National Prevention Week National Prevention Week (NPW) is a public education platform that promotes prevention year-round through providing ideas, capacity building, tools, and resources to help individuals and communities make substance use prevention happen every day. NPW culminates in May recognizing the important work that has been done in communities throughout the year to inspire action and prevent substance use and mental disorders. SAMHSA’s next NPW is May 10 through 16, 2020. Each year around this observance, communities and organizations across the country come together to raise awareness about the importance of substance use prevention and positive mental health. Send questions and requests to SAMHSA's NPW coordinator David Wilson at email@example.com. Learn more about National Prevention Week.