Sustainability Rombauer Vineyards views winemaking as a holistic endeavor, placing a high value on the interaction of land and community in the winemaking process. We strive to be stewards both of the land and our community, sharing in the responsibility of protecting the environment for future generations. Therefore, we use sustainable practices whenever possible in the vineyards and at the winery. Solar power provides 60% of our energy at our Napa wineries. All green waste generated from the vineyards and winery is composted and used as a natural fertilizer, returning essential nutrients to our soils. All cardboard, plastic and glass from bottling is recycled. Our water-use efficiency is unparalleled in the industry using 2.4 gallons of water for each gallon of wine produced vs. industry average of 6–14 gallons of water per gallon of wine. Water monitoring, including neutron probes, evapotranspiration sensors and pressure chambers, ensures efficient water use in the vineyard. First winery to install Cambrian EcoVolt to treat wastewater onsite Double dripper irrigation lines allow us to deliver water only to the sections of our vineyards that need it. Nesting boxes provide homes for barn owls that prey naturally on vineyard pests such as rodents and gophers. All of our vineyards are either Napa Green or Fish Friendly Farming certified by the California Land Stewardship Institute. Growing practices at these sites help protect endangered Coho Salmon and Steelhead Trout. Our Napa wineries are both certified Napa Green.