Drug and alcohol abuse rates are higher in Washington, D.C. than in the rest of the United States. A new report from the Substance Abuse and Mental Health Services Administration found that 11.3 percent of adults were abusing or addicted to drugs and alcohol in the past year. This is well above the national average of 8.9 percent. The neighboring states of Virginia and Maryland had abuse rates of 9.4 percent and 8.1 percent, respectively. Experts believe that the easy availability of drugs and alcohol, high stress levels and the difficulties in getting addicts into treatment programs contribute to the high rates. “You can find drugs in any quadrant of the city,” said George Wheeler, the director of Circles of Hope, an addiction counseling center in Washington, D.C.