EPA Lists Microplastics as Priority Contaminant, Nephros Demonstrates 5nm Filter Capability
NEPH•Nephros showcased its ultrafiltration system featuring 5 nm pores that physically exclude microplastics (1 µm–5 mm) and nanoplastics (<1 µm), as well as bacteria and viruses. The EPA’s draft Contaminant Candidate List 6 adds microplastics as priority drinking-water contaminants, potentially boosting demand for Nephros in medical and commercial markets.
1. EPA Classification Drives Regulatory Focus
In April 2026, the EPA added microplastics to the draft Contaminant Candidate List 6 under the Safe Drinking Water Act, marking the first time plastic particles have been singled out as priority contaminants. This regulatory shift signals heightened oversight and potential future mandates for microplastic removal in municipal and private water systems.
2. Ultrafiltration Technology Capabilities
Nephros’ ultrafiltration platform employs membrane pore sizes down to 5 nm, enabling physical exclusion of particles from 1 µm microplastics to sub-micron nanoplastics, alongside bacteria and viruses. This size-based retention exceeds the capabilities of most conventional filters, offering a precision-based approach to emerging water quality risks.
3. Market Implications for Nephros
With growing regulatory and scientific emphasis on plastic particle contamination, Nephros is positioned to capture new business in healthcare and commercial markets. The company’s focus on scalable, high-performance filtration solutions aligns with a broader industry shift from reactive treatment to proactive water safety management.
