Calistoga’s Castello di Amorosa invests in solar, wastewater recycling
Faced with the drought quandary in 2015, owner Dario Sattui invested $1.2 million into a wastewater reclamation system that is designed to reclaim 100% of the wastewater generated by winemaking. It uses a microfiber filtration system that renders winery waste clean enough for agricultural use. It was built underground, except for five holding tanks. (Napa Valley Register)