Take advantage of available A/C power to receive water level change notifications: float sensor sends an alert when it rises or falls, depending on your requirements.  

This A/C powered edition is a complementary product to our battery powered water level detector. It continuously monitors water level changes and sends text and email alerts when high or low thresholds are exceeded.

Plugin Water Level Alert comes with a waterproof float sensor with a 5 ft wire and a mounting bracket for easy installation.

For more details and to order one see here.