> one essential is connection to the city sewer system for all waste, & the city
> engineers are worried about wax build up in my household sewer pipe
> (causing blockages) as a result. they don't seem too perturbed about the main
> city sewer pipes.
 
You can build what is called a 'wax trap' which will allow you to
periodically skim to remove the wax.  Set your mail programme's font
to something like Courier to look at this:
 
 
________________         |                     |
 Waste in              |
________________|~~~~~~~~~~~~~~~~~~~~~|____________Waste out               |        |                      ____________
____________   |        |                     |
            |  |        |                     |
            |  |        |                     |
            |  |________|                     |
            |_________________________________|
  (\           Nick Wallingford
 {|||8-        home [log in to unmask]
  (/           work [log in to unmask]
NZ Beekeeping  http://www.beekeeping.co.nz