ALarm when water goues under a given level

[Modesty]

@PaulRB

You posted your question in the "using Arduino" forum section. Do you plan to use an Arduino? If this is all the circuit will do, it would be a waste of an Arduino, I think.

Thanks @PaulRB
Correct it can be done without Arduino, but I will send result to home assistant that generates an alarm.

I was hoping that someone of you could confirm my transistor system will work with water, my system will work as a cable finder, but not sure if it will amplify a water "disconnect"

Really good idea to use PULLUP to avoid corrosion