The Power of Information

National Drinking Water Database

Massachusetts Water Resources Authority Utilities - Boston, MA

Serves 2,000,000 people


Bromide is a naturally occurring element found in surface waters and groundwater and contributes to the formation of toxic tap water disinfection byproducts.
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
0 days
Test Days Exceeding Legal LimitsNumber of days in which the samples taken in that day exceed the Maximum Contaminant Level (Depending on the contaminant and its MCL, that may or may not trigger an MCL violation. Some MCLs are based on averages spanning several months to a year)
0 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
28 days
Tests ConductedNumber of individual tests done for this contaminant
51 tests

Testing Summary

Health Limit
Legal Limit

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
BromideBromide is a naturally occurring element found in surface waters and groundwater and contributes to the formation of toxic tap water disinfection byproducts.16.09 ppb
24.3 ppb
NoLegal at any levelThis is the Federal Limit. State Limits may be lower.
NOTE: Each dot in the above graph represents one month.
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

Health Based and Legal Limits for Bromide

Health Based Limits for Bromide

There are no health based standards that EWG is using for this chemical

Testing Results

Testing DateAverage
Samples taken that dayNumber of Non-DetectsRange of Results
2009-05-0417.45 ppb2016.9 to 18 ppb
2009-04-0621.35 ppb2020.6 to 22.1 ppb
2009-03-0517.6 ppb2017 to 18.2 ppb
2009-02-0217.5 ppb2017 to 18 ppb
2009-01-0516.85 ppb2016.3 to 17.4 ppb
2008-12-0115.75 ppb2015.1 to 16.4 ppb
2008-11-0315.45 ppb2015.1 to 15.8 ppb
2008-10-0613.65 ppb2012.2 to 15.1 ppb
2008-09-0215 ppb2015 ppb
2008-08-1113 ppb2012 to 14 ppb
2008-07-0713.5 ppb2012 to 15 ppb
2008-06-0215 ppb2014 to 16 ppb
2008-05-0515.25 ppb2014.7 to 15.8 ppb
2008-04-0715.15 ppb2014.3 to 16 ppb
2008-03-0315 ppb2014 to 16 ppb
2008-02-0414.9 ppb2014.7 to 15.1 ppb
2008-01-0714.75 ppb2014.4 to 15.1 ppb
2007-12-0314.85 ppb2013.9 to 15.8 ppb
2007-11-0514.55 ppb2013.9 to 15.2 ppb
2007-10-0113.05 ppb2012.6 to 13.5 ppb
2007-08-0614.75 ppb2014.2 to 15.3 ppb
2007-07-0916.35 ppb2016 to 16.7 ppb
2007-06-0416.85 ppb2016 to 17.7 ppb
2007-05-0716.7 ppb1016.7 ppb
2007-04-0217.9 ppb1017.9 ppb
2007-03-0517.4 ppb1017.4 ppb
2007-02-0516.8 ppb1016.8 ppb
2007-01-0824.3 ppb1024.3 ppb