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

Paint Line Washer Water System

Complete Water Solutions recently designed and installed a water system for a paint line pre-wash system. The system uses Reverse Osmosis water to help remove constituents that would otherwise impede the paint process. The following equipment was provided: Twin S-14A Twin Alternating Water Softener System (Hardness Removal)  Duplex Softener System 1 Tank Online 2nd Tank […]

When Should I Service My Industrial Water Softener?

All industrial water softeners and industrial water treatment equipment require maintenance. Today we take a look at a Fleck 2900 Twin Softener System equipped with a 3200NXT Electronic Controller. This system is used to exchange calcium and magnesium hardness ions for sodium ions prior to a reverse osmosis system. This process is also called or [...]

When Should I Service My Carbon Filter?

Carbon Filter Service All industrial water treatment equipment will require service. If you're wondering if you should service or replace your carbon filter, we're here to help. In this video, we take a look at a Fleck 3150 NXT Industrial carbon filter.  This carbon filter is used to remove chlorine prior to a reverse osmosis [...]

Thank You To The Local Contractors

Saying Thank You Being a small business owner / contractor can sometimes be a thankless / 80+ hour a week job. At Complete Water Solutions one of our core values is We Work Hard & Reward Hard Work – We will celebrate the hard work of individuals and teams. While this value was implemented for our team […]

Complete Water Solutions New Building Update

Complete Water Solutions will be relocating its operations to its new facility located in Twin Lakes, WI, later this year. We are excited to share with you the updates of our new building. We have some news coming up once we are moved in. We Are Moving Soon! Stay up to date on our building […]

Cooling Tower Cleaning By Complete Water Solutions

Cleaning Cooling Towers Complete Water Solutions was called out by one of our clients to clean 4 cooling towers. As you can see they were full of bio and scale. Your Cooling Tower Cleaning Experts We were able to clean the tower and get the customer back up and running. Learn more about our services [...]

Evapco Cooling Tower Cleaning

Recently a customer contacted Complete Water Solutions asking us to clean and disinfect their (2) Evapco Cooling Towers. Complete Water Solutions arrived onsite did a safety inspection. Before work could begin Complete Water Solutions did a Legionella Test To make sure the tower was clear. Complete Water Solutions cleaned the towers and disinfect the two […]

Pharma Water System Service By Complete Water Solutions

Complete Water Solutions specializes in providing water treatment equipment and services to the industrial marketplace. Over the years we have specialized in Pharmaceutical, and Food & Beverage Manufacturers. We realize the importance in having a robust system and a bulletproof service plan. Complete Water Solutions has years of experience servicing equipment in these markets! We […]

Complete Water Solutions Welcomes Fernando To The Team!

Complete Water Solutions is excited to announce Fernando has joined our Field Service Team. Fernando’s Water Treatment Background Prior to Complete Water Solutions Fernando has been with another local area water treatment company for over 4 years and has successfully completed his journeyman-restricted license.  Fernando worked hard to master his craft, learn the rules/laws that […]

Need More DI Water?

We Have Your DI Water Needs Covered! Recently a customer had (6) 3.6 MixBed exchange tanks like the ones on the right of the picture above. With increased demand for DI Water, the customer was experiencing increased exchanges. Complete Water Solutions noticed the increased exchanges and offered a more cost-effective solution. With limited space, we [...]

Complete Water Solutions New Facility Update

New Building Update – Complete Water Solutions Late last year Complete Water Solutions announced a new facility in Twin Lakes WI. The new facility is underway and about 1/2  completed. The new facility will allow Complete Water Solutions the capability to expand services and provide fabrication of water treatment equipment. (Stay Tuned) Complete Water Solutions […]

Fiberglass Replacement Tank #2

Recently, on a past post, Complete Water Solutions was called out to replace a fiberglass tank. There were two tanks that were leaking due to excessive pressure swings that was causing the tank to expand and contract a lot. The customer had called another vendor out which told the customer that both tanks were not […]

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