No samples had copper detected at a level greater than the Action Level of 1.3 ppm. One of fifty samples from the water distribution system had lead detected at a level greater than the Action Level of 15 ppb. Turbidity is a measure of the cloudiness of the water. We monitor it because it is a good indicator of water quality.
High turbidity can hinder the effectiveness of disinfectants.
The TTHM detected level is a running annual average for drinking water samples tested in 1999 from the distribution system. These values are the average of all finished drinking water samples tested. No MCLs have been established for these compounds. To view a listing of contaminants for which Wilmington Department of Public Works tested but did not detect click here .