I had the water tested at the store. No copper. They were very concerned about my low level of calcium though and thought I should add 18 pounds of something right away.

No heater, no dissolved hardware though the white paint on the hand rails of the steps is coming off below the water line, it's been doing that for a couple of years now.

And I realized the other day exactly what this smells like: a busy photocopy machine. It seems I notice the odor more on really humid days.

Odd.