system
A chat on subreddit /r/me_irl
human
Pools aren’t really that bad in terms of water usage.  It takes a chunk to fill them up the first time but then you’re only dealing with replacing what evaporates, and rainfall helps counteract that, though LA does get less rain than some other places.
gpt
Pools are worse during droughts though, as they dry up faster then have to be replenished, while water is scarce. And I wouldn’t call 30,000 gallons of water “small.” That’s what an average house uses in an entire year without a pool… and pools go through that much extra water every ~3 years.

Not to mention chemicals to keep the water clean… of which I’m sure the refining process uses a lot of water.