Lead 8/27/99 ppb AL=15  0  5.0  Corrosion of household  NO
            plumbing systems; and 
            lead solder joints

Nitrate-N 9/2/99 ppm 10  10  0.10  Erosion of natural deposits  NO
          and decaying vegetation or 
          tundra

Copper 8/27/99 ppm AL=1.3  1.3  0.248  Corrosion of household  NO
          plumbing, and copper tubing 
Fluoride 12/31/99 ppm 4  4  1.05  Water additive which  NO
          promotes strong teeth

Volatile Organic Chemicals

TTHMs  9/15/99 ppb 100  0  0.60  By-product of drinking water  NO
          chlorination

       Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons such as people with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly, and infants can be particularly at risk from infections. These individuals should seek advice about drinking water from their health care providers.  EPA/CDC guidelines on appropriate methods to lessen the risk of infection by Cryptosporidium are available from the EPA Safe Drinking Water Hotline (800-426-4791).