Anybody else use well water to wash their Z? Unfortunately that's all I have access to, do you think that could have a long term effect on the paint/car?

Or am I just paranoid?

 

Just make sure you dry it quickly to prevent water spots. I've been using well water for my cars since I got here 2 years ago and it is very hard water, but I just make sure I'm careful to not let it dry on the car.