https://techcrunch.com/2024/03/27/wase-seed-fundraise/

Few people get as excited about wastewater as Thomas Fudge. He has good reason: he and his colleagues believe they have figured out how to turn sludge into gold.

Wastewater from places like breweries and food processing plants can’t be dumped down the drain; it has to be specially treated, a costly endeavor that often happens offsite. Fudge’s company, Wase, is offering them an alternative: treat the water on site, and get some free energy to boot.