Ceramic Water Filter Wall Thickness: The Flow and Pathogen-Removal Trade-Off and a Thickness That Meets Both Targets

This paper addresses households that need a ceramic pot filter which both flows fast enough to be used and removes enough bacteria to be trusted. It presents a filter wall-thickness rule that satisfies a flow target and a removal target at once, derived entirely from stated assumptions and a computation whose code and full output accompany the paper. The sweep covers filter wall thickness from 6 to 18 mm. The headline outcome is: thinnest meeting x 12; flow at thinnest 1.67; lrv at thinnest 3.36; flow at 6mm 3.33; lrv at 6mm 1.68; lrv at 18mm 5.04; flow at 18mm 1.11. These figures identify a specific operating point or bound that a workshop can apply directly, and they also show how quickly performance deteriorates away from it. No kiln was built, no ware was fired, and nothing was measured for this study. SIMULATED, NOT MEASURED.