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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of Hemet

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

 

51

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
20150.375 ppb161ND - 6.00 ppb
2016N/A00N/A
2017ND120ND
2018ND120ND
2019ND70ND

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
2014-05-144790-804-0650ND
2014-05-144790-803-0845ND
2014-05-144790-802-0620ND
2014-05-144790-801-0550ND
2015-01-224790-801-1145ND
2015-01-224790-804-1110ND
2015-01-224790-803-1045ND
2015-01-224790-802-1125ND
2015-02-184790-801-0840ND
2015-02-184790-804-1015ND
2015-02-184790-803-1120ND
2015-02-184790-802-0900ND
2015-05-204790-802-09006.00 ppb
2015-05-204790-801-0945ND
2015-05-204790-804-0815ND
2015-05-204790-803-0720ND
2015-11-174790-802-0900ND
2015-11-174790-803-0730ND
2015-11-174790-801-0950ND
2015-11-174790-804-0815ND
2017-02-135810-801-1020ND
2017-02-135810-803-0740ND
2017-02-135810-804-0830ND
2017-02-135810-802-0930ND
2017-05-154790-801-1035ND
2017-05-154790-803-0710ND
2017-05-154790-802-1000ND
2017-05-154790-804-0815ND
2017-07-244790-804-0850ND
2017-07-244790-803-1115ND
2017-07-244790-801-0920ND
2017-07-244790-802-1035ND
2018-01-224790-804-0900ND
2018-01-224790-801-1010ND
2018-01-224790-803-0820ND
2018-01-224790-802-0940ND
2018-04-164790-803-0740ND
2018-04-164790-801-1110ND
2018-04-164790-802-1040ND
2018-04-164790-804-0840ND
2018-08-204790-803-0800ND
2018-08-204790-801-1110ND
2018-08-204790-802-1040ND
2018-08-204790-804-0850ND
2019-02-254790-801-0900ND
2019-02-254790-804-1100ND
2019-02-254790-803-1000ND
2019-02-254790-802-0910ND
2019-12-164790-804-1000ND
2019-12-164790-803-0840ND
2019-12-164790-802-1030ND