What is the name of the first bucket of water produced by the waterworks?

Specific examples are as follows:

1. "Qingyuan Water" means that water plants are the origin of water supply, providing clear and pure water.

2. "initial water": it expresses the original intention and initial heart of the water factory for the first time.

3. "newater": The water produced by the waterworks is brand-new and has vitality.