That would be weird.
First gold in the drinking water.
Then the big one blows.
Actually I am puzzled how any normal municipal water plant managed to have gold flakes get past its particulate filters.
Depends upon the state regulations and if it is groundwater or surface water.
If the water supply system has filtration, I think I’d focus on capturing the backwash and see how often the filter media is changed out.
Next, all your sewer manholes will probably get free inspections.
“Actually I am puzzled how any normal municipal water plant managed to have gold flakes get past its particulate filters.”
Whitehall? Municipal water plant?
It’s all well water there. Not very municipal unless you are a cow.