Many sources of calcium or carbonate ions in domestic piping (which is typically plastic copper, steel/iron or asbestos)? Nope.
Also, residence time in domestic piping vs scheme will be tiny (if you do the dishes each day, you've probably flushed the pipes at least once).
Impossible? No. But I'd be willing to bet water quality is significantly less likely to be the cause than other factors (such as how much water has passed through the boiler) in the case of two neighbors with the same mains supply...
Also, residence time in domestic piping vs scheme will be tiny (if you do the dishes each day, you've probably flushed the pipes at least once).
Impossible? No. But I'd be willing to bet water quality is significantly less likely to be the cause than other factors (such as how much water has passed through the boiler) in the case of two neighbors with the same mains supply...



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