18-Year-Old Builds Garage Microplastic Filter That Outperforms Municipal Water Treatment
An 18-year-old from Virginia built a garage microplastic filter that removes 95.52% of particles at 87% reusability, outperforming municipal water treatment plants.
18-Year-Old Builds Garage Microplastic Filter That Outperforms Municipal Water Treatment An 18-year-old from Virginia built a garage microplastic filter that removes 95.52% of particles at 87% reusability, outperforming municipal water treatment plants. Aaron Rafferty April 03, 2026 Key Takeaways: Mia Heller , an 18-year-old from Virginia, won an ISEF award for a microplastic filtration system using ferrofluid and magnets that removes 95.52% of microplastic particles from water. The filter achieves 87% material reusability, making it both effective and affordable compared to existing municipal treatment infrastructure. Microplastics have been detected in human brain tissue, blood, and organs, and no standardized affordable detection or removal method currently exists at consumer scale. Mia Heller, an 18-year-old from Virginia, built a microplastic filtration system in her garage that removes 95.52% of microplastic particles from water. The system won an International Science and Engineering Fair award and already outperforms municipal water treatment plants at a fraction of the cost. The design uses ferrofluid, a magnetic liquid, combined with magnets to attract and capture microplastic particles suspended in water. The materials achieve 87% reusability, which means the filter can be cleaned and reused repeatedly without significant performance loss. That reusability is what separates it from industrial filtration systems that require constant replacement of expensive membranes. The context makes the achievement sharper. Microplastics have been detected in human brain tissue, blood, and organs. No standardized consumer-level removal method exists. HHS Secretary RFK Jr. just announced a $144 million STOMP program through ARPA-H to develop detection and removal tools, tar