>https://www.amazon.com/ZING-7103-RecycLockout-Valve-Lockout/dp/B0078QQZ58
That's a great solution! thank you very much :D
Maybe something like this:
https://www.amazon.com/ZING-7104-RecycLockout-Valve-Lockout/dp/B0078QQZ58
they make locks for the handles. if they can't turn the handle, they can't use the water
https://www.amazon.com/ZING-7103-RecycLockout-Valve-Lockout/dp/B0078QQZ58
https://www.amazon.com/Echaprey-Multifunctional-Anti-theft-Water-tap-Protection/dp/B07MNFLMJD