After historic sewage spill, 911�� researchers monitor for long-term impacts with support from NSF grant

sholla4 — Thu, 24 Sep 2026 14:59:50 +0000

After historic sewage spill, 911�� researchers monitor for long-term impacts with support from NSF grant sholla4 Thu, 09/24/2026 - 10:59

On January 19, 2026, a sewer line in Montgomery County, Maryland, collapsed. More than 240 million gallons of wastewater overflowed into the Potomac River. It was one of the largest sewage spills in United States history, right in 911��'s backyard.

While a temporary fix to the pipe was completed in March and DC Water continues to actively remediate the area, questions of long-term impact to this distinctive tidal freshwater estuary system linger. The team at 911��'s Potomac Environmental Research and Education Center (PEREC) hopes to find answers.

This summer, seven 911�� researchers received a RAPID grant of $299,886 from the National Science Foundation (NSF) to investigate how the sewage spill may have impacted water quality, aquatic life, and the overall health of the estuary. Led by co-PIs Amy Fowler, associate professor and interim director of PEREC, and Jennifer Salerno, associate professor of environmental science and policy and faculty fellow at PEREC, the grant team includes environmental science and policy faculty Thomas Reid Nelson, Cindy Smith, and Rosalina Christova, as well as Brittany Hupp, assistant professor of atmospheric, oceanic and earth sciences, and Benoit Van Aken, associate professor of chemistry and biochemistry.

Students and alumni collect water samples in Gunston Cove for PEREC researchers. Photo by Evan Cantwell/Office of University Branding

One defining feature of PEREC—and the reason why this team was awarded the NSF grant—is its historical record of Gunston Cove water samples dating back to 1984. That data is invaluable in a project like this, as it gives the researchers points of comparison. And prior to receiving the NSF grant, the team was already taking samples, with support of seed funding from the College of Science, to start tracking the effects of the sewage spill as early as February 2026.

"We have 11 different sampling locations where we sample water quality and organisms each month," said Fowler. Their partners in the Potomac River Keeper Network, the Smithsonian Environmental Research Center, and others are also aiding in sampling along the river.

Water quality monitoring includes standard measures such as temperature, salinity, clarity, and nutrients. The team is including a few additional measures. Checking for traces of PFAS, the chemical used on Teflon pans, is one addition, led by Van Aken. Hupp is monitoring heavy metals.

The team is also utilizing new technology: environmental DNA (eDNA). Macro- and microscopic species leave detectable traces of DNA as they interact with and move through the environment. Through an environmental sample—such as a water sample—researchers can detect the presence of the organism in an area from their DNA and map biodiversity without needing to directly sample or see the organisms themselves, from phytoplankton to fish.

"Typically, if you have big, severe, acute disturbances like this, you'll expect to see reductions in diversity," Salerno said. "So, we're going to test that theory, as well as examine if those changes affect the food web."

Students and alumni sample the waters of Gunston Cove. Photo by Evan Cantwell/Office of University Branding

Funding for the project ends in May 2027, though PEREC's standard water and organismal sampling in Gunston Cove, funded by Fairfax County, will continue to keep building their extensive library of historic data.

A second component of the NSF grant is tying this research into teaching and outreach—a good fit for PEREC, whose key pillars include educational outreach. Findings from this research will be incorporated into the Meaningful Watershed Educational Experiences (MWEEs) program with Fairfax County Public Schools, led by environmental science and policy professor Cindy Smith. The team has also recruited more than 10 graduate, undergraduate, and high school student researchers. They will be trained in sampling, laboratory analysis, data interpretation, and science communication, and paired with graduate student mentors for additional support.

"The outcomes of this research could have a significant impact on how organizations prioritize and allocate funding in the future. In addition, the opportunity for students to gain hands-on field and/or laboratory experience through such a high-profile project would be an invaluable professional experience and meaningful addition to their resumes," said Fowler.

Students and alumni sample the waters of Gunston Cove. Photo by Evan Cantwell/Office of University Branding

Contaminated drinking water reservoirs and disease spread as a result of a large sewage spill in a public water source are, of course, top concerns. But Fowler and Salerno both note the cultural value of the river as well, and the importance of keeping it clean.

"There's been a cultural shift over the past few decades that has increased regional interest in the waterfront," Salerno added. "More and more, people want to use these water systems for recreation, which means there's growing interest in the water being clean and in conserving the ecosystem."

"The Potomac is known as the 'Nation's River' because it flows through the heart of the nation’s capital," said Fowler. "It’s history also played an important role in raising awareness about the nation’s water pollution crisis and the need for stronger protections."

The co-PIs noted that none of this work would be possible without continued collaboration and cooperation amongst the PEREC researchers and faculty.

"This grant is the culmination of years of expertise, effort, and collaboration," said Salerno. "We all specialize in different areas, with unique strengths and research backgrounds. But the river is what brings us together."

Students and alumni collect water samples in Gunston Cove for PEREC researchers. Photo by Evan Cantwell/Office of University Branding

Topics

Research

Potomac Environmental Research and Education Center

College of Science

Atmospheric Oceanic and Earth Sciences

Department of Environmental Science and Policy (ESP)

National Science Foundation

GCI-Health

Sustainability

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This meteorology student’s summer internship was a breeze

sbrown79 — Fri, 23 Aug 2024 17:30:21 +0000

This meteorology student’s summer internship was a breeze sbrown79 Fri, 08/23/2024 - 13:30

For rising senior Hanna “Bell” Tucker, an internship with the FOX 5 News Weather Department was a long shot.

“As a meteorology student, it was hard to find a media-based internship,” said the 911�� atmospheric sciences major. “[In my field] it’s mostly researching and working with data, so trying to find a position where I’d get experience with both my major and communications was really difficult.”

Many of the internship job descriptions specified that they were looking for journalism majors, said Tucker, but she was not deterred.

Tucker was eventually interviewed by FOX 5’s human resources director Murphy Baker and two weeks later was told that she had been accepted for the internship position. She has spent her summer in the Bethesda, Maryland, news studio gaining experience as a weather personality.

“I’m the only meteorology major, but they've been really helpful in showing me what to do. You just really have to take initiative there and ask questions about how you can contribute,” said Tucker, who transferred to 911�� from Liberty University.

Tucker said the College of Science course CLIM 301 Weather Analysis and Prediction, taught by Bohua Huang, a professor in the Department of Atmospheric, Oceanic, and Earth Sciences, helped her prepare for the responsibilities of her internship.

The course has two parts—a lecture session and a lab session. The lab simulation led by Professors Zafer Boybeyi and Steve Zubrick was another important resource, said Tucker.

“We would do presentations where we would screenshot the models to predict and describe the weather for the week and present them to our peers in the lab,” said Tucker. “I'd say that was my most useful experience in regards to going into broadcast meteorology.”

Bell Tucker at the FOX 5 DC studio interning as a weather personality with Tucker Barnes. Photo provided.

Zubrick, who was previously a senior meteorologist and experienced weather forecaster with the National Weather Service of the National Oceanic and Atmospheric Administration, was able to provide great insight for Tucker as she prepared to apply for internships.

“The student-led weather briefing is a major part of the lab sessions, where students lead a weather discussion with the whole class,” said Huang.

“Students learn how communicate information of weather analysis and forecasts through presentation and discussion. Weather briefing and discussion is a daily practice in many weather forecast offices, so this is great training for students in the atmospheric sciences major,” he said.

“I love attending 911��, especially because of the people that I’ve met and the [Atmospheric, Oceanic, and Earth Sciences] Department,” said Tucker.

“The biggest lesson I've learned is to try to be confident,” she added. “I put myself out there, and if I hadn’t, I would’ve never gotten this opportunity. I think just by taking small steps and putting yourself out there, it could take you a long way.”

Check out Atmospheric, Oceanic & Earth Sciences at 911��