Wells are going dry and there are few long-term solutions available — a common stopgap has been to drill deeper wells. This is exactly what happened in California’s Central Valley. The recent drought there prompted drilling of deeper and deeper water wells to support irrigated agriculture. Groundwater supplies around the world are being threatened by excessive pumping, but drilling deeper wells is not a long-term solution. A better solution is to manage water use and avoid excessive declines in groundwater levels.