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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

California Water Service Company - East Los Angeles

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)

151

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20148.76 ppb32325.00 ppb - 13.0 ppb
20156.22 ppb3227ND - 12.0 ppb
20165.21 ppb3225ND - 15.0 ppb
20176.83 ppb3223ND - 23.0 ppb
20181.57 ppb3221ND - 3.80 ppb
20193.63 ppb3223ND - 10.00 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
2014-01-075810-800-16165.40 ppb
2014-01-075810-801-15105.30 ppb
2014-01-075810-802-14355.50 ppb
2014-01-075810-803-15255.20 ppb
2014-01-075810-804-14385.00 ppb
2014-01-075810-805-13585.80 ppb
2014-01-075810-806-14505.70 ppb
2014-01-075810-807-15505.50 ppb
2014-04-085810-800-16207.60 ppb
2014-04-085810-801-14205.00 ppb
2014-04-085810-802-13308.60 ppb
2014-04-085810-803-14508.00 ppb
2014-04-085810-804-15398.10 ppb
2014-04-085810-805-11228.90 ppb
2014-04-085810-806-13368.40 ppb
2014-04-085810-807-15557.80 ppb
2014-07-085810-800-124010.00 ppb
2014-07-085810-801-110512.0 ppb
2014-07-085810-802-095212.0 ppb
2014-07-085810-803-13459.80 ppb
2014-07-085810-804-132013.0 ppb
2014-07-085810-805-102113.0 ppb
2014-07-085810-806-093512.0 ppb
2014-07-085810-807-130012.0 ppb
2014-10-075810-800-13416.80 ppb
2014-10-075810-801-11318.30 ppb
2014-10-075810-802-101212.0 ppb
2014-10-075810-803-13199.70 ppb
2014-10-075810-804-130110.00 ppb
2014-10-075810-805-105112.0 ppb
2014-10-075810-806-100112.0 ppb
2014-10-075810-807-114610.00 ppb
2015-01-055810-800-14285.60 ppb
2015-01-055810-801-14005.10 ppb
2015-01-055810-802-13447.20 ppb
2015-01-055810-803-14466.10 ppb
2015-01-065810-804-14525.70 ppb
2015-01-065810-805-13227.40 ppb
2015-01-065810-806-11367.40 ppb
2015-01-065810-807-14335.70 ppb
2015-04-075810-800-14524.50 ppb
2015-04-075810-801-14387.00 ppb
2015-04-075810-802-1052ND
2015-04-075810-803-13467.00 ppb
2015-04-075810-804-13337.60 ppb
2015-04-075810-805-10334.80 ppb
2015-04-075810-806-1012ND
2015-04-075810-807-13588.00 ppb
2015-07-075810-800-13221.90 ppb
2015-07-075810-801-10417.20 ppb
2015-07-075810-802-1429ND
2015-07-075810-803-130810.00 ppb
2015-07-075810-804-12559.70 ppb
2015-07-075810-805-14003.70 ppb
2015-07-075810-806-1345ND
2015-07-075810-807-12386.50 ppb
2015-10-065810-800-15289.10 ppb
2015-10-065810-801-16163.70 ppb
2015-10-065810-802-1346ND
2015-10-065810-803-155712.0 ppb
2015-10-065810-804-154810.00 ppb
2015-10-065810-805-133112.0 ppb
2015-10-065810-806-131912.0 ppb
2015-10-065810-807-153712.0 ppb
2016-01-065810-800-14401.10 ppb
2016-01-065810-801-1555ND
2016-01-065810-802-1514ND
2016-01-065810-803-14005.90 ppb
2016-01-065810-804-14256.40 ppb
2016-01-065810-805-14592.40 ppb
2016-01-065810-806-15301.20 ppb
2016-01-065810-807-11424.90 ppb
2016-04-055810-800-14521.20 ppb
2016-04-055810-801-15571.10 ppb
2016-04-055810-802-1428ND
2016-04-055810-803-15369.60 ppb
2016-04-055810-804-15229.20 ppb
2016-04-055810-805-14124.50 ppb
2016-04-055810-806-1358ND
2016-04-055810-807-15058.50 ppb
2016-07-065810-800-11545.20 ppb
2016-07-065810-801-14043.80 ppb
2016-07-065810-802-1123ND
2016-07-065810-803-134814.0 ppb
2016-07-065810-804-132713.0 ppb
2016-07-065810-805-110815.0 ppb
2016-07-065810-806-10541.20 ppb
2016-07-065810-807-121411.0 ppb
2016-10-045810-800-14376.20 ppb
2016-10-045810-801-15281.40 ppb
2016-10-045810-802-1416ND
2016-10-045810-803-151411.0 ppb
2016-10-045810-804-15028.00 ppb
2016-10-045810-805-140012.0 ppb
2016-10-045810-806-1347ND
2016-10-045810-807-14478.90 ppb
2017-01-045810-800-10572.90 ppb
2017-01-045810-801-1329ND
2017-01-045810-802-1519ND
2017-01-045810-803-13054.50 ppb
2017-01-045810-804-10575.00 ppb
2017-01-045810-805-15054.50 ppb
2017-01-045810-806-1450ND
2017-01-045810-807-11163.60 ppb
2017-04-045810-800-124513.0 ppb
2017-04-045810-801-13519.70 ppb
2017-04-045810-802-1143ND
2017-04-045810-803-132921.0 ppb
2017-04-045810-804-131623.0 ppb
2017-04-045810-805-105614.0 ppb
2017-04-045810-806-1033ND
2017-04-045810-807-125923.0 ppb
2017-07-055810-800-11489.40 ppb
2017-07-055810-801-14438.40 ppb
2017-07-055810-802-1059ND
2017-07-055810-803-130911.0 ppb
2017-07-055810-804-133112.0 ppb
2017-07-055810-805-104416.0 ppb
2017-07-055810-806-1115ND
2017-07-055810-807-120511.0 ppb
2017-10-035810-800-12206.80 ppb
2017-10-035810-801-13103.30 ppb
2017-10-035810-802-1155ND
2017-10-035810-803-12552.00 ppb
2017-10-035810-804-12452.30 ppb
2017-10-035810-805-11189.90 ppb
2017-10-035810-806-1057ND
2017-10-035810-807-12312.10 ppb
2018-01-035810-800-1212ND
2018-01-035810-801-14452.20 ppb
2018-01-035810-802-1130ND
2018-01-035810-803-14072.60 ppb
2018-01-035810-804-14252.90 ppb
2018-01-035810-805-1110ND
2018-01-035810-806-1148ND
2018-01-035810-807-12333.00 ppb
2018-04-035810-800-1303ND
2018-04-035810-801-14082.20 ppb
2018-04-035810-802-1203ND
2018-04-035810-803-13442.70 ppb
2018-04-035810-804-13322.90 ppb
2018-04-035810-805-1131ND
2018-04-035810-806-1053ND
2018-04-035810-807-13162.90 ppb
2018-07-025810-800-13181.20 ppb
2018-07-025810-801-12421.40 ppb
2018-07-025810-802-1442ND
2018-07-025810-804-17221.70 ppb
2018-07-025810-805-16242.70 ppb
2018-07-025810-806-1613ND
2018-07-025810-807-17021.50 ppb
2018-07-115810-803-13511.60 ppb
2018-10-025810-800-11221.50 ppb
2018-10-025810-801-12231.40 ppb
2018-10-025810-802-1103ND
2018-10-025810-803-12002.80 ppb
2018-10-025810-804-11493.00 ppb
2018-10-025810-805-10323.80 ppb
2018-10-025810-806-10143.70 ppb
2018-10-025810-807-11342.50 ppb
2019-01-025810-800-1540ND
2019-01-025810-801-1449ND
2019-01-025810-802-1603ND
2019-01-025810-803-15282.30 ppb
2019-01-025810-804-13492.10 ppb
2019-01-025810-805-0950ND
2019-01-025810-806-0936ND
2019-01-025810-807-11251.40 ppb
2019-04-025810-800-12232.40 ppb
2019-04-025810-801-13141.70 ppb
2019-04-025810-802-1158ND
2019-04-025810-803-12584.20 ppb
2019-04-025810-804-12484.80 ppb
2019-04-025810-805-11234.20 ppb
2019-04-025810-806-11074.20 ppb
2019-04-025810-807-12344.60 ppb
2019-07-015810-800-14455.30 ppb
2019-07-015810-801-15407.00 ppb
2019-07-015810-802-1400ND
2019-07-015810-803-152310.00 ppb
2019-07-015810-804-151210.00 ppb
2019-07-015810-805-14299.60 ppb
2019-07-015810-806-14159.30 ppb
2019-07-015810-807-14568.10 ppb
2019-10-085810-800-12302.90 ppb
2019-10-085810-801-1326ND
2019-10-085810-802-1200ND
2019-10-085810-803-13074.70 ppb
2019-10-085810-804-12565.30 ppb
2019-10-085810-805-11243.50 ppb
2019-10-085810-806-11053.90 ppb
2019-10-085810-807-12414.70 ppb