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.

ERO 375 Reverse Osmosis
- Industry rated, 50 gallons per day membrane production rate, (actual production rate will vary depending on water usage and conditions).
- The filters are enclosed for cleanliness and ease of replacement.
- Changing filters does not require turning off the water, a simple 1/4 turn of the filter shuts off the water and the filter is released at the same time.
- Tested and Certified to NSF/ANSI Standard 58 by NSF International.
Options:
- Unique and elegant chrome or brushed nickel faucet styles.
- Optional electronic faucet indicates when filters and membrane need to be replaced.
- System is expandable if additional filters need to be added.
- Additional filter selections are available, including higher capacity sediment, or a Volatile Organic Compound (VOC) rated filter.
- The membrane can be upgraded to a 75 gallon per day membrane.
- Adaptor kits are available to easily add a permeate pump system, which provides improved flow rates at the faucet.
- Booster pump system available in applications where home pressure can drop below 40 PSI.
ECR 3700 Reverse Osmosis

ECR 3700 Reverse Osmosis
EcoWater’s elite water softener system is our conditioner, available in a single-tank “cabinet” design. It is highly recommended for either municipal or well water supplies.
The ECR 3700 water conditioner series comes with plenty of exciting features that ensure extended system use and protection, as well as the latest in digital water softener technology.
There’s even smartphone app monitoring, automatic salt-level detection and a water meter for allowing chemical feed dosing with switch flow operation and water usage information!
Want to learn more about Ecowater Products? Contact Complete Water Solutions today!
(855) 787-4200 or info@complete-water.com

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.Â
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. Â
Give Us A Call (855) 787-4200 or Email info@complete-water.com