"All children should be taken by their schools to visit a factory pig or chicken farm..."

[HereSince1628]

9. yes, that's somewhat true, but peeing in the meadow

isn't quite the same as 1,000,000 households morning toilet flushes for a family of four.

Nor is mucking out stanchions in a dairy barn.

And many members of farm families balk at the notion of non-point pollution.

Population is a multiplier on all activities required for daily living. Generally speaking the scale required to meet those things are met using mechanization and pumping out the septic tank is really unlike the steps of tertiary treatment.

Similarly bacteria free water with safe levels of radium and other minerals for a city is often quite unlike moving water from a home well through a water softener and into Kool-Aid.

The infrastructure society depends upon must be understood and appreciated or people will be unwilling to pay the taxes, water bills and sewage assessments. They won't understand why storm and sewage can't drain in the same pipes. They won't understand that treated water going into a lake or river is going to be drunk by other people. And so they won't want to spend more than minimum for treatment.