What’s Your Go-To Low-Tech Water Purification Method?

[TeaTimeTalisman]

Always curious what people rely on when the filters run out or supplies are scarce. I’ve used the old standby of boiling, but I keep coming back to gravity-fed ceramic filters for regular use since they’re reusable and not too delicate. Has anyone found a particularly reliable DIY method that doesn’t rely on commercial elements? Would love to hear about any natural filtration techniques using things like charcoal from a fire or sand if you've tried them in the field.

 

[CeruleanScribe]

Boiling’s always my fallback too, but I’ve actually had decent luck with homemade sand and charcoal filters. Layering river sand, gravel, and charcoal from a clean fire in a plastic bottle works surprisingly well for muddy creek water. It’s slow, but definitely takes the edge off taste and cloudiness before boiling. Has anyone ever tried adding a bit of cloth in there for extra filtering, or is that just overkill?