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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

18 GPM Reverse Osmosis Metal Cleaning & Cooling

September 9, 2019 · By Nathan Olszak
Complete Water Solutions recently designed, supplied and installed an 18 GPM Reverse Osmosis Metal Cleaning & Cooling to provide Reverse Osmosis quality water for a metal extrusion process. The Reverse Osmosis water was used to rinse/cool the product. Without the RO Water, the hardness minerals and TDS (Total Dissolved Solids) caused spotting on the product [...]
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Tonkaflo Pumps from CWS

September 4, 2019 · By Nathan Olszak
TONKAFLO PUMPS: NEW PUMPS AND REPAIR SERVICES Tonkaflo Pumps are multi-stage pumps built to meet your requirements for general water applications, high-temperature, or chemical compatibility. Tonkaflo pumps set industry standards for reliability and low overall life-cycle costs, you can let them work without having to worry. Tonkaflo world-class pumps come with stainless steel shells on [...]
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Osmonics Pro Series Reverse Osmosis

August 25, 2019 · By Nathan Olszak
Osmonics Pro Series Reverse Osmosis Discontinued It was announced this year that the OSMO Pro Series Reverse Osmosis Line will be discontinued. They have switched over to ProFlex which allows you some customization along with some pricing reduction. Complete Water Solutions will continue to support the OSMO Pro Series Reverse Osmosis Equipment. Complete Water Solutions [...]
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Vantage RO MC10 Controller

August 8, 2019 · By Nathan Olszak
Vantage RO MC10 Controller Discontinued   Recently it was announced that the US Filter / Siemens Water / Evoqua Vantage RO Controller the MC10 was no longer going to be produced. The MC10 controller is obsolete and no longer in production. Complete Water Solutions has an alternative for this controller the CWSAL250 which is a [...]
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Municipal Iron Filter For Water Supply

July 27, 2019 · By Nathan Olszak

Complete Water Solutions provided an Iron Filtration system for a Municipality located in Virginia. The town water supply was increasing in iron getting close to being above the MCL for the town. Complete Water Solutions worked with the village to help design and supply a system that would deal with the ferrous iron. The town […]

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hemp water system, complete water solutions, industrial hemp water treatment

Hemp Farming Water Treatment

July 5, 2019 · By Nathan Olszak
Water Treatment For Hemp? First, let us start off with this disclaimer – Complete Water Solutions does NOT condone the use of illegal substances and this particular client is growing hemp for hemp products, such as Hemp Protein Powder. At Complete Water Solutions, we have completed some interesting projects over the past year – Library [...]
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100 gpm reverse osmosis, polishing softener, complete water solutions

100 GPM Reverse Osmosis w/ Polishing Softener

June 24, 2019 · By Nathan Olszak
Complete Water Solutions was asked to provide a 100 GPM Reverse Osmosis System with ancillary equipment. The RO System is being used to provide feed water to the boiler system. The boilers are high-pressure steam boilers requiring low conductivity, low hardness, along with low silica levels. First complete water solutions to a water sample for [...]
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Dealkalizer Replacement At University

June 12, 2019 · By Nathan Olszak
Dealkalizer Replacement with Another Dealkalizer? Complete Water Solutions recently worked on a  Dealkalizer Replacement At a University. A few years ago a customer was looking at replacing their dealkalizer with another dealkalizer unit. This application was for boiler feed water make up. In most cases today we typically would replace a dealkalizer with a Reverse [...]
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Alternative To Lowering Cooling Tower pH, complete water solutions

Alternative To Lowering Cooling Tower pH

June 2, 2019 · By Nathan Olszak
Complete Water Solutions was tasked to assist a customer with alternatives to lowering the cooling tower pH to meet the state DNR discharge limits. Cooling Tower pH Solution Current situation: The customer had several cooling water loops and towers that are all tied together. The cooling water is used to cool metal treating and forming [...]
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Fleck NXT or NT Controller Upgrade To NXT2

May 25, 2019 · By Nathan Olszak
Complete Water Solutions was recently asked to rebuild a Fleck 3900 NT Industrial Water Softener System. One of our recommendations was to upgrade the controllers on the softeners. The customer had the original NT digital controllers on the softener system (2 generations back). Upgrading the controller on a pre-scheduled plan can help with preventing an [...]
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Magnum Carbon Magnum Softener, complete water solutions, ro pretreatment

RO Pre-Treatment Change From Chemical To Mechanical

May 7, 2019 · By Nathan Olszak
RO Pretreatment: Chemical to Mechanical! Complete Water Solutions was called out to a customer in Missouri regarding problems with their paint line Reverse Osmosis System. The customer was experiencing excessive membrane replacements (8 Membranes 2x A Year) and had several other mechanical problems. The customer was currently using antiscalant and bisulfite After performing an onsite [...]
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uv quarts sleeves, broken quartz sleeve, Shattering Quartz Sleeves & Bulbs

Shattering Quartz Sleeves & Bulbs – Protection By CWS

April 16, 2019 · By Nathan Olszak
Shattering Quartz Sleeves & Bulbs Solutions from CWS At Complete Water Solutions, we’ve encountered cases where customers have experienced UV system quartz sleeve shattering or Shattering Quartz Sleeves & Bulbs. This issue can arise from stress fractures, improper handling, or sudden pressure changes, such as water hammer events. When a quartz sleeve shatters, it can [...]
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