We have a newly built house that has had blue/gree water staining since month #2. We’re on a city water system and none of our neighbors have this problem. We had the water tested – ph is normal at 7.0; but the copper content ranges from 1.5 to 15 (!). The builder, electrician and plumber have checked and rechecked the grounding of the pipes coming into the house, the refrigerator and whirlpool tub grounding, the box coming into the house… but they’re at a loss as to what to look for next. In the meantime, we’re living on bottled water. I’m concerned first about our health and possible future copper pipe corrosion (I’ve read about pin hole problems). Any suggestions? Any future problems I should be on the lookout for. Thanks much.