I believe Snyder is substance free, and also super close to the ARC (recreation building). I lived there my freshman year a long time ago (it wasn’t substance free then) but it was a great option.
Oh, the other option is busey Evans. They are generally quiet ( one is male only, one is female only) also super close the other rec spcenter (crce) great location as far as quad, and I don’t believe there are frats nearby. There are a few sororities close by though.