NOTE: Manganese results are now being posted on our water testing website - http://watertesting.topsfieldpublicworks.org. The site includes all of our test results and information about which water sources are in use.
We test our sources for total manganese on a monthly basis. The results of these tests will be posted on this page as they become available. All results are shown in micrograms per Liter unless otherwise noted. The value shown is the average for the month if multiple samples were taken.
Please review the public notice that was sent to our customers in November 2013 to see how these levels compare to guidance from MassDEP. Manganese levels typically decline as water moves futher away from the sources because it precipitates out of solution and coats the pipe walls. Although system levels are normally low (<300 micrograms per Liter) this level can easily be exceeded when sediment in water mains and home plumbing lines is disturbed.
A system map (14 MB) showing the test sites and water mains is available to help customers determine which sampling sites are closest to their homes.