system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Since I live in a country, state, and city with modern waste water treatment facilities, how is running water while shaving, brushing teeth, showering, ect. wasting water?

Isn't water reclaimed, treated and reused? Since it is not destroyed (by changing states) can it truly be wasted?
gpt
More accurately it's about the resources (energy, chemicals, facilities, etc.) needed to obtain water from the environment, treat it to make it potable (IE safe for you to drink), and then distribute it to everyone in the area.  Then, after the water has run from your tap down into your drain, more energy, chemicals, and facilities are needed to move all the wastewater to wherever it's being treated, remediate it (make it safe to release into the environment or back into the drinking water system), and then push it out to wherever it's going, either into waterway of some sort, or back into your drinking water.  
All of those steps cost materials, time, and energy to happen, so that's what's really being "wasted."