There are many water pressure sensors available on Amazon, but from the reviews they are mostly junk, often failing after a few months of use.
The DFRobot SEN0257 looks promising. Operates from 0 to 290 psi (0 to 2 Mpa). 5V input, 0.5 to 4.5V output.
Wiki page for using it with an Arduino.
Youtube video
My plan is to use the SEN0257 with an ESP32 and ESPHome for easy integration with HA.