Ecofiltro
Ecofiltro's filtering unit is genuinely plastic-free - fired clay, sawdust that carbonizes into activated carbon, and colloidal silver - and its spigots are stainless steel. The catch is the container: Ecofiltro sells it in ceramic, enamelware, and stainless versions, but also plastic (polypropylene) ones, so a plastic-free build depends on choosing a non-plastic vessel. The brand is best known in plastic-free circles as a ceramic-pot option, but performance for microplastics and PFAS is not documented, and the ceramic requires regular cleaning to avoid harboring bacteria.
How clear are their specs?
States the filtering unit is clay, carbon, and colloidal silver, and that spigots are stainless, but sells the container in several materials (including plastic) and does not publish microplastic/PFAS reduction data.
Products to avoid
Documented so you know what to skip — each still has a full breakdown and sources.