A local issue with broader reach

The project began with concerns about heavy metal contamination, including chromium, in Central Texas drinking water. Unlike bacteria, which can often be eliminated by boiling, heavy metals persist and can accumulate over time, posing serious long-term health risks.

“We identified this as a problem that needed to be solved and decided to tackle it,” Junnare said.

The team approached the issue by examining existing filtration methods and identifying a central challenge: how to create a system that was not only effective but also affordable and adaptable in different environments.

Research, testing and design

Their solution centered on biomass-based filtration, using organic materials to bind and remove contaminants. The team tested a range of materials, including orange peels, rice husks, coconut shells, banana peels, and coffee grounds, refining combinations to improve consistency and effectiveness.

Stephen contributed throughout the process, including research development, system design, and presentation preparation. She also expanded her understanding through a visit to the Lower Colorado River Authority laboratory, where she observed how water samples are prepared and analyzed using a mass spectrometer.

“Being part of ClearCaps/AquaGuardian has taught me how science and innovation can be used to solve real problems in our community,” Stephen said. “Visiting the LCRA lab and seeing how water samples are tested made the project feel even more real and meaningful.”

To safely simulate chromium during testing, the team used copper sulfate as a proxy. They developed a layered filtration system using sand, cotton, and a biomass core, refining the structure through multiple rounds of testing.

After finalizing the design, the team sought independent validation to confirm their results. Testing showed the system removed more than 99% of contaminants in controlled conditions.

“That was when we knew the concept really worked,” Junnare said. “But we also knew it had to be something people could actually use.”

From research to real-world application

That focus led to ClearCap, a biodegradable, 3D-printed attachment designed to fit standard water bottles and filter contaminants in real time.

The project moved beyond the classroom into professional settings. In addition to receiving the Austin Geological Society Senior Award at GARSEF, the team was invited to present at the organization’s annual poster session at the University of Texas’ Bureau of Economic Geology.

At the event, Stephen presented the team’s research, explained the filtration system, and answered questions from attendees, including scientists, students, and industry professionals.

“Presenting our project at UT Austin was an amazing experience because I got to explain our research and learn from others,” she said.

The work has also earned broader recognition. Junnare and Stephen were named 2026 GENIUS Olympiad finalists in the entrepreneurship category, and the team was selected as part of the 2025–26 Conrad Innovator program.

Focused on impact

Even as the project gained recognition, the team remained focused on its original goal: applying science to a real-world problem.

The project required sustained collaboration, with each team member contributing to research, testing, and presentation. For Junnare, the experience also reshaped how she defines success.

“I used to think success came from chasing awards, rankings, and recognition,” she said. “But over time, I realized it actually works the other way around. Awards and recognitions are not the goal, but a byproduct, because when you follow your passion, they come on their own.”

For Stephen, the impact is grounded in what she saw and learned throughout the process.

“This project showed me how science can directly connect to people’s lives,” she said. “That’s what made it meaningful.”