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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

Fleck NXT or NT Controller Upgrade To NXT2

May 25, 2019 · By Nathan Olszak
Complete Water Solutions was recently asked to rebuild a Fleck 3900 NT Industrial Water Softener System. One of our recommendations was to upgrade the controllers on the softeners. The customer had the original NT digital controllers on the softener system (2 generations back). Upgrading the controller on a pre-scheduled plan can help with preventing an [...]
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Magnum Carbon Magnum Softener, complete water solutions, ro pretreatment

RO Pre-Treatment Change From Chemical To Mechanical

May 7, 2019 · By Nathan Olszak
RO Pretreatment: Chemical to Mechanical! Complete Water Solutions was called out to a customer in Missouri regarding problems with their paint line Reverse Osmosis System. The customer was experiencing excessive membrane replacements (8 Membranes 2x A Year) and had several other mechanical problems. The customer was currently using antiscalant and bisulfite After performing an onsite [...]
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uv quarts sleeves, broken quartz sleeve, Shattering Quartz Sleeves & Bulbs

Shattering Quartz Sleeves & Bulbs – Protection By CWS

April 16, 2019 · By Nathan Olszak
Shattering Quartz Sleeves & Bulbs Solutions from CWS At Complete Water Solutions, we’ve encountered cases where customers have experienced UV system quartz sleeve shattering or Shattering Quartz Sleeves & Bulbs. This issue can arise from stress fractures, improper handling, or sudden pressure changes, such as water hammer events. When a quartz sleeve shatters, it can [...]
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Complete Water Solutions Welcomes Kevin To The Team

April 7, 2019 · By Nathan Olszak

  Complete Water Solutions Welcomes Kevin To Our Facilities Team Complete Water Solutions is excited to announce Kevin has joined our Facilities Team. Prior to Complete Water Solutions Kevin was employed as a Chem Tech at a local power plant for over 32 years.  As a Chem Tech, Kevin had experience with various water treatment […]

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Fleck 3900 Softener Emergency Repair

March 30, 2019 · By Nathan Olszak
Complete Water Solutions was contacted by a food manufacture who was experiencing their waste water plant almost over flowing - upon further discussion they found that one of the softeners was stuck in regeneration. Upon further discovery we found the reason why and we fixed it. Some times you need some new parts. Broken Fleck [...]
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Steel Mill Water Softeners – Emergency Repair

March 23, 2019 · By Nathan Olszak
When your industrial water softener takes a break on Friday - Give Us A Call or any time your softener stops working give us a call. This softener decided to stop working on Friday @ 6 in the morning, and this customer made the right call - to us! We quickly sprang into action and [...]
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Emergency Carbon Filter Replacement @ Tractor Manufacturer

March 14, 2019 · By Nathan Olszak
Emergency Carbon Filter Replacement Like most emergencies, they happen when you least want them too. They also seem to have a knack of happening on a Friday @ 3PM, and this case was no different. Complete Water Solutions was contacted by a tractor manufacture who wanted to know if we work on competitors' equipment. In [...]
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water softener resin, complete water solutions

Resin Replacement For DI System & Softener

March 8, 2019 · By Nathan Olszak
Professional Resin Replacement For DI System & Softener Complete Water Solutions recently performed a resin replacement service for both a DI Water System & Softener System. Over 400 Cubic Feet Were Replaced.         The work performed included Lock Out & Tag Out Of Water System Confined Space Safety Review Air Monitoring Removal [...]
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Dealkalizer Replacement

March 1, 2019 · By Nathan Olszak
  Complete Water Solutions was given an opportunity to find a solution for dealkalizer relacement. The old dealkalizer system was starting to leak and the resin was no longer working effectively. Complete Water Solutions supplied a smaller more efficient dealkalizer system to replace the larger dealkalizer. The original unit was installed when the boiler system [...]
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fleck 9100 commercial water softener, complete water solutions

Waste Water Treatment Plant – Softener Replacement

February 22, 2019 · By Nathan Olszak
Complete Water Solutions recently performed a softener replacement at a Waste Water Treatment Plant located in Wisconsin. The facility was experiencing hard water and iron staining. Complete Water Solutions performed a free P.M. Service and discovered that the softener was channeling. Softener Replacement from CWS What is Softener Channeling? Channeling occurs typically due to low [...]
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complete water solutions, magnum cv logix softener valve

Linen Facility Softener System Upgrade

February 15, 2019 · By Nathan Olszak
Complete Water Solutions was awarded a contract to replace the aging Magnum Triplex Softener system at an industrial linen facility. The facility uses soft water in its wash process & for boiler feedwater makeup. Using soft water reduces detergent usage as well as reduces energy consumption in the boiler. The old Mangum Softener System was [...]
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osmonics e8-57k-dlx, lakewood controller, allen bradley micrologix 1000, complete water solutions

Library Of Congress Awards Complete Water Solutions

February 10, 2019 · By Nathan Olszak
Complete Water Solutions is proud to announce that the Library of Congress awarded our team the project to upgrade its Osmonics E8-57K-DLX Reverse Osmosis System. With over 40 years of combined experience in industrial water purification, we were chosen for our expertise, reliability, and ability to deliver fast, effective solutions when critical systems go down. [...]
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