Nathan Olszak

  With over 30 years of hands-on experience in the water treatment industry, Nathan Olszak is a trusted water treatment expert. He specializes in designing, engineering, and servicing water treatment systems. As the owner of Complete Water Solutions, Osmonics, and Membrane Cleaning Pro, Nathan has built a reputation for delivering customized water treatment solutions that enhance efficiency, reliability, and water quality across various industries, including the medical, commercial, and manufacturing sectors. Nathan’s journey in water treatment began as a service technician. He gained in-depth knowledge by working with all major brands of equipment, including Veolia, Suez, Bruner, Culligan, Pentair, Aquamatic, Osmonics, GE Water, Marlo, Lakeside, Fleck, Autotrol, US Filter, ION Pure, Siemens, Evoqua, and many others. This hands-on expertise, combined with his technical certifications, has made him a leader in water system engineering and water management.

Credentials & Expertise

  • Certifications: David H. Paul Reverse Osmosis Certification, PLC Programming
  • License: Power Plant Operating Engineer 3rd Class
  • Specialties:
  • Design & engineering of water treatment systems and advanced water systems
  • Custom water filtration systems and solutions
  • Installation, automation, and repair of water treatment systems
  • Expertise in Reverse Osmosis (RO), Deionization, Water Softening, Carbon Filtration, Iron Filtration, UV Treatment, Ultrafiltration (UF), Process Filtration, CEDI/EDI, and more
  • Specialized knowledge in Boiler Feed Water, Tower Makeup Water, and drinking water production for industries such as bottling, pharmaceuticals, and food processing
  • Project management and reclaiming of water system waste for other uses
  • Evaluation of raw water sources and potential contamination risks
  • Industrial water treatment strategies to prevent corrosion and optimize system performance
  • Boiler water treatment to enhance energy efficiency and system longevity
Nathan’s commitment to excellence extends beyond equipment sales and service. He works closely with clients to develop tailored water treatment services that optimize performance and meet their operations' unique demands. His expertise covers methods that mitigate water impurities, ensure fresh water accessibility, and maintain regulatory compliance. It also includes the design of high-efficiency reverse osmosis systems for industrial use. Nathan focuses on the latest technology in water conditioning, water softeners, filters, and pumps to improve maintenance and efficiency. His experience in laboratory testing and biofilm control ensures the highest industry standards in water treatment processes and water management.  Additionally, his deep understanding of infrastructure and water data analysis provides long-term, cost-effective solutions that promote health and safety. His expertise ensures that businesses receive top-tier, quality water treatment solutions. For insights into the latest industry trends, innovations, and best practices, explore the Complete Water Solutions Blog, where Nathan shares valuable information on water filtration systems, sustainability, and water solutions engineering.   Give Us A Call (855) 787-4200 or Email info@complete-water.com

How Long Do RO Membranes Last?

  In this video, we try to answer a common question: How Long Will My RO Membranes Last?  Over the years we have looked at past data, we have had membranes last from 1 year to 10 years. Membrane life can vary from the application, pre-treatment, water quality, and how hard you are running the […]

RO System Shutting Down On Low Pressure

In this video, we look at one reason that is not covered in the RO troubleshooting guide regarding low pressure. This RO system was shutting down on low pressure. Many RO Systems are equipped with a low-pressure cut-out switch. This switch shuts the RO down if the pressure falls too low or no pressure at […]

RO Low Concentrate (waste) Flow – RO Service

In this RO Troubleshooting Video, we discuss why you might have low concentrate (waste) flow. A few things that are not discussed in this video that can assist you in your troubleshooting are looking at the flow meter to make sure there is nothing obstructing it or that it is not damaged. Also, replace your […]

Why Do I Have High Conductivity In RO Permeate Water?

  In this RO Troubleshooting video, we investigate some reasons why you may be experiencing high conductivity in your RO Permeate water. High conductivity in RO permeate is not really a desired product, most RO membranes should remove between 97% to 99.5% Total Dissolved Solids (Conductivity). These conductive solids are rejected and disposed of by […]

Reverse Osmosis (RO) Troubleshooting – Pressure Drop Across RO System

Troubleshooting RO Systems can be tough at times. Trying to identify why a system is having problems can be time-consuming and sometimes frustrating. Complete Water Solutions offers both a Reverse Osmosis Troubleshooting guide and RO Troubleshooting videos to help in identifying what might be causing the issue you're having. In this video, we discuss excessive [...]

5 Things You Should Know Before Buying Your Next RO

In this short book we cover 5 major things you should know before purchasing your next RO (Reverse Osmosis System). This is a good starting point for anyone who is looking to purchase a RO System and will help provide some valuable information. Topics covered include: Water Testing - Why testing your feed water is [...]

Automated Water Blending System

Complete Water Solutions Water Blending Station Complete Water Solutions recently built a blending station for one of our clients. This system was used to take cow water and well water (two separate sources) and blend it together to make up cooling tower water. Cow water is water that is removed during the dairy refining process. [...]

Lab Water System Upgrade To Save DI Exchange Tanks

Lab Water System Upgrade from Complete Water Solutions About 3 years ago Complete Water Solutions was asked to provide DI Exchange Tanks for Deionized water for a lab. We replaced the existing DI tanks with our tanks. The exchange frequency was about 1 change out per month on average. As a part of CWS DI [...]

Complete Water Solutions Welcomes Dennis To The Team

Complete Water Solutions is excited to announce Dennis Eisenhauer has joined our Sales Engineering Team. Dennis has been in the water treatment industry for over 30 years. His water treatment experience has included, assessing client needs, designing water systems utilizing different types of technology. We are excited to welcome Dennis aboard and believe he will [...]

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