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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

City of Gonzales Water System

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)

132

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.275 ppb328ND - 1.30 ppb
20150.656 ppb3218ND - 1.60 ppb
20160.881 ppb3220ND - 2.20 ppb
20170.906 ppb3230ND - 1.90 ppb
20183.05 ppb3226ND - 22.3 ppb
20191.42 ppb3230ND - 5.30 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
2014-02-17201164735ND
2014-02-17201164736ND
2014-02-17201164737ND
2014-02-17201164738ND
2014-02-17201164735ND
2014-02-17201164736ND
2014-02-17201164737ND
2014-02-17201164738ND
2014-05-19204176001ND
2014-05-192041850011.000 ppb
2014-05-19204187001ND
2014-05-192041890011.000 ppb
2014-05-19204176001ND
2014-05-192041850011.000 ppb
2014-05-19204187001ND
2014-05-192041890011.000 ppb
2014-08-18208140001ND
2014-08-18208141001ND
2014-08-18208143001ND
2014-08-18208144001ND
2014-08-18208140001ND
2014-08-18208141001ND
2014-08-18208143001ND
2014-08-18208144001ND
2014-11-192012533001ND
2014-11-192012533002ND
2014-11-1920125330031.10 ppb
2014-11-1920125330041.30 ppb
2014-11-192012533001ND
2014-11-192012533002ND
2014-11-1920125330031.10 ppb
2014-11-1920125330041.30 ppb
2015-02-162016095001ND
2015-02-162016095002ND
2015-02-162016095003ND
2015-02-162016095004ND
2015-02-162016095001ND
2015-02-162016095002ND
2015-02-162016095003ND
2015-02-162016095004ND
2015-05-1920201470011.000 ppb
2015-05-192020147002ND
2015-05-1920201470031.10 ppb
2015-05-1920201470041.10 ppb
2015-05-1920201470011.000 ppb
2015-05-192020147002ND
2015-05-1920201470031.10 ppb
2015-05-1920201470041.10 ppb
2015-08-172024411001ND
2015-08-1720244110021.000 ppb
2015-08-1720244110031.10 ppb
2015-08-172024411004ND
2015-08-172024411001ND
2015-08-1720244110021.000 ppb
2015-08-1720244110031.10 ppb
2015-08-172024411004ND
2015-11-1620286590011.000 ppb
2015-11-1620286590021.20 ppb
2015-11-1620286590031.60 ppb
2015-11-1620286590041.40 ppb
2015-11-1620286590011.000 ppb
2015-11-1620286590021.20 ppb
2015-11-1620286590031.60 ppb
2015-11-1620286590041.40 ppb
2016-02-1520325530011.10 ppb
2016-02-1520325530021.30 ppb
2016-02-1520325530031.50 ppb
2016-02-1520325530042.20 ppb
2016-02-1520325530011.10 ppb
2016-02-1520325530021.30 ppb
2016-02-1520325530031.50 ppb
2016-02-1520325530042.20 ppb
2016-05-162036714001ND
2016-05-162036714002ND
2016-05-162036714003ND
2016-05-162036714004ND
2016-05-162036714001ND
2016-05-162036714002ND
2016-05-162036714003ND
2016-05-162036714004ND
2016-08-2920418720011.30 ppb
2016-08-2920418720021.70 ppb
2016-08-2920418720031.40 ppb
2016-08-2920418720041.40 ppb
2016-08-2920418720011.30 ppb
2016-08-2920418720021.70 ppb
2016-08-2920418720031.40 ppb
2016-08-2920418720041.40 ppb
2016-11-142045715001ND
2016-11-142045715002ND
2016-11-1420457150031.20 ppb
2016-11-1420457150041.000 ppb
2016-11-142045715001ND
2016-11-142045715002ND
2016-11-1420457150031.20 ppb
2016-11-1420457150041.000 ppb
2017-02-02352929630030.760 ppb
2017-02-02352929630040.740 ppb
2017-02-02352929630050.890 ppb
2017-02-02352929630061.000 ppb
2017-02-02352929630030.760 ppb
2017-02-02352929630040.740 ppb
2017-02-02352929630050.890 ppb
2017-02-02352929630061.000 ppb
2017-05-04353106070091.30 ppb
2017-05-04353106070101.90 ppb
2017-05-0435310607011ND
2017-05-04353106070121.30 ppb
2017-05-04353106070091.30 ppb
2017-05-04353106070101.90 ppb
2017-05-0435310607011ND
2017-05-04353106070121.30 ppb
2017-08-18353314250011.10 ppb
2017-08-18353314250020.940 ppb
2017-08-18353314250031.10 ppb
2017-08-18353314250040.870 ppb
2017-08-18353314250011.10 ppb
2017-08-18353314250020.940 ppb
2017-08-18353314250031.10 ppb
2017-08-18353314250040.870 ppb
2017-11-03353462420010.710 ppb
2017-11-03353462420020.490 ppb
2017-11-03353462420030.850 ppb
2017-11-03353462420040.540 ppb
2017-11-03353462420010.710 ppb
2017-11-03353462420020.490 ppb
2017-11-03353462420030.850 ppb
2017-11-03353462420040.540 ppb
2018-02-0235371907001ND
2018-02-0235371907002ND
2018-02-02353719070031.30 ppb
2018-02-0235371907004ND
2018-02-0235371907001ND
2018-02-0235371907002ND
2018-02-02353719070031.30 ppb
2018-02-0235371907004ND
2018-05-18353932310011.50 ppb
2018-05-18353932310021.50 ppb
2018-05-18353932310032.10 ppb
2018-05-183539323100422.3 ppb
2018-05-18353932310011.50 ppb
2018-05-18353932310021.50 ppb
2018-05-18353932310032.10 ppb
2018-05-183539323100422.3 ppb
2018-08-03354086630013.80 ppb
2018-08-03354086630024.00 ppb
2018-08-03354086630033.80 ppb
2018-08-03354086630043.50 ppb
2018-08-03354086630013.80 ppb
2018-08-03354086630024.00 ppb
2018-08-03354086630033.80 ppb
2018-08-03354086630043.50 ppb
2018-11-01354282040010.910 ppb
2018-11-01354282040021.40 ppb
2018-11-01354282040031.30 ppb
2018-11-01354282040041.40 ppb
2018-11-01354282040010.910 ppb
2018-11-01354282040021.40 ppb
2018-11-01354282040031.30 ppb
2018-11-01354282040041.40 ppb
2019-02-07354471240011.50 ppb
2019-02-07354471240021.30 ppb
2019-02-07354471240031.60 ppb
2019-02-07354471240041.70 ppb
2019-02-07354471240011.50 ppb
2019-02-07354471240021.30 ppb
2019-02-07354471240031.60 ppb
2019-02-07354471240041.70 ppb
2019-05-0835468287001ND
2019-05-08354682870022.40 ppb
2019-05-08354682870035.30 ppb
2019-05-08354682870041.10 ppb
2019-05-0835468287001ND
2019-05-08354682870022.40 ppb
2019-05-08354682870035.30 ppb
2019-05-08354682870041.10 ppb
2019-08-06354887330010.960 ppb
2019-08-06354887330021.30 ppb
2019-08-06354887330031.20 ppb
2019-08-06354887330040.800 ppb
2019-08-06354887330010.960 ppb
2019-08-06354887330021.30 ppb
2019-08-06354887330031.20 ppb
2019-08-06354887330040.800 ppb
2019-11-06355111000010.820 ppb
2019-11-06355111000020.950 ppb
2019-11-06355111000030.880 ppb
2019-11-06355111000040.910 ppb
2019-11-06355111000010.820 ppb
2019-11-06355111000020.950 ppb
2019-11-06355111000030.880 ppb
2019-11-06355111000040.910 ppb