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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

Manhattan Beach Water Department

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.

 

89

Samples

0

Samples exceeding legal limit (MCL)

52

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.308 ppb123ND - 1.70 ppb
20131.95 ppb128ND - 5.30 ppb
20144.21 ppb1715ND - 14.2 ppb
20150.719 ppb167ND - 2.70 ppb
20161.09 ppb1610ND - 2.50 ppb
20171.11 ppb169ND - 2.60 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
2012-04-303761-800-09001.000 ppb
2012-04-303761-801-09201.70 ppb
2012-04-303761-802-0830ND
2012-04-303761-803-0755ND
2012-07-263761-801-10581.000 ppb
2012-07-263761-802-0808ND
2012-07-263761-800-0854ND
2012-07-263761-803-0658ND
2012-10-243761-802-0830ND
2012-10-243761-801-1050ND
2012-10-243761-800-0927ND
2012-10-243761-803-0715ND
2013-01-233761-803-1154ND
2013-01-233761-800-0836ND
2013-01-233761-801-0936ND
2013-01-233761-802-1223ND
2013-04-243761-800-10001.90 ppb
2013-04-243761-801-10461.60 ppb
2013-04-243761-803-12112.30 ppb
2013-04-243761-802-08365.30 ppb
2013-07-123761-801-09282.30 ppb
2013-07-123761-800-08422.40 ppb
2013-07-123761-803-07503.60 ppb
2013-07-123761-802-08174.00 ppb
2014-01-093761-803-07251.10 ppb
2014-01-093761-801-09305.00 ppb
2014-01-093761-802-08301.50 ppb
2014-01-093761-800-09501.20 ppb
2014-04-303761-801-09228.10 ppb
2014-04-303761-802-10271.70 ppb
2014-04-303761-803-08301.50 ppb
2014-04-303761-800-09354.30 ppb
2014-07-183761-801-091514.2 ppb
2014-07-183761-803-09407.80 ppb
2014-07-183761-800-084512.7 ppb
2014-07-183761-802-08206.30 ppb
2014-10-223761-802-0802ND
2014-10-223761-800-09152.00 ppb
2014-10-223761-803-0821ND
2014-10-223761-801-10062.50 ppb
2014-12-113761-004-16001.60 ppb
2015-01-073761-803-11551.30 ppb
2015-01-073761-802-1100ND
2015-01-073761-801-1030ND
2015-01-073761-800-0930ND
2015-04-073761-800-08391.30 ppb
2015-04-073761-801-0824ND
2015-04-073761-802-10501.10 ppb
2015-04-073761-803-1107ND
2015-07-163761-800-08151.40 ppb
2015-07-163761-801-08302.70 ppb
2015-07-163761-802-08001.80 ppb
2015-07-163761-803-07451.90 ppb
2015-10-223761-803-0822ND
2015-10-223761-800-1016ND
2015-10-223761-801-1100ND
2015-10-223761-802-1220ND
2016-01-213761-802-1143ND
2016-01-213761-803-0917ND
2016-01-213761-801-1215ND
2016-01-213761-800-1112ND
2016-04-143761-802-09351.30 ppb
2016-04-143761-800-10222.50 ppb
2016-04-143761-803-09101.50 ppb
2016-04-143761-801-11102.50 ppb
2016-07-143761-800-10011.20 ppb
2016-07-143761-802-1130ND
2016-07-143761-803-0855ND
2016-07-143761-801-10371.60 ppb
2016-10-253761-802-08261.80 ppb
2016-10-253761-803-08151.70 ppb
2016-10-253761-800-08501.60 ppb
2016-10-253761-801-09061.80 ppb
2017-01-183761-801-11281.90 ppb
2017-01-183761-800-10451.80 ppb
2017-01-183761-803-13001.70 ppb
2017-01-183761-802-10051.70 ppb
2017-04-203761-801-10122.50 ppb
2017-04-203761-803-08202.40 ppb
2017-04-203761-800-09302.60 ppb
2017-04-203761-802-08562.10 ppb
2017-07-193761-801-1050ND
2017-07-193761-800-1040ND
2017-07-193761-802-0959ND
2017-07-193761-803-0935ND
2017-10-253761-803-0934ND
2017-10-253761-800-1002ND
2017-10-253761-801-10251.000 ppb
2017-10-253761-802-1053ND