Contaminant levels in Vermillion�s water supply are almost exactly the same as they were last year.
That�s good news, said water superintendent Randy Isaccson.
�Quite honestly, our groundwater source that we have in Vermillion is a very good groundwater source,� he said. It�s a little on the hard side, but we don�t have any of the harmful things that could be in the water to any certain extent.�
Isaacson was speaking in regard to the 2010 Drinking Water Report, which was mailed to Vermillion residents last week.
According to the report, Vermillion�s water was well within acceptable contaminant levels.
For example, 90 percent of the samples tested must have less than the allowable level of lead and copper. The report said only one of the samples tested at that level in terms of lead, and none of the samples were found to contain that level of copper.
The major source of contaminant for lead is the corrosion of household plumbing systems and the erosion of natural deposits, the report said.
The presence of other contaminants such as arsenic, barium and chromium were the same low levels as in the 2009 report, Isaacson said.
The testing is performed by the South Dakota State Health Lab.
�They test both point source, which is where it enters the distribution system of the water treatment plant, and also a rural water test, meaning water right out of the well,� Isaacson said.
The contaminant levels have never been high enough to warrant making any improvements on the water system, Isaacson said.
�I can�t remember us ever being above any maximum contaminant level. We are always well within the limits set,� he said.