

Serious answer: the actually wealthy are too good at tax dodging, so taxing them is rarely effective, plus they can scare governments by threatening to fly their private jets to some other country if they were actually threatened with effective taxation.
I’ve heard it claimed that the only effective way to run a wealth tax is to do a single massive one off tax with no warning or lead time, that way the cockroaches wealthy can’t run and hide in the woodwork quickly enough.

In this country our sewage and drainage are largely combined in the same sewers (we built the system before anyone had the idea of separating them, and now can’t afford to fix it), so hard to believe it could cause any problems, probably just improved the flavour of the broth a little