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

We’re Hiring – Experienced Water Treatment Technicians

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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Success Story: Metal Coating Equipment Manufacturer in IL

Water Application: This water is used to test the equipment that is manufactured by the customer. They use high purity water for the hot water process and to keep UV lamps in their machines cool. It is important that the water be 1 Microsiemen or better quality to keep film/scale from forming. Current Situation: The […]

Food Manufacturer Softener & Media Filter Rebed – Wisconsin

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 [...]

Pharmaceutical Water Treatment

This is a follow-up to a recent post on our blog. Complete Water Solutions offers support for Pharmaceutical Water Treatment. 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 [...]

Sand Filtration System Paper Mill – Wisconsin

Complete Water Solutions was awarded the 2nd Quad Sand Filtration System for a paper consumables manufacturing facility. Sand Filtration Solutions This was the 2nd sand filtration system that Complete Water Solutions provided for this facility. The sand filtration system is in place to help reduce the turbidity for the process. The water comes from a […]

GE Osmonics E8-57K Reverse Osmosis System

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 [...]

Complete Water Solutions Now an Ecowater Dealer

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 […]

Complete Water Solutions Awarded Two (2) 100 GPM RO Systems

Complete Water Solutions was selected by a leading pharmaceutical company to provide a new water treatment system, two 100 GPM RO Systems. Complete Water Solutions is providing (4) Fleck 3900 Water Softener Systems, (4) Fleck 3900 Carbon Filtration Systems and (2) 100 GPM Reverse Osmosis Systems. The Two 100 GPM RO System Specs The RO [...]

Complete Water Solutions is Now an Elite Channel Partner with GE Water

At the close of 2016, Complete Water Solutions and GE Water & Process Technologies – signed an Elite Channel Partner agreement. This agreement allows Complete Water Solutions to supply GE RO Systems, Membranes, Pre-Filters & RO Chemistry. GE Elite Channel Partner We see tremendous opportunities to support the growth of industrial water treatment needs throughout [...]

Food Manufacturer Reverse Osmosis Failure

It’s December 30th (A Friday @ 3:00 PM) And Our Phone Rings – A customer is having a problem keeping the conductivity within spec for production. They need to be running by Jan 1st because that’s when production starts up. Their current service provider has been having trouble trying to diagnose the problem. Emergency Service […]

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