How can i volunteer or intern at a mental health facility and/or at drug rehab places?

i want to want to become a drug/alcohol counselor, for a intermediate carrier goal, the certificate only takes a year or so. i been going to college for 2 yrs, and this summer i am planning on taking this summer off and no class, and i really want to do some out of the box activities that i like.

: http://alcoholdrugstreatment.info/how-can-i-volunteer-or-intern-at-a-mental-health-facility-andor-at-drug-rehab-places-2