For most people, discolored water is not harmful if consumed. It does look bad, however, and not wanting to drink it is perfectly understandable. Some people may be more vulnerable to substances in drinking water than the general population. People who have compromised immune systems, such as those with cancer undergoing chemotherapy, those who have undergone organ transplants, some elderly and infants can be particularly at risk from infections. These people should seek advice from their health care providers about drinking water that is discolored. If you experience discolored water that does not clear after a few minutes of flushing the cold water please call 311.