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

Fleck 3150 Carbon Filter – Carbon Replacement – Carbon Re-Bed

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 [...]

Josh Completes RO Specialist I Course & Received Certificate

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 [...]

Water Softener Resin Inside An RO System

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 [...]

Reverse Osmosis (RO) System w/ DI System 1.25 GPM

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 – [...]

Tonkaflo Pump SS1823XB Replacement – Reverse Osmosis E4-1100-DLX

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 [...]

Emergency Softener Tank Replacement – Tanks In Stock

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 [...]

How to Make Deionized (DI) Water

Temporary Deionized Water Systems Provided By Complete Water Solutions When you don't want a permanent Deionized Water system a temporary one can be a cost-effective option. Complete Water SOlutions can help you make deionized water! Temporary DI Water systems can be hooked up using temporary hoses and using exchange tanks. This process can make for [...]

How To Rebuild Industrial Softener & Resin Replacement

In this post, we dive into how to rebuild industrial softener valves and replace the resin. Complete Water Solutions worked on rebuilding the valves. These valves are diaphragm valves manufactured by AQ Matic also known as Aquamatic. The 2 valves on this unit were 428 Valve (4") and 424 (1.5") Valve. When rebuilding these valves [...]

When Should I Replace My Membranes?

  One of the most common questions we get is, "when should I replace my membranes?" We can help! In this video, we discuss how long RO membranes last and when you should change them. We also discuss cleaning RO Membranes. Need Help With Membrane Cleaning or Have Questions? To learn more about RO Membranes [...]

How To Install Reverse Osmosis Membranes

  Are you wondering how to Install Reverse Osmosis Membranes? The experts at Complete Water Solutions can help! This video is discussing how to install RO Membranes and the various differences in end caps. RO membranes are easiest installed when they are loaded in the direction of flow. Knowing which way the water is flowing [...]

Reverse Osmosis Membrane Cleaning – What should I Use?

Do you know you need Reverse Osmosis Membrane Cleaning, but you're not sure what to use to clean the RO membranes? Complete Water Solutions can help! In this video we discuss a few chemicals we use to clean RO Membranes. Getting the best RO Cleaning or RO Membrane Restoration service/outcome really begins with looking at [...]

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