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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

City of Carlsbad

Trichloroacetic 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.

 

150

Samples

0

Samples exceeding legal limit (MCL)

92

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.0556 ppb181ND - 1.000 ppb
20131.27 ppb2418ND - 3.00 ppb
20141.99 ppb3227ND - 6.50 ppb
20152.20 ppb3228ND - 6.00 ppb
20160.563 ppb329ND - 4.70 ppb
20170.573 ppb3010ND - 2.10 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for trichloroacetic 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.a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2013-02-202706-900-1010ND
2013-02-202706-901-10441.10 ppb
2013-02-202706-902-1112ND
2013-02-202706-903-1056ND
2013-02-202706-904-11281.40 ppb
2013-02-202706-905-11551.30 ppb
2013-02-202706-906-09551.60 ppb
2013-02-202706-907-10221.10 ppb
2013-05-082706-900-10111.50 ppb
2013-05-082706-901-09401.80 ppb
2013-05-082706-902-09001.30 ppb
2013-05-082706-903-09142.10 ppb
2013-05-082706-904-08301.90 ppb
2013-05-082706-905-10521.70 ppb
2013-05-082706-906-10311.40 ppb
2013-05-082706-907-09583.00 ppb
2013-11-142706-900-08292.20 ppb
2013-11-142706-901-0859ND
2013-11-142706-902-09451.90 ppb
2013-11-142706-903-09231.60 ppb
2013-11-142706-904-0700ND
2013-11-142706-905-07422.40 ppb
2013-11-142706-906-08001.20 ppb
2013-11-142706-907-0846ND
2014-02-122706-901-13461.50 ppb
2014-02-122706-902-14103.90 ppb
2014-02-122706-903-13515.00 ppb
2014-02-122706-904-12194.20 ppb
2014-02-122706-904-13084.20 ppb
2014-02-122706-905-12456.50 ppb
2014-02-122706-906-13264.30 ppb
2014-02-122706-907-13163.70 ppb
2014-05-142706-900-09171.50 ppb
2014-05-142706-901-10241.20 ppb
2014-05-142706-903-10471.30 ppb
2014-05-142706-905-08451.30 ppb
2014-05-142706-906-09551.50 ppb
2014-05-142706-907-09361.50 ppb
2014-05-152706-902-10192.70 ppb
2014-05-152706-904-08452.90 ppb
2014-08-152706-900-14092.00 ppb
2014-08-152706-901-1451ND
2014-08-152706-902-1515ND
2014-08-152706-903-1502ND
2014-08-152706-904-13371.50 ppb
2014-08-152706-905-15581.80 ppb
2014-08-152706-906-14321.10 ppb
2014-08-152706-907-14201.40 ppb
2014-11-042706-900-08481.50 ppb
2014-11-042706-901-09411.40 ppb
2014-11-042706-902-1021ND
2014-11-042706-903-1002ND
2014-11-042706-904-07331.20 ppb
2014-11-042706-905-08001.60 ppb
2014-11-042706-906-09191.20 ppb
2014-11-042706-907-09021.70 ppb
2015-02-102706-900-13536.00 ppb
2015-02-102706-901-13254.60 ppb
2015-02-102706-902-14084.20 ppb
2015-02-102706-903-14504.40 ppb
2015-02-102706-904-11413.90 ppb
2015-02-102706-905-12523.60 ppb
2015-02-102706-906-13103.90 ppb
2015-02-102706-907-13344.50 ppb
2015-05-132706-900-11091.90 ppb
2015-05-132706-901-11341.60 ppb
2015-05-132706-902-12091.50 ppb
2015-05-132706-903-11511.40 ppb
2015-05-132706-904-10111.40 ppb
2015-05-132706-905-10361.30 ppb
2015-05-132706-906-10511.50 ppb
2015-05-132706-907-11211.90 ppb
2015-08-252706-900-0945ND
2015-08-252706-901-10151.10 ppb
2015-08-252706-902-10481.20 ppb
2015-08-252706-903-1033ND
2015-08-252706-904-07351.20 ppb
2015-08-252706-905-08101.90 ppb
2015-08-252706-906-0920ND
2015-08-252706-907-09551.20 ppb
2015-11-172706-900-12583.50 ppb
2015-11-172706-901-13383.00 ppb
2015-11-172706-904-11101.10 ppb
2015-11-172706-905-11591.20 ppb
2015-11-172706-906-12421.60 ppb
2015-11-172706-907-13133.40 ppb
2015-11-182706-902-0930ND
2015-11-182706-903-09032.40 ppb
2016-02-032706-900-09421.50 ppb
2016-02-032706-901-11201.40 ppb
2016-02-032706-902-12301.30 ppb
2016-02-032706-903-11441.40 ppb
2016-02-032706-904-0825ND
2016-02-032706-905-0856ND
2016-02-032706-906-09211.60 ppb
2016-02-032706-907-10051.50 ppb
2016-05-092706-900-0906ND
2016-05-092706-901-0953ND
2016-05-092706-902-1040ND
2016-05-092706-903-10154.70 ppb
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
2016-08-090007-903-14351.60 ppb
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
2016-11-082706-901-1508ND
2016-11-082706-902-1457ND
2016-11-082706-903-15223.00 ppb
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
2017-05-100007-900-09541.70 ppb
2017-05-100007-901-10451.70 ppb
2017-05-100007-902-11211.60 ppb
2017-05-100007-903-11051.80 ppb
2017-05-100007-904-08051.80 ppb
2017-05-100007-905-08391.30 ppb
2017-05-100007-906-10201.80 ppb
2017-05-100007-907-10052.10 ppb
2017-08-170007-900-1155ND
2017-08-170007-901-1021ND
2017-08-170007-902-1054ND
2017-08-170007-903-10001.50 ppb
2017-08-170007-904-0926ND
2017-08-170007-905-09001.90 ppb
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