Any private water supply shall be deemed unfit for human consumption if the concentration of any single organic chemical exceeds 50 parts per billion or if the concentration of two or more chemicals exceeds 100 parts per billion. These standards shall conform to federal and/or New Jersey State standards promulgated as a result of regulations or state or federal law. If current standards for maximum safe levels of contaminants are changed in the future, the standards used to determine potability may be revised administratively to conform to the current state or federal guidelines. Private water supplies shall conform to primary drinking water standards for metals. The coliform count shall be less than one per 100 milliliters. If human carcinogens are found, they shall be specially noted. The concerned party or parties shall be notified in writing that the water exceeds minimum standards and renotified periodically or until the problem is resolved.