>> reporter: both locations are in new york city. this one is in harlem, the other in washington heights. here users take illegal drugs with clean supplies without risk of arrest. to be clear, they're not given illegal drugs. it's where that use drugs that are already in their possession. >> when they first come through the door, we're going to ask what they're using and how they're using it. >> reporter: it's done under the supervision of these medical profes professionals. >> this is our injection equipment and smoking equipment so they can take everything they need. >> reporter: in washington heights, the same protective protocols are in place, but here many of the trained staff are also recovered addicts like clara cardale. sam rivera is the expectation tissue director of the program. he says they have averted more than 130 overdoses sin the sites opened in november. so far rivera says no one has