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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 Reverse Osmosis & DI Water System Service – Don’t Stress

January 31, 2018 · By Nathan Olszak
Don’t Stress About Your Water System! Let our team help you with Industrial RO & DI Water System Service. Complete Water Solutions provides services for Industrial Water Treatment Equipment. Reverse Osmosis Carbon Filtration UV Systems Deionization Water Softeners And Many More (Don't See It Here Check Out Or Website) We service all major manufactures – [...]
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polishing softener, complete water solutions, Plastic Molding Equipment Water Scale

Plastic Molding Equipment: Water Scale

January 24, 2018 · By Nathan Olszak

Complete Water Solutions was called out to a plastic mold facility after a new extrude machine scaled up due to hard water. The scale caused thousands of dollars of downtime. Complete Water Solutions did a full audit of the facility and found that hard water and the lack of adequate chemical treatment was causing the […]

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selecting an ro membrane, complete water solutions, ro membrane replacement

Need Help Selecting An RO Membrane? Not Sure What You Have?

January 10, 2018 · By Nathan Olszak
At Complete Water Solutions we have membrane experts on hand to help you select the appropriate membrane for your Reverse Osmosis System. Selecting An RO Membrane - When Do You Replace Them? We get this question quite often, while there is no exact date to when you should replace your RO membranes there are some [...]
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GE E8 PLC, Complete Water Solutions

Switch From DI to Reverse Osmosis For Boiler Feed Water

January 3, 2018 · By Nathan Olszak
Switching from DI to RO Boiler Feed Water: The Project Scope Complete Water Solutions was asked to provide a turnkey solution to replace the DI Water System. The current system consisted of Cation & Anion separate bed Deionization. The new system needed to provide low conductivity, hardness water @ 60 GPM Flow Rate. Why Switch [...]
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Complete Water Services Nalco Reverse Osmosis System

December 27, 2017 · By Nathan Olszak
Complete Water Solutions was recently contacted to provide a quote on new membranes and carbon media for a Large Utilities Plant (Steam & Cooling) Located in Illinois. Complete Water Solutions was contacted by the customer 2 weeks ago and needed a quick turn around to replacing the membranes and carbon media. Complete Water Solutions was [...]
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green sand iron filter, complete water solutions

Chilled Water Loop 40 PPM Iron Level

December 20, 2017 · By Nathan Olszak
Iron Filtration Chilled Water Loop Recently a customer contacted Complete Water Solutions after experiencing high levels of iron in the chilled water loop. Iron is a major makeup of the earth's crust. Iron occurs naturally both in groundwater and surface waters. Waters containing iron are not known to cause any harmful effects in humans. Iron [...]
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Why Work at Complete Water Solutions?

December 13, 2017 · By Nathan Olszak

Complete Water Solutions Is Growing! Complete Water Solutions is a rapidly growing water treatment business located in SE Wisconsin that designs, manufactures, sells, and services Commercial and Industrial Water Treatment Equipment. From the time it enters the facility to the time it leaves-we handle everything in between. Come and grow with us! Check Out Our […]

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Veolia Finalizes the Acquisition of GE Water & Process Technologies

December 6, 2017 · By Nathan Olszak
Veolia announced it would buy GE’s water business for €3.2 billion Veolia has finalized the acquisition of GE Water & Process Technologies. In connection with completion, Veolia sets up a Business Unit, “Water Technologies & Solutions”, placed under the leadership of Heiner Markhoff - former President and CEO of GE Water. Mr. Markhoff joins Veolia [...]
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Bruner D180 Valve, industrial softener system, aquamatic blocking valves

Emergency Bruner D180 Valve 2″ Hospital Softener Repair

November 29, 2017 · By Nathan Olszak
Bruner D180 Hospital Softener Repair Complete Water Solutions was contacted by a Hospital boiler room engineer for a Bruner D180 Hospital Softener Repair. The softener system had begun producing hard water and they could not get consistent soft water. The hard water was causing problems with boiler chemistry and the laundry facility. They requested that [...]
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free reverse osmosis daily log, complete water solutions, ro system daily log

How to Record Your RO System’s Performance

November 22, 2017 · By Nathan Olszak
RO Systems can be simple and complex and used in various applications. It's essential to know how to record your RO system's performance. In this blog, we are going to just be focusing on RO Systems for water treatment applications and how to make sure they're running at their best! We get quite a few [...]
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Complete Water Solutions Announces New Facility

November 15, 2017 · By Nathan Olszak

Complete Water Solutions announced today the final approval for a new 5,500 sq. ft. facility located @ 851 W Main Street Twin Lakes Wisconsin. The new facility will allow Complete Water Solutions the capability to expand services and provide fabrication of water treatment equipment. New Twin Lakes, WI Facility Complete Water Solutions designs, manufactures, and […]

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Membrane Replacement, 125 GPM Reverse Osmosis System, complete water solutions

Saturday RO Membrane Replacement – Get New Reverse Osmosis Membranes

November 15, 2017 · By Nathan Olszak
When you need membranes changed and your only downtime is Saturday - Rest assured Complete Water Solutions will be there.  We understand that some times that routine maintenance has to be done on weekends, evenings and holidays. Complete Water Solutions understands the importance of making sure that you stick to your maintenance schedule. When it [...]
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