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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

El Segundo Water Department

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

 

192

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
20140.238 ppb323ND - 3.10 ppb
20150.0719 ppb321ND - 2.30 ppb
2016ND320ND
20170.656 ppb327ND - 3.40 ppb
2018ND320ND
2019ND320ND

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
2014-01-083761-800-0845ND
2014-01-083761-801-0754ND
2014-01-083761-802-0943ND
2014-01-083761-803-1007ND
2014-01-083761-804-1111ND
2014-01-083761-805-1124ND
2014-01-083761-806-1140ND
2014-01-083761-807-1207ND
2014-04-023761-800-0752ND
2014-04-023761-801-0703ND
2014-04-023761-802-0914ND
2014-04-023761-803-0933ND
2014-04-023761-804-0949ND
2014-04-023761-805-1043ND
2014-04-023761-806-1026ND
2014-04-023761-807-1103ND
2014-07-023761-800-0857ND
2014-07-023761-801-0726ND
2014-07-023761-802-0917ND
2014-07-023761-803-0946ND
2014-07-023761-804-1030ND
2014-07-023761-805-1132ND
2014-07-023761-806-1118ND
2014-07-023761-807-1148ND
2014-10-013761-800-08052.10 ppb
2014-10-013761-801-0727ND
2014-10-013761-802-09203.10 ppb
2014-10-013761-803-09382.40 ppb
2014-10-013761-804-1003ND
2014-10-013761-805-1027ND
2014-10-013761-806-1040ND
2014-10-013761-807-1113ND
2015-01-143761-800-0800ND
2015-01-143761-801-0733ND
2015-01-143761-802-0925ND
2015-01-143761-803-0947ND
2015-01-143761-804-1017ND
2015-01-143761-805-1119ND
2015-01-143761-806-1100ND
2015-01-143761-807-1130ND
2015-04-013761-800-0745ND
2015-04-013761-801-07172.30 ppb
2015-04-013761-802-0915ND
2015-04-013761-803-0935ND
2015-04-013761-804-0953ND
2015-04-013761-805-1025ND
2015-04-013761-806-1037ND
2015-04-013761-807-1103ND
2015-07-153761-800-0758ND
2015-07-153761-801-0715ND
2015-07-153761-802-0910ND
2015-07-153761-803-0930ND
2015-07-153761-804-1000ND
2015-07-153761-805-1020ND
2015-07-153761-806-1037ND
2015-07-153761-807-1110ND
2015-10-073761-800-0830ND
2015-10-073761-801-0752ND
2015-10-073761-802-0922ND
2015-10-073761-803-0937ND
2015-10-073761-804-1010ND
2015-10-073761-805-1017ND
2015-10-073761-806-1040ND
2015-10-073761-807-1105ND
2016-01-133761-800-0745ND
2016-01-133761-801-0712ND
2016-01-133761-802-0856ND
2016-01-133761-803-0928ND
2016-01-133761-804-0949ND
2016-01-133761-805-1002ND
2016-01-133761-806-1017ND
2016-01-133761-807-1050ND
2016-04-133761-800-0838ND
2016-04-133761-801-0749ND
2016-04-133761-802-1027ND
2016-04-133761-803-1053ND
2016-04-133761-804-1131ND
2016-04-133761-805-1147ND
2016-04-133761-806-1210ND
2016-04-133761-807-1235ND
2016-07-063761-800-0800ND
2016-07-063761-801-0730ND
2016-07-063761-802-0923ND
2016-07-063761-803-0943ND
2016-07-063761-804-1010ND
2016-07-063761-805-1026ND
2016-07-063761-806-1041ND
2016-07-063761-807-1107ND
2016-10-053761-800-0806ND
2016-10-053761-801-0725ND
2016-10-053761-802-0945ND
2016-10-053761-803-0957ND
2016-10-053761-804-1012ND
2016-10-053761-805-1050ND
2016-10-053761-806-1034ND
2016-10-053761-807-1100ND
2017-01-043761-800-0725ND
2017-01-043761-801-0805ND
2017-01-043761-802-0915ND
2017-01-043761-803-0930ND
2017-01-043761-804-0955ND
2017-01-043761-805-1010ND
2017-01-043761-806-1020ND
2017-01-043761-807-1045ND
2017-04-053761-800-0740ND
2017-04-053761-801-0815ND
2017-04-053761-802-0940ND
2017-04-053761-803-0955ND
2017-04-053761-804-1035ND
2017-04-053761-805-1045ND
2017-04-053761-806-1100ND
2017-04-053761-807-1110ND
2017-07-123761-800-0804ND
2017-07-123761-801-0741ND
2017-07-123761-802-0926ND
2017-07-123761-803-0959ND
2017-07-123761-804-1016ND
2017-07-123761-805-1030ND
2017-07-123761-806-1115ND
2017-07-123761-807-1133ND
2017-10-043761-800-07573.00 ppb
2017-10-043761-801-08103.10 ppb
2017-10-043761-802-09502.60 ppb
2017-10-043761-803-10153.10 ppb
2017-10-043761-804-10543.20 ppb
2017-10-043761-805-11103.40 ppb
2017-10-043761-806-11402.60 ppb
2017-10-043761-807-1212ND
2018-01-033761-800-0706ND
2018-01-033761-801-0736ND
2018-01-033761-802-0835ND
2018-01-033761-803-0845ND
2018-01-033761-804-0856ND
2018-01-033761-805-0910ND
2018-01-033761-806-0937ND
2018-01-033761-807-0950ND
2018-07-183761-800-0715ND
2018-07-183761-801-0737ND
2018-07-183761-802-0843ND
2018-07-183761-803-0900ND
2018-07-183761-804-0922ND
2018-07-183761-805-0932ND
2018-07-183761-806-1012ND
2018-07-183761-807-1026ND
2018-10-033761-800-0821ND
2018-10-033761-801-0802ND
2018-10-033761-802-0908ND
2018-10-033761-803-0921ND
2018-10-033761-804-0938ND
2018-10-033761-805-0948ND
2018-10-033761-806-1007ND
2018-10-033761-807-1028ND
2018-12-044790-800-0845ND
2018-12-044790-801-1158ND
2018-12-044790-802-1045ND
2018-12-044790-803-1050ND
2018-12-044790-804-1054ND
2018-12-044790-805-1103ND
2018-12-044790-806-1114ND
2018-12-044790-807-1136ND
2019-01-093761-800-1015ND
2019-01-093761-801-0625ND
2019-01-093761-802-1035ND
2019-01-093761-803-1046ND
2019-01-093761-804-1056ND
2019-01-093761-805-1109ND
2019-01-093761-806-1117ND
2019-01-093761-807-1124ND
2019-04-033761-800-0824ND
2019-04-033761-801-0847ND
2019-04-033761-802-0936ND
2019-04-033761-803-0945ND
2019-04-033761-804-0959ND
2019-04-033761-805-1007ND
2019-04-033761-806-1019ND
2019-04-033761-807-1038ND
2019-07-033761-800-0809ND
2019-07-033761-801-0737ND
2019-07-033761-802-0910ND
2019-07-033761-803-0925ND
2019-07-033761-804-0950ND
2019-07-033761-805-1000ND
2019-07-033761-806-1014ND
2019-07-033761-807-1034ND
2019-10-023761-800-0747ND
2019-10-023761-801-0724ND
2019-10-023761-802-0830ND
2019-10-023761-803-0842ND
2019-10-023761-804-0858ND
2019-10-023761-805-0910ND
2019-10-023761-806-0920ND
2019-10-023761-807-0938ND