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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

California Water Service Company - Hermosa / Redondo Beach

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

 

195

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.213 ppb323ND - 2.60 ppb
2015ND320ND
2016ND320ND
20170.0625 ppb321ND - 2.00 ppb
2018ND350ND
20190.172 ppb322ND - 3.10 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
2014-03-045810-800-1155ND
2014-03-045810-801-0921ND
2014-03-045810-802-0910ND
2014-03-045810-803-1419ND
2014-03-045810-804-0848ND
2014-03-045810-805-1504ND
2014-03-045810-806-1035ND
2014-03-045810-807-1428ND
2014-06-035810-800-1242ND
2014-06-035810-801-0947ND
2014-06-035810-802-0935ND
2014-06-035810-803-1437ND
2014-06-035810-804-0912ND
2014-06-035810-805-1525ND
2014-06-035810-806-1052ND
2014-06-035810-807-1448ND
2014-09-025810-800-1300ND
2014-09-025810-801-1025ND
2014-09-025810-802-1010ND
2014-09-025810-803-1500ND
2014-09-025810-804-09402.10 ppb
2014-09-025810-805-15252.10 ppb
2014-09-025810-806-11302.60 ppb
2014-09-025810-807-1445ND
2014-12-025810-800-1335ND
2014-12-025810-801-1050ND
2014-12-025810-802-1037ND
2014-12-025810-803-1318ND
2014-12-025810-804-1012ND
2014-12-025810-805-1421ND
2014-12-025810-806-1015ND
2014-12-025810-807-1336ND
2015-03-035810-800-1150ND
2015-03-035810-801-0946ND
2015-03-035810-802-0934ND
2015-03-035810-803-1431ND
2015-03-035810-804-0957ND
2015-03-035810-805-1521ND
2015-03-035810-806-1056ND
2015-03-035810-807-1446ND
2015-06-025810-800-1242ND
2015-06-025810-801-1051ND
2015-06-025810-802-1034ND
2015-06-025810-803-1443ND
2015-06-025810-804-0932ND
2015-06-025810-805-1520ND
2015-06-025810-806-1131ND
2015-06-025810-807-1533ND
2015-09-085810-800-1144ND
2015-09-085810-801-1000ND
2015-09-085810-802-0943ND
2015-09-085810-803-1405ND
2015-09-085810-804-0915ND
2015-09-085810-805-1448ND
2015-09-085810-806-1053ND
2015-09-085810-807-1419ND
2015-12-085810-800-1300ND
2015-12-085810-801-1024ND
2015-12-085810-802-1015ND
2015-12-085810-803-1457ND
2015-12-085810-804-0952ND
2015-12-085810-805-1536ND
2015-12-085810-806-1128ND
2015-12-085810-807-1506ND
2016-03-085810-800-1300ND
2016-03-085810-801-1010ND
2016-03-085810-802-0955ND
2016-03-085810-803-1454ND
2016-03-085810-804-0932ND
2016-03-085810-805-1540ND
2016-03-085810-806-1113ND
2016-03-085810-807-1507ND
2016-06-075810-800-1227ND
2016-06-075810-801-1027ND
2016-06-075810-802-1019ND
2016-06-075810-803-1433ND
2016-06-075810-804-0955ND
2016-06-075810-805-1509ND
2016-06-075810-806-1527ND
2016-06-075810-807-1441ND
2016-09-065810-800-0943ND
2016-09-065810-801-0921ND
2016-09-065810-802-0914ND
2016-09-065810-803-1045ND
2016-09-065810-804-0902ND
2016-09-065810-805-1022ND
2016-09-065810-806-1007ND
2016-09-065810-807-1101ND
2016-12-065810-800-1147ND
2016-12-065810-801-0948ND
2016-12-065810-802-0936ND
2016-12-065810-803-1439ND
2016-12-065810-804-0900ND
2016-12-065810-805-1519ND
2016-12-065810-806-1056ND
2016-12-065810-807-1454ND
2017-03-075810-800-1346ND
2017-03-075810-801-1049ND
2017-03-075810-802-1025ND
2017-03-075810-803-1529ND
2017-03-075810-804-1004ND
2017-03-075810-805-1552ND
2017-03-075810-806-1147ND
2017-03-075810-807-1600ND
2017-06-065810-800-11472.00 ppb
2017-06-065810-801-1010ND
2017-06-065810-802-1000ND
2017-06-065810-803-1448ND
2017-06-065810-804-0934ND
2017-06-065810-805-1515ND
2017-06-065810-806-1109ND
2017-06-065810-807-1440ND
2017-09-055810-800-1258ND
2017-09-055810-801-0956ND
2017-09-055810-802-0943ND
2017-09-055810-803-1447ND
2017-09-055810-804-0914ND
2017-09-055810-805-1526ND
2017-09-055810-806-1112ND
2017-09-055810-807-1453ND
2017-12-065810-800-1020ND
2017-12-065810-801-0950ND
2017-12-065810-802-0940ND
2017-12-065810-803-1120ND
2017-12-065810-804-0920ND
2017-12-065810-805-1155ND
2017-12-065810-806-1005ND
2017-12-065810-807-1135ND
2018-01-165810-807-1437ND
2018-03-065810-800-1242ND
2018-03-065810-801-1005ND
2018-03-065810-802-0952ND
2018-03-065810-803-1443ND
2018-03-065810-804-0915ND
2018-03-065810-805-1539ND
2018-03-065810-806-1103ND
2018-03-065810-807-1455ND
2018-06-055810-800-1325ND
2018-06-055810-801-1042ND
2018-06-055810-802-1024ND
2018-06-055810-803-1134ND
2018-06-055810-804-0943ND
2018-06-055810-805-1350ND
2018-06-055810-806-1425ND
2018-06-055810-807-1155ND
2018-07-279590-001-0935ND
2018-09-045810-800-1240ND
2018-09-045810-801-0950ND
2018-09-045810-802-0941ND
2018-09-045810-803-1441ND
2018-09-045810-804-0910ND
2018-09-045810-805-1522ND
2018-09-045810-806-1100ND
2018-09-045810-807-1447ND
2018-12-045810-800-1033ND
2018-12-045810-801-1002ND
2018-12-045810-802-0944ND
2018-12-045810-803-1412ND
2018-12-045810-804-0915ND
2018-12-045810-805-1500ND
2018-12-045810-806-1214ND
2018-12-045810-807-1403ND
2018-12-209590-005-1245ND
2019-03-055810-800-0940ND
2019-03-055810-801-1019ND
2019-03-055810-802-10002.40 ppb
2019-03-055810-803-11153.10 ppb
2019-03-055810-804-1040ND
2019-03-055810-805-1218ND
2019-03-055810-806-1156ND
2019-03-055810-807-1136ND
2019-06-045810-800-1238ND
2019-06-045810-801-1002ND
2019-06-045810-802-0946ND
2019-06-045810-803-1436ND
2019-06-045810-804-0918ND
2019-06-045810-805-1529ND
2019-06-045810-806-1109ND
2019-06-045810-807-1451ND
2019-09-035810-800-1224ND
2019-09-035810-801-1033ND
2019-09-035810-802-1022ND
2019-09-035810-803-1432ND
2019-09-035810-804-0959ND
2019-09-035810-805-1537ND
2019-09-035810-806-1138ND
2019-09-035810-807-1449ND
2019-12-035810-800-1132ND
2019-12-035810-801-1001ND
2019-12-035810-802-0952ND
2019-12-035810-803-1320ND
2019-12-035810-804-0930ND
2019-12-035810-805-1410ND
2019-12-035810-806-1043ND
2019-12-035810-807-1343ND