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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
Industrial Water Softener

Industrial Progressive Flow Water Softener

February 2, 2020 · By Nathan Olszak

Our customer was experiencing issues with the existing triplex softener system. It was smaller in size and was not very reliable when it came to providing soft water. At times the old softener system would experience issues with the ability to provide water thus starving the plant.

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reverse osmosis troubleshooting, complete water solutions, ro troubleshooting

Reverse Osmosis Troubleshooting Video Series

January 10, 2020 · By Nathan Olszak
Reverse Osmosis Troubleshooting Complete Water Solutions begins our series on Reverse Osmosis Troubleshooting. We will be providing a series of videos to explore different problems, root causes, and how to fix them. This video is geared towards commercial and industrial Reverse Osmosis Equipment. However, this series can be applied to many different sizes and manufacturers [...]
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new partner, complete water solutions

New Partner Announcement

January 1, 2020 · By Nathan Olszak
We are Pleased to Provide a New Partner Announcement!John Schultz has accepted part ownership at Complete Water Solutions. John joined the Complete Water Solutions field service team in 2015. John quickly demonstrated his ability to service, install, and troubleshoot industrial water treatment equipment. John’s efforts have been instrumental in providing exceptional customer service and growth. [...]
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complete water solutions, twin lakes wi, water treatment

Complete Water Solutions Ribbon Cutting

December 23, 2019 · By Nathan Olszak
New Twin Lakes Facility Complete Water Solutions recently held a ribbon-cutting ceremony at our new facility in Twin Lakes, WI! We were welcomed by the Twin Lakes Chamber Of Commerce. We are honored to be a part of the Twin Lakes Community and are excited about our future here!
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Bruner Media Filter Rebuild D180-3

November 14, 2019 · By Nathan Olszak
Bruner D180 Valve with 952 Stager Assembly Rebuild D180-3 Complete Water Solutions was recently called to repair/rebuild a Multi Media Filter (Southern Illinois) that was equipped with a Bruner D180 3" Valve Assembly and 952 Stager Assembly. The bypass valve was leaking by unfiltered water and causing other equipment that relies on the filtered water [...]
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Now Hiring: Office Assistant

November 4, 2019 · By Nathan Olszak
Complete Water Solutions is growing and we are looking to fill a few positions. Office Assistant, Sales B2B & Service. Come work for a growing team and be valued. Complete Water Solutions offers a friendly working environment and competitive compensation with benefits. Job Description & Duties: The office assistant supports every division of our team [...]
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osmonics e4-13200, complete water solutions, boiler

Osmonics E4-13200 Reverse Osmosis Boiler Feed Water

October 29, 2019 · By Nathan Olszak
Osmonics E4-13200 Complete Water Solutions supplied a 13200 Gallons Per Day. Complete with pre-treatment equipment and ancillary equipment. The RO System is rated @ 55 Degree F (12 Degree C) Water for 540 Gallons Per Hour. Equipment: Twin Softener System Model Number: K90-960 (Alternating) The softener system is put in place to exchange calcium and [...]
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E8-144K-DLX 100 GPM Reverse Osmosis System

October 23, 2019 · By Nathan Olszak
100 GPM Reverse Osmosis System Complete Water Solutions designed and provided a 100 GPM Reverse Osmosis System (Located Outside Of Charlotte N.C.). The system was sized based on the customer using an average of 60-80 GPM Average. This will reduce the duty cycle of the RO System. The RO Water is used for boiler feedwater, [...]
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15 Gallon Per Minute Reverse Osmosis System

October 15, 2019 · By Nathan Olszak
If you need an RO System - Contact Complete Water Solutions - (855) 787-4200 or info@complete-water.com Project Scope: Complete Water Solutions provided a 15 Gallon Per Minute Reverse Osmosis System to provide RO quality water for the Glass rinse process. Equipment: Water Softener Model Number: S21-A The water softener system is put in place to [...]
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Osmonics E8-57K-DLX Reverse Osmosis System

October 2, 2019 · By Nathan Olszak
Osmonics RO System E8 Complete Water Solutions provided a turnkey installation of an Osmonics E8-57K-DLX Reverse Osmosis System. The RO System was used for sanitization make up, cooling tower make up and production needs. We started by removing the existing ro system and relocating it to the boiler room. The boiler was using water softener [...]
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Cleaning Hard Water Scale From Reverse Osmosis Membranes

September 26, 2019 · By Nathan Olszak
Cleaning Hard Water Scale Complete Water Solutions was called upon to help with Cleaning Hard Water Scale From Reverse Osmosis Membranes. The powder coating industry and the metals finishing industry have found Reverse Osmosis to be beneficial to provide clean water to clean and rinse parts. Using Reverse Osmosis metal finishing industries have reduced water [...]
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Water Softener Fiberglass Tank Collapsed

September 17, 2019 · By Nathan Olszak
Complete Water Solutions recently received a call from a metal coating facility that uses Reverse Osmosis Water for their paint rinse line when their Water Softener Fiberglass Tank Collapsed. Paint rinse lines prep the metal surface before paint or coating is applied. In some applications after painting the product is ran through a final spot [...]
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