Sell alcohol to an intoxicated person (misdemeanor)
Buy or consume alcohol in a liquor establishment while intoxicated ($1025 infraction)
Bringing Liquor in from out of State - RCW 66.12.120 Makes it illegal to bring more than 2 liters of wine, 2 liters of spirits and 288 ounces of beer into the state more than once per calendar month without paying tax and markup to the State of Washington.
Resources & More Information
The Foundation for Advancing Alcohol Responsibilty has a number of great resources available through their webpage, including tips for discussing alcohol with children of all ages, impaired driving information, and more. The "Virtual Bar" is a new tool that can help you to better understand how different factors, including food, water, and other variables, can affect your blood-alcohol concentration (BAC).