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Bldg 157 Investigation Additional Information

This page has been created to provide those who are interested with more information regarding the ongoing bromate MCL exceedances in NAS I, Building 157. Our intention is to keep the NAS Sigonella community informed about our results and what actions will be taken to fix problems related to the water system.

Base leadership and water-quality engineers continue to seek the root cause for the presence of bromate in the water and are taking the following steps to further investigate the issue:

- Reviewing laboratory procedures to make sure all possible sources of laboratory error are eliminated

- Performing additional testing to identify bromate cause and, once identified, ensure that corrections achieve bromate level reductions ultimately below the MCL

- Perform an in-depth building pipe material and cross-connection survey to determine if structural changes are responsible.

For more information, please contact:

Rachel Methvin, P.E.

NAS Sigonella Drinking Water Program Manager

NAVFAC PWD Sigonella, Environmental Division

DSN 624-7220

Commercial: 095-86-7220

Building 157

August 25 Notice

June 12 Notice

April 7 Notice

January 28 Notice

March 11, 2016 Notice (English)

March 11, 2016 Notice (Italiano)

April 28, 2016 Notice (English)

April 28, 2016 Notice (Italiano)

For more information on the Safe Drinking Water Act, please visit


For information on EPA's Drinking Water Standards, please visit or call +1-800-426-4791.



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