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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

Osmonics Beverage Nano Filtration (NF) 1233033 – Membrane Change Out

February 25, 2021 · By Nathan Olszak
Membrane Change Out Complete Water Solutions recently changed out Nano Filtration Membranes on an Osmonics Beverage Nano Filtration Unit. The system was experiencing high conductivity. During the change-out service plastic pieces/debris were found in the RO membranes. Upon future investigation, it was noted that the pump had broken impellers that caused the plastic shards to [...]
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1200 GPM Industrial Water Softener Replacement

February 18, 2021 · By Nathan Olszak
CWT-3000-4” Triplex Industrial Softener System Replacement (400 GPM Softener System) Complete Water Solutions supplied a triple tank softener system. The Industrial Water Softener comprised of (3) 72” Diameter x 72” Tall side shell. Each vessel was epoxy lined interior and polyurethane exterior coating. The reason the exterior coating was selected is to help with exterior [...]
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Softener Using Too Much Salt? Industrial Softener Resin Replacement

February 11, 2021 · By Nathan Olszak
Do you think your industrial water softener is using too much salt? Complete Water Solutions can help! Take a look below at one example where we helped our clients. Complete Water Solutions performed a resin rebed recently on a triplex industrial softener. What prompted this rebed was the increased salt and water usage due to [...]
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Osmonics Reverse Osmosis E8 Lakewood Controller Replacement

February 4, 2021 · By Nathan Olszak
  E8 Lakewood Controller Replacement Osmonics RO Systems from about the mid 90's and earlier were equipped with Lakewood Controllers and Allen Bradley Micrologix 1000 PLC Systems. These products have been obsolete for years and parts to repair them are scarce to non existent. Complete Water Solutions offers 2 options to upgrade the Osmonics Lakewood [...]
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Osmonics E8 Lakewood 2450 Controller Upgrade Lakewood Replacement

January 28, 2021 · By Nathan Olszak
Complete Water Solutions is an expert in RO Systems and when it comes to Osmonics branded Reverse Osmosis Systems, we have extensive knowledge in operations, controllers, and Tonkaflo pumps. Since before the Mid 2000’s, Osmonics was using a combination of the Lakewood 2450 Controller and Allen-Bradley Micrologix 1000. Since then, both the Lakewood 2450 Controller [...]
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President Of Complete Water Solutions Helps Fight Covid-19

January 24, 2021 · By Nathan Olszak
Emily Olszak President of Complete Water Solutions announced during the annual meeting that she would be taking a temporary leave (a few days a week) to help administer covid-19 vaccinations (volunteering). Emily’s career prior to Complete Water Solutions spanned over a decade as a Registered Nurse. Emily is grateful for the opportunity to volunteer to [...]
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Fleck 3150 Carbon Filter – Carbon Replacement – Carbon Re-Bed

January 21, 2021 · By Nathan Olszak
Carbon Filter Replacement Complete Water Solutions performed a carbon re-bed on a fleck 3150 Tank. Carbon filter in this application is used to remove chlorine prior to a Reverse Osmosis System. Chlorine will damage most RO membranes so having a carbon filter will help prevent that. The customer had chlorine bleed through which prompted the [...]
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Josh Completes RO Specialist I Course & Received Certificate

January 14, 2021 · By Nathan Olszak
RO Specialist Course I Completion! We are excited to announce that Josh. completed David H Paul’s RO Specialist I Course and received his certificate. Josh started with Complete Water Solutions 10 Months ago and has demonstrated his passion for Industrial Reverse Osmosis Service. Help us in celebrating Josh success. One of Complete Water Solutions’ core [...]
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Water Softener Resin Inside An RO System

January 7, 2021 · By Nathan Olszak
Water Softener Resin Inside RO System Recently Complete Water Solutions was called out due to a RO system having quality and pressure issues. Upon further investigation, we found that there was water softener resin inside the RO System. This resin came from the recently newly installed softener systems. The contractor broke the lower distributor (internal [...]
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Reverse Osmosis (RO) System w/ DI System 1.25 GPM

December 31, 2020 · By Nathan Olszak
Reverse Osmosis (RO) System Need A Water System? Contact Complete Water Solutions info@complete-water.com www.complete-water.com   Customer - Thermal Forming Location: United States (Midwest) Water Application: This water is used in the thermal forming R&D Process. The purity requirements are 1 Meg Ohm or better to help prevent scale forming in the process. Current Situation – [...]
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Tonkaflo Pump SS1823XB Replacement – Reverse Osmosis E4-1100-DLX

December 25, 2020 · By Nathan Olszak
www.complete-water.com/tonkaflo-pump (Download Tonkaflo Pump Manuals and more) TonkaFlo Pump Replacement Recently Complete Water Solutions was called out to replace a Tonkaflo Pump model SS1823XB commonly found on the E4-11000 & E4-13200 Reverse Osmosis Systems. The pump is one of the primary pieces of equipment on the RO System that are critical to the production of [...]
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Emergency Softener Tank Replacement – Tanks In Stock

December 17, 2020 · By Nathan Olszak
Complete Water Solutions can help with an emergency softener tank replacement. Equipment: Duplex Softener System Model Number: Fleck 3900 Twin NXT 900,000 Grain Capacity Scope: Temporary Fiberglass Softener Tank Complete Water Solutions was recently called out when a 20-year-old fiberglass softener tank cracked and sprung a leak. This caused the customer to send hard water [...]
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