Thanks so much for providing all this useful info. I have a question on how I can wash the car when there's "hard water".
The last time I washed it it was cloudy and when the sun unexpectantly came out it dried up some of the water. There are now "water spots" that don't want to come off the paint.
I'm planning on detailing the car using a series of steps, but my main question is how can I wash my car in the future using this water supply? Are there ways to reduce the effect of "hard water" during car washes?