a different perspective
I live in the wettest place in the state, over 2 metres a year rainfall. (between 6 and 7 feet rainfall.) I don't know how that compares in other countries but in Australia, that is huge. We catch our own rainwater off garage and house, we always have plenty. We don't have to worry about saving water most of the year. Currently the place is waterlogged.
I recently replaced two taps (faucets) in the kitchen and laundry. I was very limited in what I could buy as I was looking for a single lever mixer tap that would turn only a fixed limited amount each way, so the tap couldn't be turned to deliver water off the sink. We needed this because our cat had two or three times flooded the place by turning the tap off the sink and turning on the tap. (bumped it when jumping around like a big kitten.) We could only find a couple of suitable taps at a reasonable price, one from Grohe for the kitchen and one from Ikea for the laundry.
Both came with little inlet hoses that were NOT removable/replaceable, and were stupid skinny little things like a drinking straw. The flow is miserable as we have low water pressure - we don't have a pressure pump, our water comes from a tank up the hill and it isn't much higher than the house. Our water supply is plenty for the washing machine to fill in a normal time, plenty to operate a tankless gas hot water service as our backup unit, but the flow though these taps is pathetic. I am more or less used to it now, but it is s-l-o-w. A litre takes about 30 to 40 seconds. It is not a flow restrictor, it is the tiny hoses and they are machined in, can't be replaced. (there was a restrictor of sorts in the aerator, but I removed that.)
as I catch my own water, no municipal infrastructure needs to be built to give me water. I just "borrow" the water briefly from the environment before returning it. But it is almost impossible to find taps and fittings that don't have restrictors that are designed for mains pressure, not low pressure.