When the minerals in the water begin to leave deposits around the faucets, soak and squeeze a rag out. Then wrap the rag around the area with deposits.
Take a cup of vinegar and using a microwave safe container, heat the vinegar until it's hot and near boiling. Pour the hot vinegar onto the deposits. The rag will keep the vinegar from going down the sink. When the rag cools, remove and scrape a bit. Most deposits will be gone. Repeat for deposits that are stubborn.