Also, after reading the article:

> But some of those agencies are walking back the rules as they make a surprising discovery: Pools aren’t the water wasters some have made them out to be.

So I insist: it isn't a large waste. It's a politically motivated move, and therefore a dogwhistle.

I believe it would be better to invite pool owners to reduce evaporation by adopting a system to cover the pool, than to shame them: otherwise, we should shame people having a lawn (and people taking a shower, and people wasting electricity on videogames...)