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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Los Angeles County WW District 29 & 80-Malib

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.

MORE ABOUT THIS CONTAMINANT

 

86

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND120ND
2015ND160ND
2016ND160ND
2017ND160ND
2018ND120ND
2019ND140ND

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
2014-06-105442-803-0810ND
2014-06-105442-802-0925ND
2014-06-105442-801-0940ND
2014-06-185442-804-0816ND
2014-09-095442-804-1215ND
2014-09-095442-803-0840ND
2014-09-095442-802-0953ND
2014-09-095442-801-1012ND
2014-12-095442-804-1255ND
2014-12-095442-803-0814ND
2014-12-095442-802-0922ND
2014-12-095442-801-0941ND
2015-03-125442-802-0938ND
2015-03-125442-803-0843ND
2015-03-125442-804-1108ND
2015-03-125442-801-0955ND
2015-06-095442-801-0952ND
2015-06-095442-804-1225ND
2015-06-095442-803-0827ND
2015-06-125442-802-0828ND
2015-09-105442-801-0956ND
2015-09-105442-804-1345ND
2015-09-105442-803-0830ND
2015-09-105442-802-0927ND
2015-12-095442-804-1304ND
2015-12-095442-802-1147ND
2015-12-095442-803-1403ND
2015-12-095442-801-1212ND
2016-03-085442-804-1217ND
2016-03-085442-802-0930ND
2016-03-085442-801-0946ND
2016-03-085442-803-0816ND
2016-06-075442-804-1130ND
2016-06-075442-802-0902ND
2016-06-075442-801-0921ND
2016-06-075442-803-0816ND
2016-09-075442-803-0810ND
2016-09-075442-804-1203ND
2016-09-075442-801-0927ND
2016-09-075442-802-0904ND
2016-12-065442-801-0922ND
2016-12-065442-804-1122ND
2016-12-065442-802-0901ND
2016-12-065442-803-0807ND
2017-03-095442-801-0955ND
2017-03-095442-804-1042ND
2017-03-095442-802-0931ND
2017-03-095442-803-0841ND
2017-06-139588-802-0937ND
2017-06-139588-803-0825ND
2017-06-139588-801-1002ND
2017-06-139588-804-1218ND
2017-09-129590-803-0755ND
2017-09-129590-802-1230ND
2017-09-129590-801-1220ND
2017-09-129590-804-1300ND
2017-12-129590-801-0845ND
2017-12-129590-804-0800ND
2017-12-129590-803-1000ND
2017-12-129590-802-0910ND
2018-03-139590-803-0745ND
2018-03-139590-001-0845ND
2018-03-139590-002-0830ND
2018-06-129590-002-0918ND
2018-06-129590-001-0924ND
2018-06-129590-803-0800ND
2018-09-119590-803-0730ND
2018-09-119590-001-1228ND
2018-09-119590-002-0947ND
2018-12-119590-001-0938ND
2018-12-119590-803-0820ND
2018-12-119590-002-1000ND
2019-03-129590-001-0850ND
2019-03-129590-803-0715ND
2019-03-129590-002-0813ND
2019-06-119590-002-0840ND
2019-06-119590-001-0900ND
2019-06-119590-803-1210ND
2019-09-129590-804-0830ND
2019-09-129590-001-1020ND
2019-09-129590-803-1145ND
2019-09-129590-002-0940ND
2019-12-109590-801-0840ND
2019-12-109590-802-0835ND
2019-12-109590-804-1110ND
2019-12-109590-803-1147ND