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WaterSurplus delivers sustainable water treatment solutions across industries and around the world. This includes engineering and design services, custom turn-key equipment solutions, NSF/ANSI 61 certified media filtration systems, a diverse mobile rental fleet, new OEM equipment, manufacturing, refurbishing and services such as plant optimization and membrane cleaning.

Additionally, WaterSurplus created and maintains the leading global marketplace for buyers and sellers to create value by redeploying surplus water treatment equipment.

In the News

Firefighting Foam, which commonly includes PFAS compounds, on a road with firetruck and fire fighters in background

PFAS Treatment is a rapidly growing segment of the broader water treatment industry. As a pervasive and persistent bio-accumulative man-made More

Surplus Ion Exchange Resin Inventory

In 2020 WaterSurplus recycled nearly 10,000 cubic feet of used ion exchange resin. This quantity of styrene-divinylbenzene resin equates to More

Terry Mah

Terry Mah has been named the Chairperson of its new Executive Advisory Board. Terry will work with John Barelli, President of WaterSurplus, More


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Our Innovations
Services Brands


New equipment and components from our engineers AND the leading manufacturers in the industry. Learn More

Services Rental


Large, ready-to-run fleet of water treatment equipment brings temporary or emergency capacity to your job-site. Learn More

Services Surplus


Premium used, overstock, and refurbished water treatment equipment and components. Learn More

Services Engineering


Expert and attentive engineering services from turnkey solutions to custom refurbishment projects. Learn More

Services Service


Experienced technicians for start-up, system-optimization, maintenance, and repair of industrial and municipal water treatment systems. Learn More

Services Innovation


With over 30 years of solving problems, we’ve come up with some great new solutions. Learn More

Sell to Us

Thirty Years of Investment Recovery

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Featured Assets

FilmTec SW30XHR-400i

Seawater Element 8×40
Inventory: 1150

Custom Containerized

500-680 GPM Ultrafiltration System
Inventory: 1
Call 800.919.0888 for pricing

Strainrite PRMXE0.2-30PPC8S1

30″ Pleated Polyethersulfone Membrane Cartridge
Inventory: 2988

Graver Technologies ZTEC B 0.2-30P8S

ZTEC B 0.2-30P8S
Graver Technologies
30″ Pleated Polyethersulfone Membrane Cartridge
Inventory: 240

View our Inventory

Learn more about our custom solutions to your water treatment needs. Let's Talk

The WaterSurplus Philosophy

The recruiting of subject-matter experts to the ranks of WaterSurplus has driven our careful expansion over the decades and remains our key to success in the future. While satisfied customers frequently ask us to help them address ever more complex water treatment needs, we only proceed when we have the human capital in place and ready to go. Our collaborative and innovative business model only works because of the commitment of our team to find or develop optimal solutions to our customer’s needs.

Our Team

Customers tell us that the reason they keep coming back is that we deliver superior value with every project. From innovative treatment solutions to brand-agnostic supply recommendations and investment recovery, our subject-matter experts listen to the needs of our customers, probe for information that will help them make the strongest possible recommendation, and then trust our customers to make the right decision for their needs. With access to the top brands in the world, our own innovative solutions, and the widest selection of top-quality surplus equipment, our customers know that we will help them find the very best solution.


Advancing sustainability has been a core part of our philosophy at WaterSurplus since the beginning. Be that by pushing the boundaries of water recovery in reverse osmosis, developing systems that require significantly fewer antiscalant chemicals, recycling and/or refurbishing equipment, membrane elements, and resin, or licensing catalytic filtration media that require half the footprint of a traditional media system. Our expert team is continually seeking (and finding) value for our stakeholders while pursuing more sustainable processes.


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