Hey Jimbo, you ask some interesting questions.
To the best of my understanding, model codes intentionally avoid specific prescriptions.
If it helps you at all, the Ontario building code can be found online:
Section 7 is based upon the NPC 2005 (National Plumbing code of Canada 2005), although this should soon be superseded by the NPC 2010.
Of specific interest to you may be section 184.108.40.206. "Sumps or Tanks."
This, to the best of my knowledge, is just about the extent of code governance of sump pumps as per the NPC.
Though there is also:
(220.127.116.11. "Withstanding Pressure" states a forcemain must be able to withstand 1.5 times max possible pressure.)
(18.104.22.168. Venting of Sanitary Sewage Sumps - Every sump or tank that receives sanitary sewage shall be provided with a vent pipe )
...and maybe a couple others.
Section 8 covers private sewer systems.