Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Trichloroacetic acid

Brown Deer Waterworks

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.

 

91

Samples

0

Samples exceeding legal limit (MCL)

86

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.655 ppb12120.390 ppb - 0.940 ppb
20130.714 ppb1613ND - 1.20 ppb
20141.11 ppb1513ND - 1.90 ppb
20150.996 ppb16160.560 ppb - 1.50 ppb
20160.898 ppb16160.400 ppb - 1.50 ppb
20171.07 ppb16160.640 ppb - 1.60 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
2012-06-056664860.700 ppb
2012-06-056664840.700 ppb
2012-06-056664830.710 ppb
2012-06-056664850.620 ppb
2012-09-056815600.390 ppb
2012-09-056815590.410 ppb
2012-09-056815620.430 ppb
2012-09-056815610.440 ppb
2012-12-056969660.800 ppb
2012-12-056969670.850 ppb
2012-12-056969650.870 ppb
2012-12-056969680.940 ppb
2013-03-06708310ND
2013-03-067083090.350 ppb
2013-03-067083080.220 ppb
2013-03-06708311ND
2013-06-047231701.000 ppb
2013-06-047231681.10 ppb
2013-06-047231711.10 ppb
2013-06-047231691.10 ppb
2013-08-267399011.10 ppb
2013-08-267399021.20 ppb
2013-08-267399001.20 ppb
2013-08-267399031.20 ppb
2013-12-037611180.800 ppb
2013-12-037611160.710 ppb
2013-12-037611170.350 ppb
2013-12-03761115ND
2014-03-047732650.310 ppb
2014-03-047732620.410 ppb
2014-03-047732640.410 ppb
2014-06-047945331.60 ppb
2014-06-047945311.80 ppb
2014-06-047945341.80 ppb
2014-06-047945321.90 ppb
2014-08-26813418ND
2014-08-268134170.940 ppb
2014-08-268134160.710 ppb
2014-08-26813415ND
2014-11-248330571.50 ppb
2014-11-248330591.70 ppb
2014-11-248330581.70 ppb
2014-11-248330601.80 ppb
2015-03-058467360.980 ppb
2015-03-058467341.50 ppb
2015-03-058467351.40 ppb
2015-03-058467371.30 ppb
2015-05-288621721.10 ppb
2015-05-288621731.10 ppb
2015-05-288621751.20 ppb
2015-05-288621741.000 ppb
2015-08-278795160.820 ppb
2015-08-278795150.850 ppb
2015-08-278795140.880 ppb
2015-08-278795130.900 ppb
2015-11-308957210.560 ppb
2015-11-308957200.680 ppb
2015-11-308957190.720 ppb
2015-11-308957180.950 ppb
2016-03-039080500.760 ppb
2016-03-039080520.920 ppb
2016-03-039080490.850 ppb
2016-03-039080510.650 ppb
2016-06-019239801.10 ppb
2016-06-019239781.30 ppb
2016-06-019239791.50 ppb
2016-06-019239811.50 ppb
2016-08-309425850.670 ppb
2016-08-309425860.650 ppb
2016-08-309425840.620 ppb
2016-08-309425830.580 ppb
2016-11-299614580.400 ppb
2016-11-299614570.920 ppb
2016-11-299614590.950 ppb
2016-11-299614561.000 ppb
2017-03-019755760.640 ppb
2017-03-019755770.740 ppb
2017-03-019755790.750 ppb
2017-03-019755780.970 ppb
2017-05-309941021.20 ppb
2017-05-309941031.40 ppb
2017-05-309941041.30 ppb
2017-05-309941011.10 ppb
2017-09-0510158741.30 ppb
2017-09-0510158761.40 ppb
2017-09-0510158751.50 ppb
2017-09-0510158731.60 ppb
2017-11-2910312880.720 ppb
2017-11-2910312890.850 ppb
2017-11-2910312900.860 ppb
2017-12-0410317380.820 ppb