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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

City of Bellaire

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

85

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201413.4 ppb1611ND - 27.9 ppb
201519.0 ppb1614ND - 41.5 ppb
201620.9 ppb16169.80 ppb - 33.3 ppb
201714.6 ppb1615ND - 21.4 ppb
201818.0 ppb1614ND - 29.2 ppb
201917.8 ppb1615ND - 32.2 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
2014-03-03AC4525827.4 ppb
2014-03-03AC45261ND
2014-03-03AC45259ND
2014-03-03AC4525427.9 ppb
2014-04-07AC49611ND
2014-06-06AC5629325.4 ppb
2014-06-06AC5629026.4 ppb
2014-06-06AC5628125.9 ppb
2014-09-25AC68297ND
2014-09-25AC6828920.2 ppb
2014-09-25AC68290ND
2014-09-25AC6828717.6 ppb
2014-11-21AC7273311.0 ppb
2014-11-21AC7272811.4 ppb
2014-11-21AC7273412.2 ppb
2014-11-21AC727629.30 ppb
2015-01-20AC7692118.0 ppb
2015-01-20AC7691617.6 ppb
2015-01-20AC7691920.0 ppb
2015-01-20AC7691116.4 ppb
2015-04-28AC8969033.0 ppb
2015-04-28AC89691ND
2015-04-28AC8969241.5 ppb
2015-04-28AC89688ND
2015-07-20AD0009224.0 ppb
2015-07-20AD0012530.3 ppb
2015-07-20AD0012930.1 ppb
2015-07-20AD0014222.2 ppb
2015-11-13AD1359713.3 ppb
2015-11-13AD1359913.2 ppb
2015-11-13AD1359611.3 ppb
2015-11-13AD1359812.7 ppb
2016-01-12AD1755518.5 ppb
2016-01-12AD1756417.7 ppb
2016-01-12AD1755418.3 ppb
2016-01-12AD1756017.6 ppb
2016-04-06AD3205528.0 ppb
2016-04-06AD3205933.3 ppb
2016-04-06AD3202525.3 ppb
2016-04-06AD3204828.1 ppb
2016-07-07AD4328123.2 ppb
2016-07-07AD4329127.0 ppb
2016-07-07AD4328724.4 ppb
2016-07-07AD4328223.0 ppb
2016-10-04AD5246015.0 ppb
2016-10-04AD524369.80 ppb
2016-10-04AD5246413.7 ppb
2016-10-04AD5246211.7 ppb
2017-01-18AD6532013.4 ppb
2017-01-18AD6531912.3 ppb
2017-01-18AD6531814.1 ppb
2017-01-18AD6532111.5 ppb
2017-04-10AD7890217.1 ppb
2017-04-10AD78903ND
2017-04-10AD7890118.7 ppb
2017-04-10AD7890016.7 ppb
2017-07-20AD9009613.7 ppb
2017-07-20AD9009512.8 ppb
2017-07-20AD9009211.6 ppb
2017-07-20AD9009113.4 ppb
2017-10-16AE0079021.4 ppb
2017-10-16AE0082919.5 ppb
2017-10-16AE0083017.8 ppb
2017-10-16AE0078918.9 ppb
2018-01-24AE1013621.2 ppb
2018-01-24AE1013719.0 ppb
2018-01-24AE1013916.4 ppb
2018-01-24AE1013820.7 ppb
2018-04-09AE2163122.0 ppb
2018-04-09AE2163024.0 ppb
2018-04-09AE2164325.0 ppb
2018-04-09AE2166929.2 ppb
2018-07-02AE3216721.7 ppb
2018-07-02AE3216421.6 ppb
2018-07-02AE3217018.0 ppb
2018-07-02AE3216320.1 ppb
2018-10-12AE4339515.2 ppb
2018-10-12AE43389ND
2018-10-12AE43390ND
2018-10-12AE4339413.1 ppb
2019-01-15AE4980427.6 ppb
2019-01-15AE4980528.8 ppb
2019-01-15AE4980332.0 ppb
2019-01-15AE4980232.2 ppb
2019-04-02AE6086116.2 ppb
2019-04-02AE6084216.2 ppb
2019-04-02AE6083919.1 ppb
2019-04-02AE6084118.0 ppb
2019-07-10AE7385915.0 ppb
2019-07-10AE738444.30 ppb
2019-07-10AE7385616.7 ppb
2019-07-10AE7384515.2 ppb
2019-10-22AE8719418.4 ppb
2019-10-22AE8719313.3 ppb
2019-10-22AE87195ND
2019-10-22AE8719111.9 ppb