11/1/11 notice from Ken Feeney –
TO ALL CONSUMERS SERVED BY THE MEDFIELD WATER DEPARTMENT
*** IMPORTANT INFORMATION ABOUT YOUR DRINKING WATER ***
This notice is to advise our customers that our water system is in noncompliance with the drinking water standards for Total Coliform bacteria during the months of September and October 2011. Similar notices were issued to you for violations occurring in June, July, and August 2011. Although this is not an emergency, as our customers, you have a right to know what happened, what you should do, and what we are doing to correct this situation.
During routine water sampling in early September and mid-October, more than one sample or greater than five percent of the samples collected showed the positive presence of coliform bacteria. This exceeds acceptable standards.
What should I do? You do not need to boil your water or take other corrective actions. However, 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.
Please share this information with all other people who drink this water, especially those who may not have received this notice directly (for example, people in apartments, nursing homes, schools, and businesses). You can do this by posting this notice in a public place or distributing copies by hand or mail.
What does this Mean?
Total coliform bacteria are generally not harmful themselves. Colijorms 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.
Bacterial contamination can occur when increased run-off enters the drinking water source (for example, following heavy rains). It can also happen due to a break in the distribution system (pipes), contamination in a storage tank or a failure in the water treatment process. Whenever we detect coliform bacteria in any sample, we do follow-up testing to see if other bacteria of greater concern, such as E. coli, are present. We did not find any of these bacteria in our subsequent testing. If we had, we would have notified you immediately.
What is being done?
In response to the ongoing bacteria detections, we are adding sodium hypochlorite (chlorine) at all active sources to achieve a chlorine residual throughout all areas of the water system. Low levels of chlorine and a slight discoloration may be detected in the water. Aquarium owners and users of kidney dialysis machines are advised to treat or filter the water before use.
We will continue to maintain chlorine levels throughout our system and monitor for the presence of contaminants in the sources and distribution system to ensure the safety of the water supply. We are in contact with MassDEP who will evaluate the effectiveness of the steps taken to determine if any further action is required.
For more information, please contact Kenneth Feeney, D.P.W. Superintendent, at 1-508-906-3002, or kfeeney@medfield.net or refer to our website http://www.town.medfield.net.
This notice does not affect persons using private drinking water wells.
PWSID#: 2175000
Date Distributed: 11/1/11