Any large music festival WILL have its share of drugs. Look at Bonnaroo, Ultra, DEMF, Lollapalooza...hell, even fucking Woodstock. You can take the music out of the drugs, but you can't take the drugs out of the music.
The real key to making this work is for the promoters to step up and become a little more conscious of what's going on inside. You can't stop everyone, nor should you for fear that the event will go deeper underground and it will become more and more illegal and unsafe.
Catalytic Souls has the right idea, I just don't think they were prepared for the numbers that showed up without presales. They had EMTs, they had First Aid stations, and I did see a fair amount of "STAFF" shirts walking around. These shows bring so many people to the area and it will only hurt everyone if they decide to ban the event.
It's all about safe, responsible fun. Look after your fellow ravers and keep track of the fucked up kids in your posse. The real tragedy is that when these ODing kids were found, none of their friends were anywhere to be seen. I know we definitely had some fucked up kid named Yoshi stumble into our campsite and we did everything we could to help him out. Hell, the kid even ralphed all over the campsite and we didn't care.
It's too bad that a few bad apples could really end up snowballing this event into something much more dangerous.