Interview on C-Span Washington Journal on PFAS and efforts to remove them from the environment

Carsten was interviewed by C-Span Washington Journal on efforts to remove ‘forever chemicals’ from drinking water. The full interview can be found here.

ES&T Excellence in Review Award

Carsten is one of the recipients of the 2021 ES&T Excellence in Review Award.

NSF CAREER award to develop novel approaches to assess the presence of toxic byproducts in drinking water

Our lab received a NSF CAREER award for our project ’Development of a Novel Approach for the Identification of Toxic Byproducts and their Precursors in Oxidative Drinking Water Treatment. We are honored to receive the award and are excited to work on this project for the next 5 years.

Special Issue on Drinking Water Safety in Journal of Environmental Sciences

Carsten is one of the guest editors of a Special Issue in the Journal of Environmental Sciences entitled ‘Re-Imagining drinking water safety based on 21st century science: Microbial pathogens, emerging contaminants, byproducts, and health risks‘ that was published in June 2022. The special issue is dedicated to Dr. Michael Plewa to celebrate his achievements in the field of disinfection by-products and their toxicological assessment. The preface to the Special Issue is available here, the special issue can be accessed here.

Letter to the Editor in response to our recent publication on unknown organic chemicals in e-cigarette liquids and aerosols

As a response to our recent publication on the use of non-target analysis for the fingerprinting of unknown organic chemicals in e-cigarette liquids and aerosols, a group of four scientists from Juul Labs Inc., one of the e-cigarette manufacturers from which we tested a product from, wrote a letter to the editor which can be accessed here. Our response to the raised criticism can be found here.

NIEHS Environmental Factors Paper of the month December 2021

Our paper on e-cigarettes led by Postdoc Mina Tehrani was selected by NIEHS Environmental Factors as one of the papers of the month of December 2021.

Radio Interview about new vaping study on KCRW-FM’s Press Play

Carsten was interviewed by Madeleine Brand, the host of the news and culture show Press Play, on KCRW-FM, one of Los Angeles’ two National Public Radio (NPR) affiliates, about our new vaping paper. The interview can be found here.

New paper on non-target analysis for identification of unknown chemicals in vaping aerosols and e-cigarette liquid covered by Bloomberg News

The paper lead by Mina Tehrani, a Postdoc in the laboratory of our collaborator Ana Rule, which was published in Chemical Research in Toxicology, is discussing the use of non-target analysis based on liquid chromatography – high-resolution mass spectrometry (LC-HRMS) for the detection of previously unknown chemicals in e-cigarette liquids and vaping aerosols. In addition to Mina, Ana and Carsten also Matthew Newmeyer, Postdoc in the Prasse lab, was involved in the research.

Prasse Lab Wins EPA Grant for Research on Potential Risks from Pollutants Found in Biosolids from Wastewater Treatment

Carsten is the principal investigator of a new research project entitled ‘Fate and Transport of Unregulated Organic Contaminants in Biosolids – Development of a Human and Environmental Exposure Risk Framework‘. The co-investigators on the project are Keeve Nachman and Thomas Burke, both in the Bloomberg School of Public Health at Johns Hopkins. More information about the project can be found here.

Lab group get-together

New perspective article in Nature Sustainability: Reimagining safe drinking water on the basis of twenty-first-century science

Protecting drinking water is tough with an ever-expanding set of chemicals in our environment. Paul Ferraro and I propose an alternative way that leverages recent advances in bioassays, analysis of complex mixtures, and Artificial Intelligence. A free version of the Perspective article is available here.

We propose a new proactive approach (which we call MiAMIMixture, Assay, Measure, Innovate) that evaluates drinking water quality more holistically by focusing on complex mixtures instead of a small set of regulated, well-known chemicals that have been studied for decades.

Photo-essay undergraduate class project ‘Environmental Concerns’

As part of Carsten’s teaching activities, he started a new photo-essay blog project in collaboration with Kevin Mick, Professor in the Psychology Department at the Community College of Baltimore County.

This photo-essay blog represents our approach to engage students with environmental issues that are associated with anthropogenic activities in a format that is totally different from their typical experiences in the classroom. The task for participating students is to take a single picture or a series of pictures that highlight an environmental issues that is of concern to them. The pictures are accompanied with a short text paragraph that allows the students to share their personal story about the pictures and how they relate to environmental issues they are uncovering.

PhD student Veronica Wallace wins Scholarship from the Air & Waste Management Association

Congratulations to Veronica for winning the Solid and Hazardous Waste Research Scholarship by the Air & Waste Management Association (A&WMA)!

Carsten in conversation with artist Jordan Tierney on the perception of urban environments and impacts of anthropogenic activities.

Johns Hopkins Alliance for Healthier World Grant on Urban Aquaculture

Urban Aquaculture for Climate Justice and Local Food Sovereignty is headed by co-principal investigators Nicole Labruto, an assistant research professor in the Krieger School of Arts & Sciences’ Department of Anthropology, and Carsten Prasse, an assistant professor in the Department of Environmental Health & Engineering at the Whiting School of Engineering.

The project will join with the Black Yield Institute — a Black-led think tank and collective action network that addresses food apartheid — to explore the feasibility of community-led urban aquaculture on the shoreline of the Patapsco River’s Middle Branch in south Baltimore.

NSF Graduate Research Fellowship for Daisy Grace

Congratulations to Daisy Grace, first year PhD student in the Prasse lab, for winning the prestigious NSF Graduate Research Fellowship! Her proposed research will focus on the development of novel approaches for the detection of toxic organic chemicals in (drinking) water.

What Our Wastewater Can Tell Us

Carsten was featured in an article about Wastewater Epidemiology in the Johns Hopkins Magazine.

Ecological Design Collective

Carsten is part of a diverse community of researchers, designers, activists, and artists, committed to the imagination and development of alternative ecological futures. We work with the conviction that there are designers everywhere, drawing on communal traditions and practical expertise to forge other worlds of possibility.

Comedian Talks with a Public Health (Water) Expert

Carsten was interviewed by comedian Scott Rogowsky on contaminants in the urban water cycle and how they impact environmental and human health as part of a new Comedian Talks with Public Health Expert Series by the Bloomberg School of Public Health.

Signals from the Sewers

Carsten was featured in an article in the Hopkins Bloomberg Public Health Magazine on Wastewater-based Epidemiology (WBE) for detection of SARS-CoV-2 and chemical markers.

Troubled Waters

Carsten was featured in a story published by Ensia on drinking water contamination across the U.S.

Critical Review paper on Reactivity-directed analysis (RDA) featured in the media

Provost Undergraduate Research Award for Annabel Mungan

Congratulations to our undergraduate Annabel Mungan who was awarded the JHU Provost’s Undergraduate Research Award. She will be working with PhD student Veronica Wallace on the analysis of antiviral and antibiotic drugs in wastewater.

Nick Pham wins Maryland State Stockholm Junior Water Price 2020

Congratulations to our high school student Nick Pham who was just announced as the Maryland State Winner of the Stockholm Junior Water Prize! Nick will now participate in the national competition.

Our latest paper was featured in USA Today

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Provost Undergraduate Research Award for Melody Multra

Congratulations to our undergraduate Melody Multra who was awarded the JHU Provost’s Undergraduate Research Award. She will be working with PhD student Christopher Brueck on the anaerobic degradation of agrochemicals.

Lab group dinner party


Barclay School 6th Graders Campus Visit

We had a great time with the 6th graders from the Barclay School in Baltimore and talking about environmental pollution and ways of cleaning our water.


Johns Hopkins Provost’s Undergraduate Award for Rafael Ferguson

Our undergraduate student Rafael Ferguson, who is working with Zhuoyue Zhang on the fate of organic UV filters in swimming pools, received the Provost’s Undergraduate Award from Johns Hopkins University ( Congratulations Rafa!

The Academic Minute on Water Purification

Carsten was recently featured on The Academic Minute:

Research Highlighted on Johns Hopkins Hub

Our latest paper on the formation of toxic transformation products during water treatment with UV and hydrogen peroxide (Prasse et al. 2018, PNAS) was featured as cover story on the Johns Hopkins Hub. (

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Wastewater Epidemiology – A New Tool to Assess Public Health of Communities?

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Wastewater Epidemiology – China Leading the Way?

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Research Highlighted by Nature Reviews Chemistry

Our research on the formation of toxic by-products from reaction of phenols with hydroxyl radicals and UV light was highlighted in a featured Nature Reviews Chemistry article.

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