The Plan
The crisis is real. The science is documented. And the tools to fight it are already being built — by teenagers in garages and classrooms who decided not to wait for the institutions to catch up.
The standard response to environmental contamination crises is to wait — for regulatory action, for industry cooperation, for funding cycles to align. For microplastics, that wait could span decades.
But something unusual is happening. The solutions to microplastic contamination in water are not waiting in a corporate lab or a federal grant pipeline. They are emerging from high school science competitions, from university studies on common vegetables, and from the basic principle that nature already knows how to bind and remove things the synthetic world created.
What is missing is not the technology. What is missing is the will to scale it, fund it, and mandate the regulatory framework that makes it universal.
Mia Heller
Age 18 · Kettle Run High School & Mountain Vista Governor's School · Warrenton, Virginia
Regeneron ISEF 2025 Finalist · Patent & Trademark Office Society Award ($500)
95.52%
Microplastics removed
87.15%
Ferrofluid recycled
The Problem She Solved
Mia Heller grew up in Warrenton, Virginia, where local water quality testing had revealed contamination with PFAS and microplastics. When the article noted that government agencies would not provide funds for remediation — that it was "up to people to provide their own filtration" — Heller took that as a design brief.
Her family's existing filtration system required constant membrane replacement — expensive and labor-intensive. She set out to build a filter without membranes. What emerged was a self-recycling ferrofluid system.
"It inspired me to design a filter without the use of membranes, to decrease the costs and maintenance needs associated with water filtration." — Mia Heller
How It Works
Module 1 — Water Chamber
Holds approximately 1 liter of contaminated water. The ferrofluid enters here to begin binding with microplastic particles.
Module 2 — Ferrofluid Reservoir
Stores the magnetic oil (ferrofluid). This reusable liquid selectively binds to microplastic particles as water flows through — no solid membrane required.
Module 3 — Magnetic Separation
A magnetic field pulls the ferrofluid-bound microplastics out of the water in a closed loop. The ferrofluid is recovered and reused — eliminating the need for periodic filter changes.
The system is approximately the size of a standard bag of flour. Heller developed a custom turbidity sensor to precisely measure removal efficiency. Traditional drinking-water treatment removes 70–90% of microplastics; her prototype removes 95.52%.
↗ Smithsonian Magazine — March 2026The Hillcrest High Team
Hillcrest High School · Midvale, Utah
Regeneron ISEF 2025 · Tim Draper Utah Entrepreneur Challenge — 2nd Place ($5,000)
Team Members
What Motivated Them
The team was motivated by the landmark 2024 NEJM study by Marfella et al., which found microplastics embedded in arterial plaque of surgical patients — and showed those patients faced four times the cardiovascular risk of those without. They decided to build a solution that could work at scale in open water bodies, not just household filtration.
The Device
Their invention: a portable, boat-shaped purifier designed for deployment in rivers, lakes, and reservoirs. The system uses:
- Semi-permeable membranes for initial filtration
- Organosilane surface chemistry to bind microplastics selectively
- High-speed suction pump for throughput
- Arduino + Raspberry Pi control system for autonomous operation
Awarded at the University of Utah Lassonde Institute (Tim Draper Challenge) and recognized at Regeneron ISEF 2025.
Why This Matters Beyond the Prize
Mia Heller's filter addresses the household and point-of-use problem. The Hillcrest team addresses the source — contaminated open water bodies. Together, they represent a full-stack approach to the same crisis: filtration at the tap, remediation at the source.
Both were built by teenagers with school resources, motivated by peer-reviewed science they read themselves. Neither waited for a government program. Neither needed a corporate budget.
What they need now is institutional support, manufacturing investment, and regulatory mandates that make these technologies standard rather than exceptional.
Okra & Fenugreek
Tarleton State University · ACS Omega · Published 2025
Researchers at Tarleton State University in Texas published a study in ACS Omega showing that plant extracts from okra and fenugreek can attract and remove up to 90% of microplastics from ocean water, freshwater, and groundwater.
The mechanism: polysaccharide gels extracted from each plant act as natural flocculants — binding to microplastic particles and causing them to clump and separate from the water. Critically, these extracts are biodegradable, nontoxic, and inexpensive — a direct alternative to polyacrylamide, the synthetic chemical currently used in water treatment.
"Conventional wastewater treatment using inorganic and organic polymeric solutions are non-biodegradable and toxic to ecosystems. Plant-derived polysaccharides can provide a highly efficient, nontoxic, and eco-friendly substitute to synthetic solutions."
— Tarleton State University research team, ACS Omega
🥒 Okra Extract
67%
removed in 1 hour (lab)
80%
in ocean water (field test)
Okra polysaccharide gel extracted overnight, dried to powder — 1g per liter of contaminated water. Best performance in saltwater environments.
🌿 Fenugreek Extract
93%
removed in 1 hour (lab)
80–90%
in groundwater (field test)
Fenugreek seed gel polymer extracted and dried. Superior performance in groundwater. 1:1 mix with okra performs best in freshwater.
What You Can Do Now
REDUCE Reduce Exposure at the Source
- → Use a water filter rated for microplastics (reverse osmosis or 1-micron absolute)
- → Avoid heating food in plastic containers — heat accelerates leaching
- → Use natural fiber clothing where possible; wash synthetics in a Guppyfriend bag
- → Reduce single-use plastic — especially in food contact applications
- → Boiling tap water can reduce microplastic concentration by up to 80% in hard water (Environ Sci Technol Lett 2024)
DEMAND Demand Regulatory Action
- → The U.S. has no drinking water standard for microplastics — demand one from the EPA
- → Support plastic reduction legislation at the state and federal level
- → Push for extended producer responsibility — manufacturers should fund cleanup
- → Support mandatory microplastic testing in municipal water reports
- → Advocate for school science programs that fund environmental innovation
SUPPORT Support the Innovators
- → Mia Heller is seeking professional validation and eventual commercialization — follow her work
- → Science fairs like Regeneron ISEF and the Tim Draper Challenge (Lassonde Institute, University of Utah) fund exactly this kind of innovation
- → Share stories of youth-driven environmental solutions — they compete against despair narratives
- → Advocate for school funding of environmental science programs
SCALE The Gap Between Proof and Scale
Mia Heller's ferrofluid filter works at one-liter scale. The Hillcrest boat purifier works in open water. Okra and fenugreek extracts work in lab and field conditions. None of these are at municipal scale.
The gap between "we proved it works" and "every municipal treatment plant uses it" is primarily a political and investment problem — not a science problem. Closing that gap requires exactly the kind of advocacy this site exists to support.
An 18-year-old in Virginia built a filter that removes 95.52% of microplastics from drinking water using a magnetic liquid and no disposable membranes.
Six teenagers in Utah built a portable boat-shaped purifier that works in open waterways — and won a national science competition with it.
Researchers found that the okra growing in fields across the American South can extract 80% of microplastics from ocean water with no synthetic chemistry required.
The solutions exist. What they need now is you.