Hello Hymced!
For receiving any notification while on the road a home hub is mandatory. We recommend using an Apple TV 4/4K or HomePod.
Automations are created in Home or Eve and then transferred and executed on the home hub. Detecting Leak from Eve Water Guard can be a trigger for like turning on lights, turning off power in a scene. Either create an automation/rule in Eve or in Home, please don't mix in one automation but you may use both apps.
You'll get notified (alarm) once a leak is detected. Please check more on:
You may turn off the alarm in the app Eve only, not in Home from Apple.
Best, volker
Oct 9, 2020