Because water is life, and also because we're trying to avoid a dystopian future where we're all stuck drinking from a single, giant, radioactive-tinged toilet, we've compiled a list of ancient civilizations' water purification methods that'll make you wonder how we ever managed without the internet.
Used by the Egyptians, these filters were basically just sand in a box. Like, literally. You'd dig a hole, pour sand in it, and... voilà! Clean water. It's not exactly the most efficient method, but hey, when you're building the Great Pyramid, you don't have time for fancy.
Used by the Romans, boiling was a real "hot" method. Just heat up that water and let the impurities burn off like your aunt at a family reunion.
Sedimentation was a favorite among the Greeks. They'd let the water sit, and the impurities would... well, sit with it. It's like the ancient version of "let it sit for a few hours and hope it gets better."
Used by the Chinese, distillation was all about separating the good stuff from the bad stuff. Like a water-themed game of musical chairs, but without the chairs.
Distillation: The Ancient Chinese Method