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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Santa Margarita Water District

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
2014ND320ND
2015ND320ND
2016ND320ND
2017ND320ND
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
2014-01-071805-801-0700ND
2014-01-071805-802-0700ND
2014-01-071805-803-0700ND
2014-01-071805-804-0700ND
2014-01-071805-805-0700ND
2014-01-071805-806-0700ND
2014-01-071805-807-0700ND
2014-01-071805-808-0700ND
2014-04-031805-801-0730ND
2014-04-031805-802-0730ND
2014-04-031805-803-0730ND
2014-04-031805-804-0730ND
2014-04-031805-805-0730ND
2014-04-031805-806-0730ND
2014-04-031805-807-0730ND
2014-04-031805-808-0730ND
2014-07-011805-801-0000ND
2014-07-011805-802-0000ND
2014-07-011805-803-0000ND
2014-07-011805-804-0000ND
2014-07-011805-805-0000ND
2014-07-011805-806-0000ND
2014-07-011805-807-0000ND
2014-07-011805-808-0000ND
2014-10-071805-801-0000ND
2014-10-071805-802-0000ND
2014-10-071805-803-0000ND
2014-10-071805-804-0000ND
2014-10-071805-805-0000ND
2014-10-071805-806-0000ND
2014-10-071805-807-0000ND
2014-10-071805-808-0000ND
2015-01-061805-801-0000ND
2015-01-061805-802-0000ND
2015-01-061805-803-0000ND
2015-01-061805-804-0000ND
2015-01-061805-805-0000ND
2015-01-061805-806-0000ND
2015-01-061805-807-0000ND
2015-01-061805-808-0000ND
2015-04-061805-801-0949ND
2015-04-061805-802-0958ND
2015-04-061805-803-1014ND
2015-04-061805-804-1051ND
2015-04-061805-805-1333ND
2015-04-061805-806-1507ND
2015-04-061805-807-1422ND
2015-04-061805-808-0849ND
2015-07-071805-801-0000ND
2015-07-071805-802-0000ND
2015-07-071805-803-0000ND
2015-07-071805-804-0000ND
2015-07-081805-805-0000ND
2015-07-081805-806-0000ND
2015-07-081805-807-0000ND
2015-07-091805-808-0000ND
2015-10-051805-801-0842ND
2015-10-051805-802-0858ND
2015-10-051805-803-0915ND
2015-10-051805-804-0957ND
2015-10-051805-805-1331ND
2015-10-051805-806-1545ND
2015-10-051805-807-1529ND
2015-10-071805-808-1103ND
2016-01-051805-801-0850ND
2016-01-051805-802-0904ND
2016-01-051805-803-0918ND
2016-01-051805-804-0953ND
2016-01-051805-805-1239ND
2016-01-051805-806-1551ND
2016-01-051805-807-1449ND
2016-01-061805-808-1204ND
2016-04-139590-801-0938ND
2016-04-139590-802-0955ND
2016-04-139590-803-1014ND
2016-04-139590-804-1520ND
2016-04-139590-805-1430ND
2016-04-139590-806-1622ND
2016-04-139590-807-1528ND
2016-04-149590-808-1054ND
2016-07-079590-801-1330ND
2016-07-079590-802-1350ND
2016-07-079590-803-1410ND
2016-07-079590-804-1425ND
2016-07-079590-805-1500ND
2016-07-079590-806-1530ND
2016-07-079590-807-1515ND
2016-07-079590-808-1255ND
2016-10-069590-801-1203ND
2016-10-069590-802-1332ND
2016-10-069590-803-1352ND
2016-10-069590-804-1048ND
2016-10-069590-805-1113ND
2016-10-069590-806-1416ND
2016-10-069590-807-1135ND
2016-10-069590-808-1000ND
2017-01-069590-801-1002ND
2017-01-069590-802-1023ND
2017-01-069590-803-1050ND
2017-01-069590-804-1118ND
2017-01-069590-805-1140ND
2017-01-069590-806-1227ND
2017-01-069590-807-1252ND
2017-01-069590-808-1157ND
2017-04-069590-801-0850ND
2017-04-069590-802-0915ND
2017-04-069590-803-0935ND
2017-04-069590-804-0958ND
2017-04-069590-805-1030ND
2017-04-069590-806-1109ND
2017-04-069590-807-1050ND
2017-04-069590-808-0937ND
2017-07-069590-801-1032ND
2017-07-069590-802-1050ND
2017-07-069590-803-1107ND
2017-07-069590-804-1208ND
2017-07-069590-805-1300ND
2017-07-069590-806-1338ND
2017-07-069590-807-1242ND
2017-07-069590-808-0820ND
2017-10-059590-801-1042ND
2017-10-059590-802-1055ND
2017-10-059590-803-1108ND
2017-10-059590-804-1126ND
2017-10-059590-805-1225ND
2017-10-059590-806-1259ND
2017-10-059590-807-1245ND
2017-10-059590-808-0857ND
2018-01-049590-801-1330ND
2018-01-049590-802-1311ND
2018-01-049590-803-1251ND
2018-01-049590-804-1225ND
2018-01-049590-805-1157ND
2018-01-049590-806-1111ND
2018-01-049590-807-1128ND
2018-01-049590-808-0828ND
2018-04-059590-801-1009ND
2018-04-059590-802-1021ND
2018-04-059590-803-1039ND
2018-04-059590-804-1058ND
2018-04-059590-805-1329ND
2018-04-059590-806-1253ND
2018-04-059590-807-1310ND
2018-04-059590-808-0828ND
2018-07-039590-801-1252ND
2018-07-039590-802-1239ND
2018-07-039590-803-1225ND
2018-07-039590-804-1156ND
2018-07-039590-805-1116ND
2018-07-039590-806-1023ND
2018-07-039590-807-1047ND
2018-07-039590-808-0950ND
2018-10-049590-801-1004ND
2018-10-049590-802-1015ND
2018-10-049590-803-1028ND
2018-10-049590-804-1046ND
2018-10-049590-805-1106ND
2018-10-049590-806-1153ND
2018-10-049590-807-1131ND
2018-10-049590-808-0928ND
2019-01-109590-801-0956ND
2019-01-109590-802-1017ND
2019-01-109590-803-1040ND
2019-01-109590-804-1101ND
2019-01-109590-805-1259ND
2019-01-109590-806-1343ND
2019-01-109590-808-0828ND
2019-01-159590-807-1350ND
2019-04-049590-801-0823ND
2019-04-049590-802-0837ND
2019-04-049590-803-0900ND
2019-04-049590-804-0930ND
2019-04-049590-805-0956ND
2019-04-049590-806-1110ND
2019-04-049590-807-1041ND
2019-04-049590-808-1241ND
2019-07-259590-801-1043ND
2019-07-259590-802-1059ND
2019-07-259590-803-1125ND
2019-07-259590-804-1147ND
2019-07-259590-805-1300ND
2019-07-259590-806-1357ND
2019-07-259590-807-1326ND
2019-07-259590-808-0932ND
2019-10-089590-801-1103ND
2019-10-089590-802-1120ND
2019-10-089590-803-1159ND
2019-10-089590-804-1220ND
2019-10-089590-805-1314ND
2019-10-089590-806-1441ND
2019-10-089590-807-1403ND
2019-10-089590-808-0851ND