A method and apparatus for treating wastewater. A drain emanating from a substantially circular opening in a basin, sink or tub is provided with a substantially cylindrical member releasably connected to the basin, sink or tub. According to aspects of the present disclosure, shared data, user data, temporary files, paging files, the password hash that is stored in the registry, and data stored on removable media may be protected. Adjacent memory cells can then be placed closer to one another without an increase in leakage and cross-talk between adjacent memory cells. The coupling components may be attached to opposite ends of the riser sections, such as via welding.