Microfiltration (MF).
https://www.emergency-wash.org/water/en/technologies/technology/microfiltration-mf
👉🏼 PDF: https://app.box.com/s/afilcqbefhepub8uaz7587e7oxm1rgdm _ Microfiltration (MF) membranes provide excellent filtration with low final water turbidity (typically less than 0.1 NTU) and high removal levels for pathogenic protozoan cysts/oocysts, Giardia and Cryptosporidium and bacteria. As a final treatment step, Chlorination T.6 or Ultrafiltration T.10 as well as Nanofiltration/Reverse Osmosis T.15 can be used. MF is applicable in all emergency phases and at different scales (see H.4 for household scale).