Show how to identify and mitigate corrosion of copper tube and fittings in domestic waters. The seven sources of corrosion are discussed: solder-flux-induced pitting attack, hydrogen-sulfide-induced pitting attack, erosion corrosion, cuprosolvency, concentration-cell corrosion, chemistry-related hot- and cold-water pitting. Reprint. BSE Boiler Systems Engineering, June 2005.