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by war1025 2085 days ago
> Like maybe not EVERYBODY has their own well/septic, but maybe every 5 houses or whatever share one?

Anecdotally, it seems fairly common for people to have municipal water and their own septic system in more "exurb-y" areas. Two of the people I work with (different states) have that setup.

It seems to be common because water treatment facilities are more efficient at scale, whereas a septic is pretty easy to maintain yourself.