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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of Carlsbad

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

 

182

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
20141.87 ppb3215ND - 6.00 ppb
20150.653 ppb327ND - 3.60 ppb
20160.0625 ppb321ND - 2.00 ppb
2017ND300ND
2018ND320ND
2019ND240ND

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
2014-02-122706-901-13462.20 ppb
2014-02-122706-902-14103.90 ppb
2014-02-122706-903-13512.20 ppb
2014-02-122706-904-1219ND
2014-02-122706-904-1308ND
2014-02-122706-905-1245ND
2014-02-122706-906-13263.00 ppb
2014-02-122706-907-1316ND
2014-05-142706-900-0917ND
2014-05-142706-901-1024ND
2014-05-142706-903-1047ND
2014-05-142706-905-0845ND
2014-05-142706-906-0955ND
2014-05-142706-907-0936ND
2014-05-152706-902-1019ND
2014-05-152706-904-0845ND
2014-08-152706-900-14095.20 ppb
2014-08-152706-901-14516.00 ppb
2014-08-152706-902-15153.70 ppb
2014-08-152706-903-15025.40 ppb
2014-08-152706-904-13375.00 ppb
2014-08-152706-905-15585.20 ppb
2014-08-152706-906-14325.30 ppb
2014-08-152706-907-14205.50 ppb
2014-11-042706-900-08482.70 ppb
2014-11-042706-901-09412.10 ppb
2014-11-042706-902-1021ND
2014-11-042706-903-1002ND
2014-11-042706-904-0733ND
2014-11-042706-905-0800ND
2014-11-042706-906-0919ND
2014-11-042706-907-09022.30 ppb
2015-02-102706-900-1353ND
2015-02-102706-901-1325ND
2015-02-102706-902-1408ND
2015-02-102706-903-1450ND
2015-02-102706-904-1141ND
2015-02-102706-905-12522.20 ppb
2015-02-102706-906-1310ND
2015-02-102706-907-1334ND
2015-05-132706-900-1109ND
2015-05-132706-901-1134ND
2015-05-132706-902-1209ND
2015-05-132706-903-1151ND
2015-05-132706-904-1011ND
2015-05-132706-905-1036ND
2015-05-132706-906-1051ND
2015-05-132706-907-1121ND
2015-08-252706-900-0945ND
2015-08-252706-901-1015ND
2015-08-252706-902-1048ND
2015-08-252706-903-1033ND
2015-08-252706-904-0735ND
2015-08-252706-905-0810ND
2015-08-252706-906-0920ND
2015-08-252706-907-0955ND
2015-11-172706-900-12583.50 ppb
2015-11-172706-901-13382.90 ppb
2015-11-172706-904-1110ND
2015-11-172706-905-1159ND
2015-11-172706-906-12422.40 ppb
2015-11-172706-907-13133.20 ppb
2015-11-182706-902-09303.10 ppb
2015-11-182706-903-09033.60 ppb
2016-02-032706-900-0942ND
2016-02-032706-901-1120ND
2016-02-032706-902-1230ND
2016-02-032706-903-1144ND
2016-02-032706-904-0825ND
2016-02-032706-905-0856ND
2016-02-032706-906-0921ND
2016-02-032706-907-1005ND
2016-05-092706-900-0906ND
2016-05-092706-901-0953ND
2016-05-092706-902-1040ND
2016-05-092706-903-1015ND
2016-05-092706-904-0757ND
2016-05-092706-905-0821ND
2016-05-092706-906-0853ND
2016-05-092706-907-0927ND
2016-08-090007-900-1302ND
2016-08-090007-901-1412ND
2016-08-090007-902-1507ND
2016-08-090007-903-1435ND
2016-08-090007-904-1125ND
2016-08-090007-905-1146ND
2016-08-090007-906-1352ND
2016-08-090007-907-1331ND
2016-11-082706-900-1424ND
2016-11-082706-901-15082.00 ppb
2016-11-082706-902-1457ND
2016-11-082706-903-1522ND
2016-11-082706-904-1548ND
2016-11-082706-905-1348ND
2016-11-082706-906-1410ND
2016-11-082706-907-1440ND
2017-02-210007-900-1504ND
2017-02-210007-901-1425ND
2017-02-210007-902-1350ND
2017-02-210007-903-1410ND
2017-02-210007-904-1332ND
2017-02-210007-906-1527ND
2017-02-210007-907-1448ND
2017-05-100007-900-0954ND
2017-05-100007-901-1045ND
2017-05-100007-902-1121ND
2017-05-100007-903-1105ND
2017-05-100007-904-0805ND
2017-05-100007-905-0839ND
2017-05-100007-906-1020ND
2017-05-100007-907-1005ND
2017-08-170007-900-1155ND
2017-08-170007-901-1021ND
2017-08-170007-902-1054ND
2017-08-170007-903-1000ND
2017-08-170007-904-0926ND
2017-08-170007-905-0900ND
2017-08-170007-906-1122ND
2017-08-170007-907-1140ND
2017-11-060007-900-1339ND
2017-11-060007-901-1128ND
2017-11-060007-902-1400ND
2017-11-060007-903-1002ND
2017-11-060007-904-1218ND
2017-11-060007-906-1318ND
2017-11-060007-907-1153ND
2018-02-120007-900-1004ND
2018-02-120007-901-1100ND
2018-02-120007-902-1148ND
2018-02-120007-903-1127ND
2018-02-120007-904-0904ND
2018-02-120007-905-0833ND
2018-02-120007-906-0944ND
2018-02-120007-907-1035ND
2018-05-100007-900-0959ND
2018-05-100007-901-1109ND
2018-05-100007-902-0126ND
2018-05-100007-903-1132ND
2018-05-100007-904-0824ND
2018-05-100007-905-0205ND
2018-05-100007-906-0932ND
2018-05-100007-907-1030ND
2018-08-160007-900-0931ND
2018-08-160007-901-1019ND
2018-08-160007-902-1056ND
2018-08-160007-903-1038ND
2018-08-160007-904-0830ND
2018-08-160007-905-0848ND
2018-08-160007-906-0910ND
2018-08-160007-907-0942ND
2018-11-260007-900-1125ND
2018-11-260007-901-1303ND
2018-11-260007-902-1328ND
2018-11-260007-903-1240ND
2018-11-260007-904-0952ND
2018-11-260007-905-1025ND
2018-11-260007-906-1058ND
2018-11-260007-907-1400ND
2019-02-120007-900-1015ND
2019-02-120007-901-1107ND
2019-02-120007-902-1151ND
2019-02-120007-903-1129ND
2019-02-120007-904-0828ND
2019-02-120007-905-0904ND
2019-02-120007-906-0940ND
2019-02-120007-907-1033ND
2019-05-109590-900-0835ND
2019-05-109590-901-0911ND
2019-05-109590-902-0945ND
2019-05-109590-903-0926ND
2019-05-109590-904-0732ND
2019-05-109590-905-0753ND
2019-05-109590-906-0821ND
2019-05-109590-907-0843ND
2019-08-060007-900-1351ND
2019-08-060007-901-1250ND
2019-08-060007-902-1200ND
2019-08-060007-903-1224ND
2019-08-060007-904-1135ND
2019-08-060007-905-1432ND
2019-08-060007-906-1409ND
2019-08-060007-907-1330ND