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National Drinking Water Database

San Diego Water Department Utilities - San Diego, CA

Serves 1,281,400 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
50 days
Tests ConductedNumber of individual tests done for this contaminant
133 tests

Testing Summary

Health Limit
Legal Limit

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.4.44 ppb
6.64 ppb
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

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
Samples taken that dayNumber of Non-DetectsRange of Results
2009-03-173.98 ppb203.92 to 4.03 ppb
2009-02-174.18 ppb303.26 to 5.23 ppb
2009-01-203.4 ppb303.22 to 3.67 ppb
2008-12-164.89 ppb204.26 to 5.51 ppb
2008-11-185.54 ppb304.21 to 6.82 ppb
2008-09-163.32 ppb302.31 to 4.31 ppb
2008-08-194.51 ppb303.79 to 5.41 ppb
2008-06-173.37 ppb302.76 to 3.92 ppb
2008-05-205.92 ppb305.45 to 6.24 ppb
2008-04-153.83 ppb203.28 to 4.38 ppb
2008-02-195.39 ppb304.5 to 6.71 ppb
2008-01-153.77 ppb303.2 to 4.09 ppb
2007-12-183.65 ppb302.8 to 4.1 ppb
2007-11-213.15 ppb103.15 ppb
2007-11-204.36 ppb203.96 to 4.75 ppb
2007-10-164.27 ppb303.66 to 4.89 ppb
2007-09-182.81 ppb302.47 to 3.22 ppb
2007-08-213.23 ppb302.88 to 3.56 ppb
2007-07-175.27 ppb304.8 to 6.17 ppb
2007-06-195.43 ppb304.76 to 6.39 ppb
2007-05-154.84 ppb304.09 to 5.31 ppb
2007-04-175.94 ppb305.21 to 6.67 ppb
2007-03-204.81 ppb303.67 to 5.39 ppb
2007-02-212.41 ppb102.41 ppb
2007-02-203.84 ppb203.63 to 4.04 ppb
2007-01-162.61 ppb302.02 to 3.02 ppb
2006-12-192.72 ppb202.28 to 3.15 ppb
2006-11-213.06 ppb103.06 ppb
2006-09-193.4 ppb302.99 to 3.79 ppb
2006-08-154.56 ppb303.25 to 6.76 ppb
2006-07-182.92 ppb302.35 to 3.3 ppb
2006-06-203.88 ppb302.81 to 4.8 ppb
2006-05-166.49 ppb303.5 to 11.3 ppb
2006-04-184.73 ppb202.86 to 6.59 ppb
2006-03-214.81 ppb204.61 to 5.01 ppb
2006-02-214.29 ppb303.11 to 5.14 ppb
2005-12-203.87 ppb303.52 to 4.33 ppb
2005-10-183.59 ppb302.86 to 4.21 ppb
2005-09-204.34 ppb303.91 to 5.09 ppb
2005-06-213.95 ppb203.38 to 4.51 ppb
2005-05-175.72 ppb303.94 to 7.63 ppb
2005-04-195.53 ppb304.84 to 6.54 ppb
2005-03-155.3 ppb205.1 to 5.49 ppb
2005-02-156.37 ppb305.19 to 6.98 ppb
2005-01-185.25 ppb303.84 to 6.01 ppb
2004-12-215.37 ppb304.45 to 6.29 ppb
2004-11-165.5 ppb304.16 to 6.67 ppb
2004-10-196.3 ppb304.79 to 7.47 ppb
2004-08-176.64 ppb306.45 to 6.93 ppb
2004-05-184.67 ppb204.17 to 5.16 ppb