IMPORTANT INFORMATION ABOUT YOUR DRINKING WATER
FROM THE CITY OF DOLLIVER
Tests showed coliform bacteria in more samples than allowed
Although this is not an emergency and there is nothing you need to do right now, as our customers, you have a right to know what happened and what we did to correct this situation.
Our water system recently violated a drinking water standard. As a public water supply, we routinely monitor for the presence of drinking water contaminants including coliform bacteria. On January 20, 2014, we took one sample that showed the presence of coliform bacteria. On January 22, 2014, we took four follow-up samples and three of those samples showed the presence of coliform bacteria. Coliforms were found in more samples than allowed (the standard is that no more than 1 sample per month may do so).
What does this mean?
Total coliform bacteria are generally not harmful themselves. Coliforms are bacteria which are naturally present in the environment and are used as an indicator that other, potentially-harmful, bacteria may be present. Coliforms were found in more samples than allowed and this was a warning of potential problems. Usually, coliforms are a sign that there could be a problem with the treatment or distribution system (pipes). Whenever we detect coliform bacteria in any sample, we do follow-up testing to see if other bacteria of greater concern, such as fecal coliform or E. coli, are present. We did not find any of these bacteria in our follow-up testing. If we had, we would have notified you immediately.
What was done?
On Friday, January 24, 2014, we performed shock chlorination treatment on the city’s water distribution system. On January 27, 2014, we performed follow-up testing and obtained three samples that showed no presence of coliform bacteria.
What should I do? There is nothing you need to do right now, as our customers, you have a right to know what happened and what we did to correct this situation. We are required to let you know that if you have specific health concerns, consult your doctor. People with severely compromised immune systems, infants, and some elderly may be at increased risk. These people should seek advice about drinking water from their health care providers. General guidelines on ways to lessen the risk of infection by microbes are available from EPA’s Safe Drinking Water Hotline at 1-800-426-4791.
For more information, please contact Elizabeth Johansen at 712-262-8847 or PO Box 555, Spencer, Iowa 51301.
You can do this by posting this notice in a public place or distributing copies by hand or mail.
This notice is being sent to you by Dolliver Municipal Water Supply on February 5, 2014