CycloPure, Inc.

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Evanston, IL
CycloPure, Inc.

Cyclopure is solving water contamination problems by filtering micropollutants with pioneering adsorption technologies. Dr. Dichtel is the Robert L.

Contamination of water resources by micropollutants is a global health and environmental problem, with greatest risk to infants and unborn children who are most vulnerable to the toxic loads of these chemical compounds. Advanced analytics have shown that trace organic compounds including residuals of pharmaceuticals, pesticides, detergents, and cosmetics, are persistent in water and retain toxic e

ffect at extremely low concentrations. CycloPure was formed to commercialize novel adsorption technologies pioneered in the lab of Will Dichtel at Cornell University. Letsinger Professor of Chemistry
at Northwestern University, and heads the Dichtel Research Group in the University’s Department of Chemistry. Using these technologies, CycloPure is developing a new class of highly adsorbent and sustainable materials for rapid removal of micropollutants from water. The company’s water treatment technology can be incorporated into a variety of filtration products for domestic, industrial, hospital and municipal applications, including purification and conditioning. CycloPure is also developing the technology for use in functionalized fabrics to remove volatile organic compounds (VOCs) and other contaminants from air.

07/14/2025

Following a successful 2024 pilot to test well water for 660 residents of Bailey, CO, the Colorado Department of Public Health & Environment (CDPHE) has expanded its PFAS Testing Assistance Program (TAP) across the state. The program will now offer Coloradans that use private well water free PFAS testing with Cyclopure’s Water Test Kits. Read the full release: https://tinyurl.com/mwkemdx3.

07/10/2025

You’ll want to collect these rookie cards. ⚾️ Called up for the summer league, our rookies hail from Hyde Park's University of Chicago and Wisconsin's Beloit College. They are training to hit a PFAStball out of the park water. Each a future environmental All Star.

*Note: Cheese Roll Competition involves chasing a cheese wheel down a hill.

07/07/2025

Last month, Cyclopure traveled to Europe to discuss DEXSORB® remediation and how it can be deployed to treat PFAS contamination around the world. Check out our Chief Technology Officer, Gokhan Barin, boarding the plane. We're excited to share the sustainable path we can take to a PFAS-free future with DEXSORB.

07/04/2025

Happy 4th of July to Cyclopure customers! We're taking this long weekend to relax, barbecue, and watch fireworks. We'll return to regular operations on Monday after some much needed unwinding and rockin' in the USA. 😎🇺🇸

07/03/2025

Cyclopure's Water Test Kit Pro helps Georgia residents and organizations test water for PFAS. To date, we have sold over 1,700 Water Test Kits in the state of Georgia. Our kit is helping map the extent of PFAS contamination in the state. Read more about forever chemicals in Georgia: https://phys.org/news/2025-06-toxic-threat-chemicals-resistance-georgia.html

06/30/2025

Summer traditions: baseball, barbecue, fireworks and… INTERNS! This summer, Cyclopure is hosting three interns from University of Chicago and Beloit College. They will be mentored by our Materials, Residential Products, and Environmental Engineering teams. Training the next generation of water benders!

06/27/2025

Cyclopure is at the PFAS Solutions & Resource Fair in Cadillac, MI until 2 PM today. Come to our stand to learn more about DEXSORB®, our residential filtration systems and Water Test Kit for PFAS. Play "The Golden Cup Game" for a chance to win a free Test Kit while they're still available. We look forward to meeting you!

06/10/2025

The answer is always Zero. We call it DEXSORB’s Constant: PFAS influent – DEXSORB = Zero. See Elkton MD Before DEXSORB (63.4 ppt) and After DEXSORB (0.00 ppt) test reports for theorem proof. For residential PFAS treatment, DEXSORB home filters only know zero. Cyclopure Purefast Home filters in 20k/80k/160k gallon capacity are the only drinking water filters with DEXSORB!

06/07/2025

Learn about Cyclopure's successful full-scale installations of DEXSORB®, our remediation technology at . Pictured: our CEO, Frank Cassou, holding down the booth at ACE 2024. Come say hi! We'll be waiting for you in Booth 1330 with insulated CycloMugs to hold your water this summer.

06/06/2025

Cyclopure was invited by a regional airport to install a compact, DEXSORB-loaded filter for one-time treatment of 3000 gallons of PFAS-contaminated wastewater stored onsite in an Aircraft Rescue and Fire Fighting truck. PFAS in rinsate was 93,780 ppt, with 110 ppt of PFOA. The DEXSORB PBF system operated for 12 hours over two days to treat the 3000 gallons of AFFF rinsate. PFOA was successfully removed to non-detect (< 2 ppt), allowing for safe discharge of the treated rinsate into the sanitary sewer.

06/03/2025

Cyclopure will be at this year's conference in Denver, CO. Come visit Booth 1330 at the Innovation Hub to learn more about DEXSORB®, our remediation technology. We'll be giving away insulated CycloMugs to keep your drinks cool this summer!

05/23/2025

Happy Memorial Day weekend from Cyclopure! What better way to enjoy the warmer weather than planting in the garden? 🌱

H2O Care, a MA-based water filtration provider, contacted us to design and engineer a custom DEXSORB-filtration system for a vegetable garden in Cape Cod, Massachusetts. The system is comprised of two 14"x65" vessels in lead-lag configuration with a 22 gpm flow rate. It will filter around 800,000 gallons over four growing seasons, ensuring that the garden and its veggies 🥕 receive PFAS-free water. DEXSORB makes water safe for you and your plants! 🌷💦

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Evanston, IL

Website

http://www.cyclopure.com/

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Our Story

We are a material sciences and technology company whose mission is to make drinking water safe for everyone, everywhere. We are commercializing a new class of selective and powerful adsorbents called High-Affinity Cyclodextrin Polymers (HACPs) that are uniquely capable of removing the toxic micropollutants that contaminate much of our drinking water supply and threaten the health of millions every day. These micropollutants include industrial chemicals, pharmaceuticals, and pesticides that, even at trace concentrations (parts per billion), have been linked to multiple cancers, endocrine disorders, thyroid disease, and immunotoxicity.

Because they exist at trace concentrations, micropollutants easily pass through the municipal water treatment plants which supply tap water to over 85% of the U.S. population. Many also pass through Point-of-Use water systems that millions have installed in their homes. It is the reason that some micropollutants, such as carcinogenic per- and polyfluoralkyl compounds, are now found in the blood serum of 97% of Americans.

Our invention of porous High-Affinity Cyclodextrin Polymer (HACP) adsorbents represent a breakthrough solution for the safe, rapid, and cost-effective removal of toxic micropollutants from water. Our patented technology can be easily incorporated into most water treatment applications including municipal drinking water and wastewater treatment systems, industrial water treatment facilities, and in consumer Point-of-Use water purification products.