my Township in SE PA is rural, and mostly wants to remain rural
They’ve zoned denser areas for the edges, where neighboring municipalities are denser, and where water and sewer lines exist and can easily handle new connections.
The central part of the Township has 2.3 acre minimum zoning because you need that much space for individual wells and septic systems for each dwelling.
And I think last I read about 30% of the Township is now covered by conservation easements, so it isn’t getting built on.
I used to work for the part of PA gov’t that also includes water and sewer regulators, so I did once know more than I wanted to about such stuff! (brain dump was 15 years ago!)