing, and build, own, operate options. Let us know if you would like information on how these services can help you reduce downtime and capital risks.

Related Industrial Water Products

Industrial Deionization
Industrial Water Filters
Industrial Water Softeners

Industrial Water Calculators

These industrial water calculators calculate total hardness, salt savings, boiler savings, and the appropriate size of industrial water softeners, industrial deionizers, and industrial reverse osmosis systems.

Legionella Control Softener Sizing Calculators & Guides

Industrial Reverse Osmosis Sizing Calculators & Guides

Ultrapure Water System Sizing Calculators & Guides

Industrial Steel Water Filter Sizing Calculators & Guides

Industrial Water Softener Sizing Calculators & Guides

Boiler Water Softener Sizing Calculators & Guides