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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

City of Galveston

Dichloroacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

192

Samples

0

Samples exceeding legal limit (MCL)

175

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20146.16 ppb3230ND - 11.4 ppb
20158.10 ppb3229ND - 18.0 ppb
20166.62 ppb3229ND - 12.4 ppb
20174.41 ppb3230ND - 9.50 ppb
20184.43 ppb3231ND - 9.20 ppb
20194.96 ppb3226ND - 10.7 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.2 ppb

The EWG Health Guideline of 0.2 ppb for dichloroacetic acid was proposed in 2020 by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk.a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-20AC478947.90 ppb
2014-03-20AC478937.90 ppb
2014-03-20AC47889ND
2014-03-20AC478928.10 ppb
2014-03-20AC478997.30 ppb
2014-03-20AC478718.70 ppb
2014-03-20AC478919.10 ppb
2014-03-20AC478987.90 ppb
2014-06-04AC560289.30 ppb
2014-06-04AC559958.10 ppb
2014-06-04AC560294.40 ppb
2014-06-04AC5604010.2 ppb
2014-06-04AC5599410.5 ppb
2014-06-04AC560087.40 ppb
2014-06-04AC5603011.4 ppb
2014-06-04AC5603110.3 ppb
2014-09-05AC661265.60 ppb
2014-09-05AC661625.00 ppb
2014-09-05AC661211.20 ppb
2014-09-05AC661486.00 ppb
2014-09-05AC661472.40 ppb
2014-09-05AC661274.20 ppb
2014-09-05AC661457.40 ppb
2014-09-05AC661547.30 ppb
2014-12-03AC735174.60 ppb
2014-12-03AC735564.20 ppb
2014-12-03AC73519ND
2014-12-03AC735264.60 ppb
2014-12-03AC735212.70 ppb
2014-12-03AC735573.70 ppb
2014-12-03AC735224.50 ppb
2014-12-03AC735205.30 ppb
2015-02-27AC8229912.9 ppb
2015-02-27AC8230714.3 ppb
2015-02-27AC82303ND
2015-02-27AC8229813.8 ppb
2015-02-27AC823287.80 ppb
2015-02-27AC8229611.9 ppb
2015-02-27AC822931.000 ppb
2015-02-27AC8229715.3 ppb
2015-04-08AC8769014.9 ppb
2015-04-08AC8768813.8 ppb
2015-04-08AC876852.00 ppb
2015-04-08AC8768118.0 ppb
2015-04-08AC876895.40 ppb
2015-04-08AC8768411.4 ppb
2015-04-08AC876828.40 ppb
2015-04-08AC8769117.3 ppb
2015-07-21AD0038811.2 ppb
2015-07-21AD0038910.8 ppb
2015-07-21AD00369ND
2015-07-21AD0038610.00 ppb
2015-07-21AD003873.20 ppb
2015-07-21AD0035711.5 ppb
2015-07-21AD003605.60 ppb
2015-07-21AD0035912.8 ppb
2015-10-20AD111601.60 ppb
2015-10-20AD111741.30 ppb
2015-10-20AD11175ND
2015-10-20AD111795.50 ppb
2015-10-20AD111641.80 ppb
2015-10-20AD111654.70 ppb
2015-10-20AD111734.80 ppb
2015-10-20AD111776.10 ppb
2016-03-10AD281919.40 ppb
2016-03-10AD281699.50 ppb
2016-03-10AD281909.60 ppb
2016-03-10AD281721.60 ppb
2016-03-10AD28187ND
2016-03-10AD281712.20 ppb
2016-03-10AD281688.10 ppb
2016-03-10AD281888.80 ppb
2016-06-02AD3913911.1 ppb
2016-06-02AD3914611.4 ppb
2016-06-02AD391497.20 ppb
2016-06-02AD3912910.4 ppb
2016-06-02AD3913012.4 ppb
2016-06-02AD3914410.7 ppb
2016-06-02AD391505.80 ppb
2016-06-02AD3915111.1 ppb
2016-09-29AD519617.00 ppb
2016-09-29AD519407.70 ppb
2016-09-29AD51952ND
2016-09-29AD519346.60 ppb
2016-09-29AD519635.90 ppb
2016-09-29AD519437.60 ppb
2016-09-29AD519511.000 ppb
2016-09-29AD519595.20 ppb
2016-10-04AD524427.20 ppb
2016-10-04AD524436.50 ppb
2016-10-04AD52440ND
2016-10-04AD524445.90 ppb
2016-10-04AD524415.70 ppb
2016-10-04AD524375.20 ppb
2016-10-04AD524455.00 ppb
2016-10-04AD524386.00 ppb
2017-02-21AD712346.20 ppb
2017-02-21AD712335.80 ppb
2017-02-21AD71235ND
2017-02-21AD712365.90 ppb
2017-02-21AD712379.50 ppb
2017-02-21AD712386.10 ppb
2017-02-21AD712391.60 ppb
2017-02-21AD712705.60 ppb
2017-05-09AD833054.50 ppb
2017-05-09AD833004.10 ppb
2017-05-09AD833075.50 ppb
2017-05-09AD833084.00 ppb
2017-05-09AD833106.90 ppb
2017-05-09AD833013.90 ppb
2017-05-09AD832895.30 ppb
2017-05-09AD833043.90 ppb
2017-08-08AD923934.20 ppb
2017-08-08AD924012.40 ppb
2017-08-08AD923974.40 ppb
2017-08-08AD923983.00 ppb
2017-08-08AD923954.40 ppb
2017-08-08AD923993.30 ppb
2017-08-08AD923962.70 ppb
2017-08-08AD924003.20 ppb
2017-10-11AE005585.30 ppb
2017-10-11AE005654.60 ppb
2017-10-11AE00557ND
2017-10-11AE005595.00 ppb
2017-10-11AE005604.90 ppb
2017-10-11AE005625.10 ppb
2017-10-11AE005635.10 ppb
2017-10-11AE005614.60 ppb
2018-01-31AE114938.50 ppb
2018-01-31AE115039.00 ppb
2018-01-31AE114919.20 ppb
2018-01-31AE114967.30 ppb
2018-01-31AE115029.20 ppb
2018-01-31AE114988.70 ppb
2018-01-31AE114857.90 ppb
2018-01-31AE115046.90 ppb
2018-06-14AE300014.60 ppb
2018-06-14AE300034.30 ppb
2018-06-14AE299937.10 ppb
2018-06-14AE300093.20 ppb
2018-06-14AE299864.30 ppb
2018-06-14AE300074.70 ppb
2018-06-14AE300065.10 ppb
2018-06-14AE299873.60 ppb
2018-08-08AE361103.20 ppb
2018-08-08AE360843.20 ppb
2018-08-08AE360763.30 ppb
2018-08-08AE360783.00 ppb
2018-08-08AE361052.40 ppb
2018-08-08AE361064.10 ppb
2018-08-08AE360992.30 ppb
2018-08-08AE361042.60 ppb
2018-10-02AE425292.40 ppb
2018-10-02AE425301.50 ppb
2018-10-02AE425311.000 ppb
2018-10-02AE425322.20 ppb
2018-10-02AE425333.60 ppb
2018-10-02AE425341.60 ppb
2018-10-02AE42535ND
2018-10-02AE425361.60 ppb
2019-01-15AE4981310.7 ppb
2019-01-15AE498129.20 ppb
2019-01-15AE49811ND
2019-01-15AE4981010.5 ppb
2019-01-15AE498093.10 ppb
2019-01-15AE498089.50 ppb
2019-01-15AE49807ND
2019-01-15AE498068.20 ppb
2019-05-09AE6566910.1 ppb
2019-05-09AE656735.40 ppb
2019-05-09AE656718.70 ppb
2019-05-09AE656748.50 ppb
2019-05-09AE656729.80 ppb
2019-05-09AE656758.20 ppb
2019-05-09AE656709.50 ppb
2019-05-09AE656688.70 ppb
2019-07-24AE75769ND
2019-07-24AE757611.30 ppb
2019-07-24AE757463.50 ppb
2019-07-24AE757404.10 ppb
2019-07-24AE757672.60 ppb
2019-07-24AE757413.60 ppb
2019-07-24AE757624.00 ppb
2019-07-24AE757684.00 ppb
2019-11-20AE901492.10 ppb
2019-11-20AE90166ND
2019-11-20AE90148ND
2019-11-20AE901472.20 ppb
2019-11-20AE901654.70 ppb
2019-11-20AE901523.50 ppb
2019-11-20AE901503.00 ppb
2019-11-20AE90151ND