Water Level detection

Other Hardware Sensors
5

Ararawi2011:
to measure water level

and give alert when reaches specific level

One, or the other, or both.

Measuring exact water level is not easy.
Capacitive (non-contact) measurement is needed for a permanent setup.

If only one level is needed, then use a float switch.
There are also multi-level float switches.
Google it.
Leo..