I had ADT security with their water sensors and no shut-off capability.
I now have Ring water sensors and a wireless shutoff I control with Alexa. I could use IFTTT to connect these 2 systems but I’m content with pressing a button in Alexa to turn that valve when/if Ring calls me.
I see this integration down the road with Ring, but meanwhile do this now. It’s one of the biggest values Ring provides.