Carignan vines grow in a Redwood Valley American Viticultural Area vineyard in Calpella, Calif., on Sunday, Sept. 3, 2023. Carignan is a black-skinned wine grape commonly used in red wine blends with Grenache and Syrah. (Sarah Stierch via Bay City News)

MENDOCINO CO., 8/15/25 — The North Coast Regional Water Quality Control Board has approved an order that recently went into effect to limit the amount of waste discharged by commercial vineyards in both Mendocino and Sonoma counties.  

The order, called the General Waste Discharge Requirements for Commercial Vineyards, is a policy designed to protect local rivers and streams, groundwater supplies and aquatic species by regulating runoff from an estimated 65,000 acres of commercial vineyards.  

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Sydney Fishman is a UC Berkeley California Local News Fellow and lives full time in Ukiah. Reach her at sydney@mendovoice.com or through her Signal username @sydannfish.67.