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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

Suez Water Delaware

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

 

164

Samples

0

Samples exceeding legal limit (MCL)

164

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201415.7 ppb32322.70 ppb - 39.2 ppb
201520.3 ppb31317.90 ppb - 43.8 ppb
201612.9 ppb24242.70 ppb - 25.5 ppb
201713.4 ppb29294.30 ppb - 32.8 ppb
201813.5 ppb32324.20 ppb - 31.9 ppb
20197.76 ppb16162.74 ppb - 17.1 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
2014-03-061074953001A13.6 ppb
2014-03-061074953002A7.20 ppb
2014-03-061074953003A9.70 ppb
2014-03-061074953004A13.7 ppb
2014-03-061074953005A14.5 ppb
2014-03-061074953006A8.60 ppb
2014-03-061074953007A5.60 ppb
2014-03-061074953008A7.90 ppb
2014-06-112013111001 HAA59.10 ppb
2014-06-112013111002 HAA56.50 ppb
2014-06-112013111003 HAA522.0 ppb
2014-06-112013111004 HAA55.80 ppb
2014-06-112013111005 HAA58.30 ppb
2014-06-112013111006 HAA519.3 ppb
2014-06-112013111007 HAA522.1 ppb
2014-06-112013111008 HAA524.2 ppb
2014-09-09202898300-1HAA511.8 ppb
2014-09-092028983002-HAA533.6 ppb
2014-09-092028983003-HAA530.6 ppb
2014-09-092028983004-HAA54.70 ppb
2014-09-092028983005-HAA536.8 ppb
2014-09-092028983006-HAA536.8 ppb
2014-09-092028983007-HAA526.8 ppb
2014-09-092028983008-HAA539.2 ppb
2014-12-182045252001-HAA518.9 ppb
2014-12-182046252002-HAA59.70 ppb
2014-12-182046252003-HAA512.0 ppb
2014-12-182046252004-HAA515.5 ppb
2014-12-182046252005-HAA510.7 ppb
2014-12-182046252006-HAA53.20 ppb
2014-12-182046252007-HAA52.70 ppb
2014-12-182046252008-HAA512.8 ppb
2015-03-112059081001 HAA518.1 ppb
2015-03-112059081002 HAA515.3 ppb
2015-03-112059081003 HAA518.0 ppb
2015-03-112059081004 HAA513.8 ppb
2015-03-112059081005 HAA524.4 ppb
2015-03-112059081006 HAA518.1 ppb
2015-03-112059081007 HAA543.8 ppb
2015-03-112059081008 HAA522.3 ppb
2015-06-082075686001 HAA536.2 ppb
2015-06-082075686002 HAA533.1 ppb
2015-06-082075686003 HAA524.8 ppb
2015-06-082075686004 HAA523.2 ppb
2015-06-082075686005 HAA531.7 ppb
2015-06-082075686006 HAA528.9 ppb
2015-06-082075686007 HAAT24.7 ppb
2015-06-082075686008 HAA529.5 ppb
2015-09-03203960002 HAA510.9 ppb
2015-09-032093960003 HAA57.90 ppb
2015-09-032093960004 HAA510.2 ppb
2015-09-032093960005 HAA513.2 ppb
2015-09-032093960006 HAA515.5 ppb
2015-09-032093960007 HAA59.70 ppb
2015-09-032093960008 HAA58.90 ppb
2015-12-07L5949833-1 HAA519.8 ppb
2015-12-07L5949833-2 HAA514.9 ppb
2015-12-07L5949833-3 HAA514.0 ppb
2015-12-07L5949833-4 HAA521.5 ppb
2015-12-07L5949833-5 HAA527.5 ppb
2015-12-07L5949833-6 HAA518.2 ppb
2015-12-07L5949833-7 HAA517.3 ppb
2015-12-07L5949833-8 HAA512.4 ppb
2016-06-102151332001 HAA525.5 ppb
2016-06-102151332002 HAA516.2 ppb
2016-06-102151332003 HAA513.0 ppb
2016-06-102151332004 HAA54.70 ppb
2016-06-102151332005 HAA517.5 ppb
2016-06-102151332006 HAA517.2 ppb
2016-06-102151332007 HAA513.9 ppb
2016-06-102151332008 HAA516.3 ppb
2016-09-082173721001-HAA513.5 ppb
2016-09-082173721002-HAA510.8 ppb
2016-09-082173721003-HAA58.30 ppb
2016-09-082173721004-HAA53.60 ppb
2016-09-082173721005-HAA516.3 ppb
2016-09-082173721006-HAA512.1 ppb
2016-09-082173721007-HAA59.40 ppb
2016-09-082173721008-HAA510.1 ppb
2016-12-082194964001 HAA517.3 ppb
2016-12-082194964002 HAA512.0 ppb
2016-12-082194964003 HAA510.5 ppb
2016-12-082194964004 HAA52.70 ppb
2016-12-082194964005 HAA517.3 ppb
2016-12-082194964006 HAA519.0 ppb
2016-12-082194964007 HAA511.2 ppb
2016-12-082194964008 HAA510.8 ppb
2017-03-082214632001 HAA511.6 ppb
2017-03-082214632002 HAA55.50 ppb
2017-03-082214632003 HAA55.80 ppb
2017-03-082214632004 HAA55.90 ppb
2017-03-082214632005 HAA59.30 ppb
2017-03-082214632006 HAA511.7 ppb
2017-03-082214632007 HAA55.30 ppb
2017-03-082214632008 HAA55.80 ppb
2017-06-092239424001 HAA514.4 ppb
2017-06-092239424002 HAA513.9 ppb
2017-06-092239424003 HAA511.3 ppb
2017-06-092239424004 HAA54.30 ppb
2017-06-092239424005 HAA515.5 ppb
2017-06-092239424006 HAA514.8 ppb
2017-06-092239424007 HAA512.0 ppb
2017-06-092239424008 HAA511.6 ppb
2017-09-072260181001 HAA527.5 ppb
2017-09-072260181002 HAA532.8 ppb
2017-09-072260181003 HAA524.3 ppb
2017-09-072260181004 HAA55.80 ppb
2017-09-072260181005 HAA529.5 ppb
2017-09-072260181006 HAA517.5 ppb
2017-09-072260181007 HAA519.8 ppb
2017-09-072260181008 HAA525.1 ppb
2017-12-072282095001 HAA57.20 ppb
2017-12-072282095002 HAA59.40 ppb
2017-12-072282095003 HAA513.2 ppb
2017-12-072282095004 HAA59.00 ppb
2017-12-072282095005 HAA58.30 ppb
2018-03-082300879001 HAA55.10 ppb
2018-03-082300879002 HAA54.20 ppb
2018-03-082300879003 HAA59.80 ppb
2018-03-082300879004 HAA515.6 ppb
2018-03-082300879005 HAA56.70 ppb
2018-03-082300879006 HAA56.40 ppb
2018-03-082300879007 HAA512.2 ppb
2018-03-082300879008 HAA514.8 ppb
2018-06-072319771001 HAA514.6 ppb
2018-06-072319771002 HAA520.1 ppb
2018-06-072319771003 HAA511.8 ppb
2018-06-072319771004 HAA525.4 ppb
2018-06-072319771005 HAA522.2 ppb
2018-06-072319771006 HAA517.0 ppb
2018-06-072319771007 HAA59.60 ppb
2018-06-072319771008 HAA56.60 ppb
2018-09-078092132-01 HAA531.9 ppb
2018-09-078092132-02 HAA511.5 ppb
2018-09-078092132-03 HAA54.82 ppb
2018-09-078092132-04 HAA520.7 ppb
2018-09-078092132-05 HAA55.29 ppb
2018-09-078092132-06 HAA528.0 ppb
2018-09-078092132-07 HAA522.0 ppb
2018-09-078092132-08 HAA521.4 ppb
2018-12-078122169-01 HAA511.8 ppb
2018-12-078122169-02 HAA58.08 ppb
2018-12-078122169-03 HAA57.83 ppb
2018-12-078122169-04 HAA59.74 ppb
2018-12-078122169-05 HAA519.8 ppb
2018-12-078122169-06 HAA510.9 ppb
2018-12-078122169-07 HAA59.01 ppb
2018-12-078122169-08 HAA58.53 ppb
2019-06-079062657-01 HAA516.4 ppb
2019-06-079062657-02 HAA59.98 ppb
2019-06-079062657-03 HAA58.06 ppb
2019-06-079062657-04 HAA517.1 ppb
2019-06-079062657-05 HAA54.64 ppb
2019-06-079062657-06 HAA510.6 ppb
2019-06-079062657-07 HAA53.10 ppb
2019-06-079062657-08 HAA53.90 ppb
2019-12-099122414-01 HAA512.8 ppb
2019-12-099122414-02 HAA56.11 ppb
2019-12-099122414-03 HAA54.48 ppb
2019-12-099122414-04 HAA55.82 ppb
2019-12-099122414-05 HAA511.6 ppb
2019-12-099122414-06 HAA54.05 ppb
2019-12-099122414-07 HAA52.82 ppb
2019-12-099122414-08 HAA52.74 ppb