Is Z-Uno supported by Smart Things? I need a water level sensor

It is a challenging project to attempt without some knowledge of the Arduino software. I am not a programmer and have not used the Arduino before. It took at least 4 of my vacation days to get this working and fortunately @ogiewon had a massive amount of patience with me. Be warned that without some knowledge of the Arduino, it will take lots of reading; watching Youtube videos and perseverance in general.
I would suggest you start here and work through this thread as well as this one.
Unfortunately, I know too little to be of assistance to you.
Good luck!