Israel’s Kando (see here previously) is helping maintain water quality for recycling or drinking in El Paso, Texas. Kando uses sensors distributed throughout the city’s sewers. They alert El Paso’s wastewater management about a possible pollution event so that they can investigate.
https://www.youtube.com/watch?v=ISnVj_jHHIU https://www.kando.eco/wastewater-quality-case-study/