A Passing

[tectak]

Sorry, but I must be pedantic here -- even in the US, sewerage refers to the infrastructure through which sewage, the waste, is piped. The pronunciations are quite similar, obviously, but the fact that people are ignorant of the difference doesn't make the difference go away and certainly doesn't give anyone an excuse to choose the incorrect word.

Correct. I think it is only the vernacular peculiar to those who work in such industries that permit and indeed perpetuate the diversion from strict-dic-def which would allow "sewage" to pass. Hmm. I may rephrase that.
"Sewage pipes" is an interestingingly precious slip away from industrial language which considers nothing wrong with "water pipes" ,"gas pipes", "oil pipes" and "steam pipes"...but sewerage pipes not sewage pipes.
Enough already. I can't believe I'm having this conversation.
Best,
tectak