I would like to see analysis of microplastics from water filters. Water filters frequently use a very fine plastic mesh as their filter medium (eg. 'melt blown

I would like to see analysis of microplastics from water filters. Water filters frequently use a very fine plastic mesh as their filter medium (eg. 'melt blown 5um polypropylene sediment filter'). I would expect that to give off a rather large number of particles the first time water is passed through it, and perhaps a good amount on an ongoing basis too since the mesh will flex with varying water flow. Since people wanting to avoid pollution are likely to have water filters installed, it seems important to know how much pollution they are adding to the water they are trying to clean.