Beginning in mid-2019, many Washington wineries will need a permit from the state Department of Ecology (“Ecology”) to discharge wastewater. Ecology issued the state’s first five-year Winery General Permit (the “permit”) on May 17, 2018, but delayed its effective date until July 1, 2019. The new permit will regulate discharges of process wastewater from wineries to land, groundwater, and wastewater treatment plants. No surface water discharges will be allowed under the permit. Ecology has not determined how much a permit will cost, but the new rules in the permit will add financial burden to businesses and may hinder the growth of small wineries.

Ecology decided to develop the general permit due to the rapid increase of wine production in Washington. However, according to Ecology’s Fact Sheet, wineries have not been a “major source” of pollution in Washington. Although Ecology stated in one of the agency’s Responses to Public Comments that “it was unable to find documented evidence of a Washington winery polluting groundwater,” it maintained that “a lack of evidence does not mean groundwater is not being impacted.”

The new permit will apply to wineries that discharge at least 53,505 gallons of wastewater or produce at least 7,500 cases (17,835 gallons) of wine or juice per calendar year. More specifically, wineries that meet the above threshold numbers will need the permit if they discharge wastewater according to one or more of the following methods: (1) to a wastewater treatment plant that is not listed; (2) as irrigation to managed vegetation; (3) to a lagoon or other liquid storage structure; (4) as road dust abatement; (5) to a subsurface infiltration system; or (6) to an infiltration basin.
Continue Reading Ecology Rolls Out Washington’s First Winery General Permit to Regulate Discharges of Wastewater