Water with a metallic or bitter taste is most likely a sign of corrosion in older galvanized iron and copper pipe plumbing in your home. A metallic or bitter taste is most likely to occur first thing in the morning or after extended periods of no water use. If you experience a metallic or bitter taste in your water, turn your tap on full flow for at least 30 seconds to flush out the stagnant water. The water will be replaced with fresh water from SUB’s water supply.
Occasionally glasses or cups that have been through a dishwasher may retain traces of detergents. As a test, try rinsing the glass or cup with tap water and see whether the taste is still there. If so, adjust the settings on your dishwasher and use no more than the recommended amount of detergent and rinse-aid.