Commercial Reverse Osmosis Systems



Made in USAWater Purification Companies In San DiegoDime Water, Inc. is a leading manufacturer of highly engineered commercial reverse osmosis systems. Choose from our standard product line of reverse osmosis systems or choose to utilize our in-house engineering team to design a custom engineered system based upon your needs. If you can describe it, then we can most likely engineer and build it.

Our quality control measures involve at least two technicians at all times to ensure that the final quality and performance of each system are ensured.

Each reverse osmosis system is supplied with a comprehensive instruction packet with a reverse osmosis system diagram as well as a complete read-out of performance test results.


Properly designed high-pressure Commercial Reverse Osmosis and Industrial Reverse Osmosis Units:

  • Commercial Reverse Osmosis Systems available in businesses, labs, and residential applicationsAre able to reduce all dissolved analytes by 99% EXCEPT for Boron and Nitrates. Significant Boron reduction with its weak ionic charge requires special membranes and higher operating pressures, special pretreatment, or post-treatment. Nitrates require special membranes and higher pressures or post-treatment to reach 99% removal.
  • Can be constructed to achieve one or two megohm quality water without the need for post-treatment such as EDI or ion exchange DI tanks.
  • Have a membrane porosity from 0.0001 to 0.001 micron which makes it an effective barrier to bacteria, viruses, cysts, and endotoxins.
  • Are able to operate with water efficiencies as high as 85%
  • Will function without membrane replacement or cleaning for 5 years or more.
  • Provide extremely low hardness levels suitable for high-pressure boiler applications
  • As an aggregate use 25% less electrical energy than they did a decade ago because of improvements in membrane technology
  • Are offered with blend valves to permit tailoring of water constituents for brewers, distillers, coffee preparation, and bottlers.
  • Offer cost-effective pretreatment that eliminates CAPEX and OPEX of carbon filters and water softeners.
  • Can be custom-fabricated to fit provided spaces
  • Use controls that have a 10 year plus 100% reliability history


  1. What it does to water
    Its sole purpose is to separate the vast amount of water from all molecules of minerals and compounds dissolved in it utilizing pressure. Properly designed the average single pass unit will remove approximately 98.5% of the dissolved items with notable exceptions listed later on. The vehicle to make this process possible is called a semi-permeable membrane or membrane.
  2. History of the commercial reverse osmosis (RO) process
    The very first attempt to use a membrane for the removal of the dissolved materials originated as a military-sponsored project in Southern California in the late 1960s. This almost immediately became a popular product for households and gradually transitioned to commercial applications by the mid-’70s. Currently, a plethora of component manufacturers, both US and Pacific Rim-based have turned the commercial reverse osmosis industry into one requiring low entrance capital which in turn has fostered providers with low technical skills. Unfortunately, these businesses lead to low prices and muddy the marketplace, leaving the first-time purchaser with inadequate equipment.
  3. Current popular uses
    Medical, electronics, agriculture, beverages, drinking water, electroplating, painting, brewing, distilling, waste remediation to name a few.
  4. Three most important considerations in commercial RO design
    a. Pretreatment. Its importance cannot be overstated. As mentioned in #1, the membranes will attempt to remove everything dissolved in the water which leads to:
    (1) Hard water scaling of membranes which can make them ineffective sometimes in hours with water production tailing off to a dribble and the quality rapidly declining simultaneously. Cure can be a softener (expensive to purchase and operate), anti-scale chemical feed (only as reliable as the person responsible for replenishing the chemicals), or the Dime Water, Inc. ESF chemical-free, service-free, low-cost alternative.
    (2) Oxidizing materials such as iron and manganese that affect the membrane same as
    Hardness only more quickly.
    (3) Chlorine and organics removal. Modern membranes are slowly destroyed by chlorine
    and organics so they must be completely and reliably removed.
    b. Duty cycle. All too often this is overlooked to expedite the closing of a sale and units are delivered that must operate 24/7. Not only does this shorten system life, but no room is left for short or long-term increase use.
    c. Membrane selection and quantity. With so many available, care must be taken to match performance to water chemistry and not to torture them by using too few. The resulting shortened membrane life cost pales in comparison to the initial price savings.