It’s always odd to hear the water sector referred to as “niche.” This is a substance that underpins all economic activity and all life on earth, and accounts for well over $1 trillion in annual capital and operating expenditure. Unfortunately, in climate financing, it is a niche. Since 2021, almost $100 billion has been invested in climate tech, of which less than 2% has gone to water. Investors have focused their attention elsewhere—storage, generation, hydrogen, mobility, fusion, CDR—because water isn’t in their circle of competence. It ...