Best Low-Tech Ways to Purify Water in Emergencies?

[MeadowWhisperer]

Looking for advice on reliable low-tech methods to purify water if filters or tablets run out. I know boiling is standard, but is there a trick if fuel is running low or fire isn’t an option? Has anyone tried building a solar still or using sand and charcoal filters in a pinch? Curious which techniques folks have actually used successfully in the field, especially those that don’t require fancy gear. Any pitfalls to watch out for with DIY setups?

 

[StarlitNavigator]

Solar stills do work, but they’re really slow and don’t produce much—think maybe a cup or two a day, tops, even in good sun. I’ve had better luck with makeshift sand and charcoal filters, especially for removing visible stuff and improving taste. Just remember, those don’t