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National Drinking Water Database


Chicago Department of Water Management Utilities - Chicago, IL


Serves 2,896,016 people

Dibromoacetic acid

Dibromoacetic acid is a disinfection byproduct regulated by EPA as one of five haloacetic acids that are formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.
 
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
230 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Dibromoacetic acidDibromoacetic acid is a disinfection byproduct regulated by EPA as one of five haloacetic acids that are formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.0.61 ppb
1.8 ppb
NoNo
60 ppb
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 Dibromoacetic acid

Health Based Limits for Dibromoacetic acid

StandardDescriptionLevel
Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.60 ppb

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2009-04-070 ppb220 ppb
2009-01-260.6 ppb210 to 1.2 ppb
2008-10-210.55 ppb210 to 1.1 ppb
2008-09-241.25 ppb3220 to 1.7 ppb
2008-07-250.57 ppb34160 to 1.2 ppb
2008-06-250 ppb220 ppb
2008-05-270 ppb32320 ppb
2008-03-260.03 ppb32310 to 1 ppb
2008-01-280.92 ppb3460 to 1.2 ppb
2007-12-181 ppb201 ppb
2007-11-281 ppb3201 ppb
2007-10-161 ppb201 ppb
2007-07-171 ppb201 ppb
2007-04-240 ppb220 ppb
2007-02-060 ppb220 ppb
2006-10-241 ppb201 ppb
2006-07-250.5 ppb210 to 1 ppb
2006-04-180 ppb220 ppb
2006-01-241 ppb101 ppb
2006-01-231.2 ppb101.2 ppb
2005-10-181.2 ppb101.2 ppb
2005-08-081.8 ppb101.8 ppb
2005-04-270 ppb110 ppb
2005-01-260 ppb110 ppb
2004-10-271.1 ppb101.1 ppb
2004-07-280 ppb110 ppb
2004-04-271.4 ppb101.4 ppb
2004-01-280 ppb110 ppb