I used to mix 2 1000 liter totes like that with nutrients to grow weed in an automated hoop house lol… I’ve seen pics on Pinterest of people making showers out of themLined dual-wall hoses- no leach.
The food grade 1000 liter metal-frame palleted “totes” are good. I have one on a little trailer. ~175 gallons maxes it out.
I used one for years. I should be using it this year but I’m driving by one of three nearby springs on my way home all the time and I’m still doing 15gal at a time.