Napa, Calif. -- “You’re not being paranoid: You’re being watched.” That was the attention-getting start to a talk about water supply in California by Robert J. Saperstein of Brownstein Hyatt Farber Schreck LLP. Saperstein spoke Friday at the seminar “Best Practices for Owning and Operating a Winery,” held in Napa. Organized by The Seminar Group, a significant part of the seminar was devoted to water—sourcing, saving water in vineyards and wineries, dealing with authorities and the use of recycled water. It was an appropriate focus as California begins a fourth year of drought. Although this winter’s rains alleviated shortages, they haven’t ended a chronic lack of water that has gotten worse during the past century.