Substance Abuse Treatment in the federal prison system works for the 210,000 inmates it houses.   Where treatment is missing is in state prisons and local jails.  Those facilities contain roughly 91% of all inmates.  If we look at the Bureau of Federal Prisons we see a model that could be used in all prisons.    Of the estimated 2.3 million inmates currently incarcerated in U.S. prisons, 1.9 million could benefit from alcohol and drug treatment, which could ultimately save taxpayers millions of dollars, according to a new report.  Currently only 11% of inmates who need treatment are receiving it during their incarceration.  Approximately 85% of current inmates could benefit from treatment, according to The National Center on Addiction and Substance Abuse (CASA) at Columbia University.   The CASA report, Behind Bars II: Substance Abuse and America’s Prison Population,” shows that 1.5 million of the estimated 2.3 million prison inmates meet the DSM IV medical criteria for substance abuse or addiction.