Establishment of the Crystal Springs of Napa Valley Viticultural Area; Modification of the Calistoga Viticultural Area
TTB establishes the new Crystal Springs of Napa Valley AVA and modifies the Calistoga AVA. Wineries using 'Calistoga' or 'Napa Valley' on labels must review grape source requirements and may need to update COLA applications.
Aforeworn detected this change in the Alcohol Producers (TTB — Wine, Beer, Spirits) space on July 16, 2026 and published this briefing so affected operators are forewarned rather than caught off guard. It is rated Medium urgency. Wineries producing wine labeled with 'Calistoga' or 'Napa Valley' AVA, especially those sourcing grapes from the affected area. should confirm how it applies to their specific situation before acting. There is a time constraint attached: Labels must comply by the effective date of the final rule (typically 30 days after publication). Existing labels may have a grace period; check TTB guidance.. Acting after that point can mean penalties, a lapsed licence, or lost eligibility — exactly the kind of surprise Aforeworn exists to prevent. Aforeworn monitors Alcohol Producers (TTB — Wine, Beer, Spirits) continuously and turns every detected change into a plain-English briefing like this one, so you always know first. Forewarned is forearmed.
What changed
A new 4,000-acre AVA 'Crystal Springs of Napa Valley' is created, and the Calistoga AVA boundary is modified. This affects which grapes qualify for each AVA designation.
Who it affects
Wineries producing wine labeled with 'Calistoga' or 'Napa Valley' AVA, especially those sourcing grapes from the affected area.
What you must do
Review grape sourcing and ensure labels comply with new AVA boundaries. Submit new or amended COLA applications if needed.
Deadline
Labels must comply by the effective date of the final rule (typically 30 days after publication). Existing labels may have a grace period; check TTB guidance.
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