Purchasing these has made my water worries a lot less likely. This particular maker, Guardian by Elexa, is available on Amazon for $399 and has three sensors. You can place the sensors anywhere you may have a water problem. Under the hot water tank, washing machine and kitchen sink are my targets.
A small investment for piece of mind. Possibly a reduction in your home owner's insurance too.
https://youtu.be/tOZ-qfh2C5I