It depends on where you are, I'd say. If you live in a water-rich area, water itself should be fine to use. The question is how much energy goes into heating and cleaning it afterwards though. If you live in a water-poor area, it's a different story.
edit: And the cycle is impacted as well, depending on the water flow. Here, water comes out from the aquifier, and is then entered into a river, so it is a shortcut (no spring, no small trickles that join together, and no staying within the aquifier, so the level might be lowered). If this is a problem or not depends on the specific situation.