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National Drinking Water Database


Cambridge Water Department Utilities - Cambridge, MA


Serves 101,355 people

Bromide

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
16 days
Tests ConductedNumber of individual tests done for this contaminant
16 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

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.88 ppb
130 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
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2008-12-0877 ppb1077 ppb
2008-10-0267 ppb1067 ppb
2008-08-0746 ppb1046 ppb
2008-04-1072 ppb1072 ppb
2008-01-1095 ppb1095 ppb
2007-11-28100 ppb10100 ppb
2007-08-0670 ppb1070 ppb
2007-07-0980 ppb1080 ppb
2007-06-0580 ppb1080 ppb
2007-03-0190 ppb1090 ppb
2007-01-0390 ppb1090 ppb
2006-08-0291 ppb1091 ppb
2006-06-26130 ppb10130 ppb
2005-12-0190 ppb1090 ppb
2005-10-04120 ppb10120 ppb
2005-09-07110 ppb10110 ppb