Comment by gonzalohm
One thing that shocks me as an immigrant from Europe to the US is toilets. I have not seen a single one that has the two buttons, one for pee and one for the other stuff.
Every time I use the toilet it uses 1.6 gallons. 6 liters...
I think in my home country more than 90% of home toilets are the "low water usage one" (with 3 and 6 liters buttons)
And that's only the start, I noticed that people just don't care about water usage over here. People take water from wells with little oversight. In my home country you need a vast amount of bureaucracy to be allowed to take water from aquifers
The toilet flushing thing is performative. Even if toilet water usage were enough to be worth caring about, dual flush toilets use more water over the lifetime of the toilet, because the more complex designs have a higher failure rate: https://www.theguardian.com/environment/2020/sep/29/dual-flu...
Also, in about half of the country, aquifers replenish as fast as they are used, so there's no point in regulating their use. The largest concern is usually whether or not the well is contaminated.