Israel’s Alumor has developed a water-purification technology based on ultraviolet LED light. Miriam’s Well (named from the Bible) is solar-powered and can purify any type of surface water. It produces water at a low price, uses very little energy and can purify a liter of water every 10 minutes.
https://nocamels.com/2021/11/alumor-miriam-well-israel-water-tech/