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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Sbcwd - Lessalt

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

 

93

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND120ND
2016ND120ND
20170.163 ppb161ND - 2.60 ppb
2018ND240ND
2019ND260ND

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
2014-01-085810-002-1150ND
2014-04-085810-002-0700ND
2014-12-235810-002-0915ND
2015-01-065810-002-0925ND
2015-02-035810-002-0830ND
2015-04-065810-002-0900ND
2015-05-045810-002-1000ND
2015-06-035810-002-1000ND
2015-07-065810-002-0910ND
2015-08-045810-002-0830ND
2015-08-245810-002-0740ND
2015-09-035810-002-0855ND
2015-10-085810-002-0810ND
2015-11-055810-002-0915ND
2015-12-025810-002-0935ND
2016-01-075810-002-0815ND
2016-02-025810-002-0820ND
2016-03-095810-002-0845ND
2016-04-065810-002-0820ND
2016-05-025810-002-1130ND
2016-06-085810-002-0910ND
2016-07-055810-002-0830ND
2016-08-225810-002-0910ND
2016-09-085810-002-1020ND
2016-10-065810-002-0905ND
2016-11-015810-002-0900ND
2016-12-085810-002-0815ND
2017-01-055810-002-0850ND
2017-02-015810-002-0835ND
2017-03-015810-002-09102.60 ppb
2017-04-055810-002-0845ND
2017-05-035810-002-0915ND
2017-06-065810-002-0840ND
2017-07-065810-002-0905ND
2017-08-295810-002-0810ND
2017-09-075810-002-1010ND
2017-09-075810-004-1040ND
2017-10-045810-002-0920ND
2017-10-045810-004-0945ND
2017-11-085810-002-0825ND
2017-11-085810-004-0900ND
2017-12-065810-002-0855ND
2017-12-065810-004-1030ND
2018-01-095810-004-0930ND
2018-01-095810-002-1000ND
2018-02-085810-002-0950ND
2018-02-085810-004-1015ND
2018-03-075810-002-1025ND
2018-03-075810-004-1025ND
2018-04-055810-004-1115ND
2018-04-055810-002-0945ND
2018-05-035810-004-0930ND
2018-05-035810-002-0900ND
2018-06-075810-004-1030ND
2018-06-075810-002-0845ND
2018-07-105810-004-1000ND
2018-07-105810-002-0915ND
2018-08-285810-004-0900ND
2018-08-285810-002-0900ND
2018-09-115810-004-1010ND
2018-09-115810-002-0930ND
2018-10-035810-004-0910ND
2018-10-035810-002-0845ND
2018-11-085810-002-0840ND
2018-11-085810-004-0905ND
2018-12-055810-002-0755ND
2018-12-055810-004-0955ND
2019-01-105810-002-1015ND
2019-01-105810-004-0945ND
2019-02-065810-002-1055ND
2019-02-065810-004-1020ND
2019-03-065810-002-0900ND
2019-03-065810-004-0925ND
2019-04-045810-002-0830ND
2019-04-045810-004-1010ND
2019-05-085810-002-0925ND
2019-05-085810-004-1000ND
2019-06-065810-002-0915ND
2019-06-065810-004-0940ND
2019-07-105810-002-0910ND
2019-07-105810-004-0935ND
2019-08-075810-004-1010ND
2019-08-075810-004-0800ND
2019-08-285810-004-1325ND
2019-08-285810-002-1350ND
2019-09-055810-004-0855ND
2019-09-055810-002-0940ND
2019-10-025810-002-0820ND
2019-10-025810-004-1020ND
2019-11-065810-002-1030ND
2019-11-065810-004-1050ND
2019-12-055810-004-0835ND
2019-12-055810-002-0805ND