Quote Originally Posted by endo..jay
bongs filter out the some shit but not thc...thc is not water soluible so it is not broken down in the water...the only thing that would effect thc is certian kinds of alcohol

Actually, there have been scientific studies proving that the water filters out more THC than it does tar and other chemicals. That said, THC does not absorb into water very well so not all that much THC gets filtered out, but its still more than the amount of tar thats filtered out.

~Matt