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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Rubidoux Community SD

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

 

88

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
20155.70 ppb1613ND - 16.0 ppb
20160.300 ppb121ND - 3.60 ppb
20170.419 ppb162ND - 4.50 ppb
2018ND160ND
20190.131 ppb161ND - 2.10 ppb

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
2014-03-274790-804-1150ND
2014-03-274790-803-1110ND
2014-03-274790-802-1130ND
2014-03-274790-801-1050ND
2014-06-194790-804-1010ND
2014-06-194790-803-1040ND
2014-06-194790-802-1025ND
2014-06-194790-801-1055ND
2014-12-094790-804-1130ND
2014-12-094790-803-1050ND
2014-12-094790-802-1110ND
2014-12-094790-801-1030ND
2015-02-254790-802-11206.80 ppb
2015-02-254790-803-11053.30 ppb
2015-02-254790-804-11354.60 ppb
2015-02-254790-801-10504.40 ppb
2015-05-194790-804-11354.80 ppb
2015-05-194790-803-08402.80 ppb
2015-05-194790-802-112016.0 ppb
2015-05-194790-801-0810ND
2015-08-194790-802-114512.0 ppb
2015-08-194790-801-121515.0 ppb
2015-08-194790-804-11305.30 ppb
2015-08-194790-803-12009.20 ppb
2015-12-224790-804-0930ND
2015-12-224790-802-0950ND
2015-12-224790-801-10304.00 ppb
2015-12-224790-803-10103.00 ppb
2016-06-014790-801-0830ND
2016-06-014790-804-1115ND
2016-06-014790-803-0800ND
2016-06-014790-802-1145ND
2016-08-104790-801-1020ND
2016-08-104790-804-1105ND
2016-08-104790-803-1035ND
2016-08-104790-802-10503.60 ppb
2016-12-074790-802-0915ND
2016-12-074790-801-0855ND
2016-12-074790-804-0930ND
2016-12-074790-803-0835ND
2017-03-164790-802-1130ND
2017-03-164790-804-1145ND
2017-03-164790-803-1115ND
2017-03-164790-801-1100ND
2017-06-144790-804-1015ND
2017-06-144790-803-0935ND
2017-06-144790-801-0920ND
2017-06-144790-802-1000ND
2017-08-304790-801-0915ND
2017-08-304790-802-09504.50 ppb
2017-08-304790-804-1005ND
2017-08-304790-803-09302.20 ppb
2017-12-074790-803-0950ND
2017-12-074790-804-0920ND
2017-12-074790-801-1005ND
2017-12-074790-802-0935ND
2018-02-154790-803-0945ND
2018-02-154790-804-0900ND
2018-02-154790-801-0930ND
2018-02-154790-802-0915ND
2018-06-214790-801-0820ND
2018-06-214790-804-0915ND
2018-06-214790-802-0900ND
2018-06-214790-803-0840ND
2018-09-064790-802-0950ND
2018-09-064790-801-0915ND
2018-09-064790-804-1005ND
2018-09-064790-803-0930ND
2018-11-144790-801-0920ND
2018-11-144790-802-1105ND
2018-11-144790-804-1120ND
2018-11-144790-803-0940ND
2019-02-214790-804-1055ND
2019-02-214790-802-1115ND
2019-02-214790-803-1000ND
2019-02-214790-801-0940ND
2019-05-084790-804-1020ND
2019-05-084790-803-0935ND
2019-05-084790-802-0955ND
2019-05-084790-801-0920ND
2019-09-184790-801-0920ND
2019-09-184790-804-1035ND
2019-09-184790-803-0940ND
2019-09-184790-802-1000ND
2019-12-034790-801-0750ND
2019-12-034790-804-1030ND
2019-12-034790-803-0735ND
2019-12-034790-802-10102.10 ppb