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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

California Water Service Company - Dominguez

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.

 

179

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND160ND
20131.19 ppb321ND - 38.0 ppb
20140.0906 ppb321ND - 2.90 ppb
20150.0813 ppb321ND - 2.60 ppb
2016ND340ND
20170.630 ppb339ND - 2.90 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
2012-05-075810-031-1315ND
2012-05-075810-807-1416ND
2012-08-085810-800-1340ND
2012-08-085810-802-1300ND
2012-08-085810-803-1124ND
2012-08-085810-804-1053ND
2012-08-085810-805-1118ND
2012-08-085810-806-1035ND
2012-08-085810-807-1158ND
2012-11-075810-800-1306ND
2012-11-075810-802-1251ND
2012-11-075810-803-1142ND
2012-11-075810-804-1132ND
2012-11-075810-805-1205ND
2012-11-075810-806-1110ND
2012-11-075810-807-1045ND
2013-02-075810-800-1415ND
2013-02-075810-801-1428ND
2013-02-075810-802-1444ND
2013-02-075810-803-1515ND
2013-02-075810-804-1342ND
2013-02-075810-805-1321ND
2013-02-075810-806-1357ND
2013-02-075810-807-1501ND
2013-05-085810-800-1233ND
2013-05-085810-801-1305ND
2013-05-085810-802-1144ND
2013-05-085810-803-1115ND
2013-05-085810-804-1113ND
2013-05-085810-805-1150ND
2013-05-085810-806-1047ND
2013-05-085810-807-1128ND
2013-08-075810-800-1324ND
2013-08-075810-801-1400ND
2013-08-075810-802-1300ND
2013-08-075810-803-1140ND
2013-08-075810-804-1127ND
2013-08-075810-805-1155ND
2013-08-075810-806-1036ND
2013-08-075810-807-1104ND
2013-11-065810-800-1205ND
2013-11-065810-801-1323ND
2013-11-065810-802-114838.0 ppb
2013-11-065810-803-1116ND
2013-11-065810-804-1240ND
2013-11-065810-805-1310ND
2013-11-065810-806-1144ND
2013-11-065810-807-1202ND
2014-02-055810-800-1115ND
2014-02-055810-801-1038ND
2014-02-055810-802-1141ND
2014-02-055810-803-1305ND
2014-02-055810-804-1117ND
2014-02-055810-805-1145ND
2014-02-055810-806-1052ND
2014-02-055810-807-1024ND
2014-05-075810-800-1305ND
2014-05-075810-801-13392.90 ppb
2014-05-075810-802-1252ND
2014-05-075810-803-1148ND
2014-05-075810-804-1104ND
2014-05-075810-805-1118ND
2014-05-075810-806-1041ND
2014-05-075810-807-1025ND
2014-08-065810-800-1326ND
2014-08-065810-801-1413ND
2014-08-065810-802-1306ND
2014-08-065810-803-1134ND
2014-08-065810-804-1108ND
2014-08-065810-805-1134ND
2014-08-065810-806-1043ND
2014-08-065810-807-1018ND
2014-11-055810-800-1253ND
2014-11-055810-801-1329ND
2014-11-055810-802-1201ND
2014-11-055810-803-1133ND
2014-11-055810-804-1100ND
2014-11-055810-805-1123ND
2014-11-055810-806-1048ND
2014-11-055810-807-1507ND
2015-02-045810-800-1309ND
2015-02-045810-801-1351ND
2015-02-045810-802-1250ND
2015-02-045810-803-1135ND
2015-02-045810-804-1111ND
2015-02-045810-805-1138ND
2015-02-045810-806-1045ND
2015-02-045810-807-1019ND
2015-05-065810-800-1323ND
2015-05-065810-801-1346ND
2015-05-065810-802-1307ND
2015-05-065810-803-1232ND
2015-05-065810-804-1110ND
2015-05-065810-805-1130ND
2015-05-065810-806-1041ND
2015-05-065810-807-1017ND
2015-08-055810-800-1330ND
2015-08-055810-801-1406ND
2015-08-055810-802-1317ND
2015-08-055810-803-1159ND
2015-08-055810-804-1052ND
2015-08-055810-805-1117ND
2015-08-055810-806-1029ND
2015-08-055810-807-09562.60 ppb
2015-11-045810-800-1317ND
2015-11-045810-801-1340ND
2015-11-045810-802-1301ND
2015-11-045810-803-1200ND
2015-11-045810-804-1111ND
2015-11-045810-805-1128ND
2015-11-045810-806-1037ND
2015-11-045810-807-1012ND
2016-02-035810-800-1109ND
2016-02-035810-801-1038ND
2016-02-035810-802-1124ND
2016-02-035810-803-1244ND
2016-02-035810-804-1101ND
2016-02-035810-805-1129ND
2016-02-035810-806-1033ND
2016-02-035810-807-1010ND
2016-03-239590-018-1340ND
2016-05-045810-800-1305ND
2016-05-045810-801-1332ND
2016-05-045810-802-1248ND
2016-05-045810-803-1141ND
2016-05-045810-804-1057ND
2016-05-045810-805-1118ND
2016-05-045810-806-1026ND
2016-05-045810-807-1008ND
2016-08-035810-800-1308ND
2016-08-035810-801-1346ND
2016-08-035810-802-1246ND
2016-08-035810-803-1117ND
2016-08-035810-804-1110ND
2016-08-035810-805-1130ND
2016-08-035810-806-1045ND
2016-08-035810-807-1032ND
2016-11-095810-800-1048ND
2016-11-095810-801-1128ND
2016-11-095810-802-1154ND
2016-11-095810-803-1311ND
2016-11-095810-804-1040ND
2016-11-095810-805-1055ND
2016-11-095810-806-1023ND
2016-11-095810-807-1000ND
2016-12-289590-019-0930ND
2017-02-085810-800-1333ND
2017-02-085810-801-1409ND
2017-02-085810-802-1321ND
2017-02-085810-803-1245ND
2017-02-085810-804-1124ND
2017-02-085810-805-1245ND
2017-02-085810-806-1159ND
2017-02-085810-807-1129ND
2017-03-089590-019-1430ND
2017-05-035810-800-11552.10 ppb
2017-05-035810-801-1313ND
2017-05-035810-802-1143ND
2017-05-035810-803-11132.90 ppb
2017-05-035810-804-11262.20 ppb
2017-05-035810-805-11392.40 ppb
2017-05-035810-806-1106ND
2017-05-035810-807-10372.60 ppb
2017-08-095810-800-11442.00 ppb
2017-08-095810-801-1250ND
2017-08-095810-802-11312.30 ppb
2017-08-095810-803-1059ND
2017-08-095810-804-1130ND
2017-08-095810-805-1158ND
2017-08-095810-806-11102.30 ppb
2017-08-095810-807-10302.00 ppb
2017-11-085810-800-0904ND
2017-11-085810-801-0929ND
2017-11-085810-802-0956ND
2017-11-085810-803-1030ND
2017-11-085810-804-1027ND
2017-11-085810-805-1054ND
2017-11-085810-806-0959ND
2017-11-085810-807-0930ND