Criminal justice clients in Billerica often end up in alcohol and drug treatment facilities because they were convicted of drug related crimes, whether they were dealing drugs or were in the possession of or found to be high on drugs. Some courts put these types of persons into the drug and alcohol treatment system because they consider that rehabilitating these individuals is more helpful for society and for the person, rather than putting them behind bars with no treatment at all. This has been established to be extremely effective not only in helping and rehabbing this type of client in Billerica, but also in helping them stay sober and in many situations out of the criminal justice system permanently.