Welcome to Greater Columbia Accountable Community of Health! As you can see, Greater Columbia ACH encompasses a diverse geographic region of southern and southeast Washington, from the crest of the Cascade Mountains in the west to the Blue Mountains and Idaho border in the east. Our upland areas are forested while the lowland valleys of the Columbia, Snake, Yakima and Walla Walla Rivers provide an agricultural bounty to the state. How do you address the health issues in an area so large and diverse? By bringing people together who have a passion and a commitment to improving the conditions in which our citizens live, improving access to services, and understanding what the data can tell us about our population. We invite you to embark on this journey towards better health with us.