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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

San Gabriel Valley Water Company - Fontana

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

 

176

Samples

0

Samples exceeding legal limit (MCL)

88

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.225 ppb325ND - 1.90 ppb
2015ND80ND
20160.903 ppb329ND - 5.80 ppb
20173.24 ppb4029ND - 11.0 ppb
20182.51 ppb3221ND - 7.80 ppb
20193.53 ppb3224ND - 14.0 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
2014-01-159588-601-1230ND
2014-01-159588-602-1215ND
2014-01-159588-603-1245ND
2014-01-159588-604-1010ND
2014-01-159588-605-1150ND
2014-01-159588-606-1100ND
2014-01-159588-607-1320ND
2014-01-159588-608-1205ND
2014-04-099588-601-1000ND
2014-04-099588-602-1310ND
2014-04-099588-603-1020ND
2014-04-099588-604-0810ND
2014-04-099588-605-1220ND
2014-04-099588-606-12001.20 ppb
2014-04-099588-607-1030ND
2014-04-099588-608-1240ND
2014-07-179588-601-0750ND
2014-07-179588-602-1150ND
2014-07-179588-603-0820ND
2014-07-179588-604-1016ND
2014-07-179588-605-1030ND
2014-07-179588-606-0950ND
2014-07-179588-607-0830ND
2014-07-179588-608-1130ND
2014-10-209588-601-09401.10 ppb
2014-10-209588-602-0920ND
2014-10-209588-603-0910ND
2014-10-209588-604-08151.10 ppb
2014-10-209588-605-08401.90 ppb
2014-10-209588-606-11251.90 ppb
2014-10-209588-607-1000ND
2014-10-209588-608-0900ND
2015-01-229588-601-1145ND
2015-01-229588-602-1130ND
2015-01-229588-603-1220ND
2015-01-229588-604-0750ND
2015-01-229588-605-1110ND
2015-01-229588-606-0850ND
2015-01-229588-607-0900ND
2015-01-229588-608-1120ND
2016-01-119588-601-0730ND
2016-01-119588-602-1000ND
2016-01-119588-603-0800ND
2016-01-119588-604-0710ND
2016-01-119588-605-0930ND
2016-01-119588-606-09201.30 ppb
2016-01-119588-607-0810ND
2016-01-119588-608-0945ND
2016-06-179588-601-0820ND
2016-06-179588-602-0800ND
2016-06-179588-603-0840ND
2016-06-179588-604-0710ND
2016-06-179588-605-07205.80 ppb
2016-06-179588-606-10101.10 ppb
2016-06-179588-607-08505.40 ppb
2016-06-179588-608-0740ND
2016-07-189588-601-0830ND
2016-07-189588-602-0840ND
2016-07-189588-603-1035ND
2016-07-189588-604-0820ND
2016-07-189588-605-09001.80 ppb
2016-07-189588-606-09104.70 ppb
2016-07-189588-607-10505.50 ppb
2016-07-189588-608-08501.70 ppb
2016-10-119588-601-0800ND
2016-10-119588-602-1250ND
2016-10-119588-603-0815ND
2016-10-119588-604-1110ND
2016-10-119588-605-12201.60 ppb
2016-10-119588-606-0930ND
2016-10-119588-607-0830ND
2016-10-119588-608-1235ND
2017-02-139588-601-12208.20 ppb
2017-02-139588-602-12106.10 ppb
2017-02-139588-603-102010.00 ppb
2017-02-139588-604-07409.10 ppb
2017-02-139588-605-113011.0 ppb
2017-02-139588-606-0920ND
2017-02-139588-607-1010ND
2017-02-139588-608-11452.30 ppb
2017-04-109588-601-07259.70 ppb
2017-04-109588-602-07403.00 ppb
2017-04-109588-603-1253ND
2017-04-109588-604-08235.40 ppb
2017-04-109588-605-08006.30 ppb
2017-04-109588-606-08431.30 ppb
2017-04-109588-607-12152.70 ppb
2017-04-109588-608-07502.20 ppb
2017-07-109588-601-12201.30 ppb
2017-07-109588-602-1200ND
2017-07-109588-603-10004.10 ppb
2017-07-109588-604-07506.00 ppb
2017-07-109588-605-11304.40 ppb
2017-07-109588-606-09401.000 ppb
2017-07-109588-607-10202.90 ppb
2017-07-109588-608-11451.20 ppb
2017-08-149588-601-13105.80 ppb
2017-08-149588-602-1250ND
2017-08-149588-603-0800ND
2017-08-149588-604-11302.60 ppb
2017-08-149588-605-11456.40 ppb
2017-08-149588-606-1110ND
2017-08-149588-607-08104.90 ppb
2017-08-149588-608-1230ND
2017-10-259588-601-0810ND
2017-10-259588-602-1020ND
2017-10-259588-603-0820ND
2017-10-259588-604-08002.00 ppb
2017-10-259588-605-09453.70 ppb
2017-10-259588-606-09301.30 ppb
2017-10-259588-607-08402.60 ppb
2017-10-259588-608-10002.00 ppb
2018-01-199588-601-0740ND
2018-01-199588-602-09403.90 ppb
2018-01-199588-603-07502.90 ppb
2018-01-199588-604-07303.00 ppb
2018-01-199588-605-09004.10 ppb
2018-01-199588-606-0840ND
2018-01-199588-607-08004.40 ppb
2018-01-199588-608-09201.80 ppb
2018-04-029588-601-09555.80 ppb
2018-04-029588-602-09355.80 ppb
2018-04-029588-603-10307.80 ppb
2018-04-029588-604-07251.70 ppb
2018-04-029588-605-09136.60 ppb
2018-04-029588-606-07355.40 ppb
2018-04-029588-607-10153.60 ppb
2018-04-029588-608-09243.70 ppb
2018-07-029588-601-1030ND
2018-07-029588-602-1040ND
2018-07-029588-603-0950ND
2018-07-029588-604-07201.80 ppb
2018-07-029588-605-11104.20 ppb
2018-07-029588-606-0810ND
2018-07-029588-607-10103.70 ppb
2018-07-029588-608-1050ND
2018-10-019588-601-0715ND
2018-10-019588-602-07351.70 ppb
2018-10-019588-603-1155ND
2018-10-019588-604-08252.20 ppb
2018-10-019588-605-08103.80 ppb
2018-10-019588-606-0910ND
2018-10-019588-607-11452.30 ppb
2018-10-019588-608-0745ND
2019-01-079588-601-07402.90 ppb
2019-01-079588-602-08101.90 ppb
2019-01-079588-603-09502.70 ppb
2019-01-079588-604-08401.70 ppb
2019-01-079588-605-08302.60 ppb
2019-01-079588-606-0855ND
2019-01-079588-607-09301.90 ppb
2019-01-079588-608-08201.50 ppb
2019-04-049588-601-10402.10 ppb
2019-04-049588-602-07302.90 ppb
2019-04-049588-603-10205.40 ppb
2019-04-049588-604-07009.60 ppb
2019-04-049588-605-075013.0 ppb
2019-04-049588-606-081014.0 ppb
2019-04-049588-607-100013.0 ppb
2019-04-049588-608-07409.70 ppb
2019-07-019588-601-1050ND
2019-07-019588-602-11304.00 ppb
2019-07-019588-603-10002.90 ppb
2019-07-019588-604-07104.10 ppb
2019-07-019588-605-12305.30 ppb
2019-07-019588-606-0940ND
2019-07-019588-607-09504.50 ppb
2019-07-019588-608-1210ND
2019-10-079588-601-11101.20 ppb
2019-10-079588-602-1120ND
2019-10-079588-603-1050ND
2019-10-079588-604-07152.70 ppb
2019-10-079588-605-13101.000 ppb
2019-10-079588-606-0940ND
2019-10-079588-607-10402.30 ppb
2019-10-079588-608-1130ND