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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
100 GPM ro Systems, Complete Water Solutions

Water Treatment Equipment Leasing

September 20, 2017 · By Nathan Olszak
Wondering how Water Treatment Equipment Leasing can benefit you? It has been a long-standing tradition that many of us want to see the "payback" or "savings" from upgrading or replacing your water treatment equipment. While it may not be true for every situation, many customers see immediate results by upgrading or replacing their existing water [...]
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Mixbed DI Exchange Tanks. complete water solutions

Emergency DI Water – Emergency DI Exchange Tanks – Chicago Land IL

September 13, 2017 · By Nathan Olszak
Medical Manufacturer DI Water Complete Water Solutions was contacted when a medical manufacturer needed DI Water and the current supplier could not deliver. The customer had called their DI Water / DI Bottle supplier for an emergency exchange several times. With no response, they began to search. Emergency DI Water Supplier After contacting Complete Water [...]
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Maintain an Industrial Water Softener System

September 6, 2017 · By Nathan Olszak
Are you wondering how to maintain an industrial water softener? A good preventative maintenance plan can help you avoid most softener failure issues. Today, people use softener systems for various applications, from general water conditioning to industrial ingredient water. A few manufacturers of valves control the softening function, and many agree that having a preventative maintenance plan in [...]
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ro membrane service, ro membrane replacement, complete water solutions

GE Osmonics AK4040F Membranes – Reverse Osmosis Membrane Replacement

August 31, 2017 · By Nathan Olszak
Complete Water Solutions was recently contracted to replace all the GE Osmonics membranes in (2) RO Systems. Each RO System was manufactured by different companies. That is not a problem for Complete Water Solutions! We provide parts, membranes, and service for all manufacturers. No matter who you bought it from or the application Complete Water [...]
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hiring, complete water solutions, careers

We’re Hiring – Experienced Water Treatment Technicians

August 28, 2017 · By Nathan Olszak
Feel Stuck In Your Career With No Advancement? We are growing and are looking for experienced Water Treatment Technicians! Job Description & Duties: We are currently searching for a Full-time (40 hours/week) field service technician to support our water treatment business. This position is for an experienced field service technician. Responsibilities include but are not [...]
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ro membrane cleaning, reverse osmosis membrane cleaning, complete water solutions

RO Membrane Cleaning

August 20, 2017 · By Nathan Olszak
We've seen it all when it comes to challenges customers have faced in regard to Reverse Osmosis (RO) Membrane Cleaning. RO Membrane Cleaning May Include: Silica Removal Iron Fouling Colloidal Biological Clay Silt Hardness Scale and many more We Clean & Service Every Reverse Osmosis System Currently In Use Today Complete Water Solutions was contracted [...]
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edi water, di water, complete water solutions

Success Story: Metal Coating Equipment Manufacturer in IL

July 24, 2017 · By Nathan Olszak
When a metal coating equipment manufacturer in Illinois faced critical production challenges due to underperforming water purification systems, Complete Water Solutions delivered a seamless, cost-effective solution through a DI Exchange Tank Service and a full turnkey system upgrade. The Challenge: Failing Water Systems Threatened Production Quality This customer manufactures precision metal coating equipment used across [...]
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softener media filter rebed, complete water solutions

Food Manufacturer Softener & Media Filter Rebed – Wisconsin

July 11, 2017 · By Nathan Olszak
As the trusted company for media filter rebed, Complete Water Solutions was awarded a contract to replace the media in (3) Multi-Media Filters and (2) Water Softener Vessels. Servicing All Manufacturers for Media Filter Rebed While Complete Water did not provide the equipment originally, we service all manufactures including Siemens Water Technology. We replaced the [...]
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100 GPM ro Systems, Complete Water Solutions

Pharmaceutical Water Treatment

June 12, 2017 · By Nathan Olszak
This is a follow-up to a recent post on our blog. CWS offers Pharmaceutical Water Treatment support Complete Water Solutions supplied, installed, and started up the following equipment: Quad Softener System 400 GPM Water Softener Capability Fleck 3900 Control Valve 3200NT Electronic Controller Fleck 3” Stainless Steel Flow Meter Quad Carbon Filtration System 400 GPM [...]
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sand filtration, complete water solutions, industrial sand filtration

Sand Filtration System Paper Mill – Wisconsin

June 1, 2017 · By Nathan Olszak
Complete Water Solutions was awarded its second Sand Filtration System Paper Mill in Wisconsin project for a major paper consumables manufacturing facility. Sand Filtration Solutions for Wisconsin Paper Mills This is the second sand filtration system Complete Water Solutions has provided for this facility. The system plays a critical role in reducing turbidity in the [...]
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ge osmonics e8-57k, complete water solutions, e8-57k

GE Osmonics E8-57K Reverse Osmosis System

May 22, 2017 · By Nathan Olszak
Poultry Food Manufacturer – RO System Complete Water Solutions was awarded the contract to provide a GE Osmonics E8-57K Reverse Osmosis System. Under pressing DNR Chloride Restrictions customer has been looking for ways to reduce their overall chloride reduction. Complete Water Solutions was able to find several cost-effective measures to help reduce chloride reduction and [...]
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ecowater, ecowater dealer, complete water solutions

Complete Water Solutions Now an Ecowater Dealer

April 12, 2017 · By Nathan Olszak

Featured Ecowater Products   ERO 375 Reverse Osmosis Reverse Osmosis (RO) drinking water systems provide high-quality water for worry-free drinking or cooking. This state-of-the-art filter will improve the quality of water from wells or municipal water supplies. Industry rated, 50 gallons per day membrane production rate, (actual production rate will vary depending on water usage […]

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