And the answer:
"According to Seattle Public Utilities, they will recycle broken bongs regardless of whether there is resin in them. However, Rodd Pemble, recycling manager for Sanitary Services in Bellingham, says bongs are not accepted for curbside pickup."
"His rule of thumb for recycling glass: if it's purchased from a […] store holding food or beverages, it can be recycled. Anything else […] should be thrown away."
Source: http://www.thenorthwestleaf.com/pages/articles/post/broken-bongs