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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

Golden State Water Company (GSWC) - San Dimas

Monochloroacetic 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.

 

185

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND240ND
2013ND320ND
2014ND330ND
2015ND320ND
2016ND320ND
2017ND320ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 53 ppb

The EWG Health Guideline of 53 ppb for monochloroacetic 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.. This health guideline protects against system toxicity.

ppb = parts per billion

All test results

Date Lab ID Result
2012-04-259588-800-0850ND
2012-04-259588-801-0935ND
2012-04-259588-802-0950ND
2012-04-259588-803-0920ND
2012-04-259588-804-1015ND
2012-04-259588-805-0905ND
2012-04-259588-806-0835ND
2012-04-259588-807-0820ND
2012-07-279588-800-0855ND
2012-07-279588-801-0740ND
2012-07-279588-802-0725ND
2012-07-279588-803-0825ND
2012-07-279588-804-1110ND
2012-07-279588-805-0755ND
2012-07-279588-806-0810ND
2012-07-279588-807-1045ND
2012-10-269588-800-0910ND
2012-10-269588-801-0810ND
2012-10-269588-802-0800ND
2012-10-269588-803-0835ND
2012-10-269588-804-1115ND
2012-10-269588-805-0820ND
2012-10-269588-806-0845ND
2012-10-269588-807-1050ND
2013-01-289588-800-0940ND
2013-01-289588-801-0900ND
2013-01-289588-802-0745ND
2013-01-289588-803-0910ND
2013-01-289588-804-1140ND
2013-01-289588-805-0850ND
2013-01-289588-806-0915ND
2013-01-289588-807-1120ND
2013-04-249588-800-0840ND
2013-04-249588-801-0740ND
2013-04-249588-802-0730ND
2013-04-249588-803-0755ND
2013-04-249588-804-1030ND
2013-04-249588-805-0810ND
2013-04-249588-806-0820ND
2013-04-249588-807-1010ND
2013-07-229588-800-1510ND
2013-07-229588-801-1410ND
2013-07-229588-802-1430ND
2013-07-229588-803-1355ND
2013-07-229588-804-1455ND
2013-07-229588-805-1250ND
2013-07-229588-806-1340ND
2013-07-229588-807-1325ND
2013-10-259588-800-0905ND
2013-10-259588-801-0800ND
2013-10-259588-802-0750ND
2013-10-259588-803-0825ND
2013-10-259588-804-1110ND
2013-10-259588-805-0815ND
2013-10-259588-806-0835ND
2013-10-259588-807-1045ND
2014-01-249588-800-0850ND
2014-01-249588-801-0740ND
2014-01-249588-802-0730ND
2014-01-249588-803-0810ND
2014-01-249588-804-1045ND
2014-01-249588-805-0755ND
2014-01-249588-806-0825ND
2014-01-249588-807-1030ND
2014-04-239588-800-0825ND
2014-04-239588-801-0735ND
2014-04-239588-802-0725ND
2014-04-239588-803-0755ND
2014-04-239588-804-1005ND
2014-04-239588-805-0745ND
2014-04-239588-806-0805ND
2014-04-239588-807-0950ND
2014-07-249588-800-1055ND
2014-07-249588-801-1125ND
2014-07-249588-802-1335ND
2014-07-249588-803-1140ND
2014-07-249588-804-1400ND
2014-07-249588-805-1110ND
2014-07-249588-806-1155ND
2014-07-249588-807-1210ND
2014-10-279588-800-0845ND
2014-10-279588-801-0745ND
2014-10-279588-802-0735ND
2014-10-279588-803-0810ND
2014-10-279588-804-1045ND
2014-10-279588-805-0755ND
2014-10-279588-806-0820ND
2014-10-279588-807-1025ND
2014-11-189588-807-0940ND
2015-01-289588-800-0830ND
2015-01-289588-801-0740ND
2015-01-289588-802-0730ND
2015-01-289588-803-0800ND
2015-01-289588-804-1030ND
2015-01-289588-805-0750ND
2015-01-289588-806-0810ND
2015-01-289588-807-0955ND
2015-04-239588-800-0810ND
2015-04-239588-801-0715ND
2015-04-239588-802-0705ND
2015-04-239588-803-0735ND
2015-04-239588-804-0955ND
2015-04-239588-805-0725ND
2015-04-239588-806-0745ND
2015-04-239588-807-0940ND
2015-07-279588-800-1025ND
2015-07-279588-801-0920ND
2015-07-279588-802-0910ND
2015-07-279588-803-0945ND
2015-07-279588-804-1210ND
2015-07-279588-805-0935ND
2015-07-279588-806-1000ND
2015-07-279588-807-1150ND
2015-10-289588-800-0930ND
2015-10-289588-801-0830ND
2015-10-289588-802-0815ND
2015-10-289588-803-0855ND
2015-10-289588-804-0800ND
2015-10-289588-805-0840ND
2015-10-289588-806-0910ND
2015-10-289588-807-1055ND
2016-01-259588-800-0840ND
2016-01-259588-801-0740ND
2016-01-259588-802-0725ND
2016-01-259588-803-0810ND
2016-01-259588-804-1240ND
2016-01-259588-805-0800ND
2016-01-259588-806-0820ND
2016-01-259588-807-1220ND
2016-04-279588-800-0835ND
2016-04-279588-801-0740ND
2016-04-279588-802-0730ND
2016-04-279588-803-0805ND
2016-04-279588-804-1040ND
2016-04-279588-805-0750ND
2016-04-279588-806-0815ND
2016-04-279588-807-1015ND
2016-07-259588-800-0830ND
2016-07-259588-801-0725ND
2016-07-259588-802-0710ND
2016-07-259588-803-0750ND
2016-07-259588-804-1210ND
2016-07-259588-805-0745ND
2016-07-259588-806-0800ND
2016-07-259588-807-1140ND
2016-10-259588-800-0830ND
2016-10-259588-801-0730ND
2016-10-259588-802-0720ND
2016-10-259588-803-0800ND
2016-10-259588-804-1230ND
2016-10-259588-805-0750ND
2016-10-259588-806-0810ND
2016-10-259588-807-1205ND
2017-01-279588-800-0815ND
2017-01-279588-801-0725ND
2017-01-279588-802-0715ND
2017-01-279588-803-0745ND
2017-01-279588-804-1015ND
2017-01-279588-805-0735ND
2017-01-279588-806-0755ND
2017-01-279588-807-0955ND
2017-04-259588-800-0830ND
2017-04-259588-801-0720ND
2017-04-259588-802-0710ND
2017-04-259588-803-0800ND
2017-04-259588-804-1225ND
2017-04-259588-805-0745ND
2017-04-259588-806-0810ND
2017-04-259588-807-1200ND
2017-07-259588-800-1420ND
2017-07-259588-801-1505ND
2017-07-259588-802-1520ND
2017-07-259588-803-1450ND
2017-07-259588-804-1545ND
2017-07-259588-805-1435ND
2017-07-259588-806-1405ND
2017-07-259588-807-1355ND
2017-10-279588-800-0830ND
2017-10-279588-801-0735ND
2017-10-279588-802-0725ND
2017-10-279588-803-0800ND
2017-10-279588-804-1025ND
2017-10-279588-805-0745ND
2017-10-279588-806-0810ND
2017-10-279588-807-1010ND