At my house, we collect our AC water (free distilled water) so that we can water our plants. The issue used to be that :

1. We'd forget to empty the 15L container, allowing it to overflow and make a subsequent mess
2. The 15L container was too heavy for my parents to lift from our balcony to our roof, where the plants are.

This was my solution. The enclosure houses a simple ESP 32, an Arduino relay, and optionally an ultrasonic sensor, whilst also suspending the generic 12v water pump.
The design makes use of 5 LED's to display the current water level, and also features a pushbutton for manual pumping.
The code is very rough, however, if someone is interested I can share the files and impart any knowledge I may have.