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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

Shawnee County RWD 4C

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.

 

68

Samples

0

Samples exceeding legal limit (MCL)

55

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20132.95 ppb441.000 ppb - 8.30 ppb
20145.14 ppb1614ND - 34.0 ppb
20150.771 ppb1613ND - 1.40 ppb
20162.20 ppb1615ND - 17.0 ppb
20170.657 ppb169ND - 3.30 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
2013-11-11605417DF1.40 ppb
2013-11-11605418DF1.000 ppb
2013-11-11605419DF8.30 ppb
2013-11-11605420DF1.10 ppb
2014-03-09748230.940 ppb
2014-03-10748290.790 ppb
2014-03-10748270.760 ppb
2014-03-10748250.730 ppb
2014-06-0912505212.0 ppb
2014-06-0912505034.0 ppb
2014-06-0912505121.0 ppb
2014-06-091250493.70 ppb
2014-09-081897801.40 ppb
2014-09-081897781.20 ppb
2014-09-08189777ND
2014-09-081897791.000 ppb
2014-12-15246724ND
2014-12-152467231.10 ppb
2014-12-152467220.980 ppb
2014-12-152467212.60 ppb
2015-03-022860310.900 ppb
2015-03-02286032ND
2015-03-022860300.900 ppb
2015-03-022860290.790 ppb
2015-06-223516560.960 ppb
2015-06-223516551.10 ppb
2015-06-223516541.10 ppb
2015-06-223516531.10 ppb
2015-09-214089511.10 ppb
2015-09-214089501.40 ppb
2015-09-214089481.10 ppb
2015-09-21408949ND
2015-12-074543710.660 ppb
2015-12-07454372ND
2015-12-074543730.610 ppb
2015-12-074543740.610 ppb
2016-03-145085411.60 ppb
2016-03-145085405.20 ppb
2016-03-145085380.520 ppb
2016-03-145085390.970 ppb
2016-06-135623281.10 ppb
2016-06-13562327ND
2016-06-135623260.580 ppb
2016-06-135623250.510 ppb
2016-09-126209561.20 ppb
2016-09-1262095717.0 ppb
2016-09-126209591.000 ppb
2016-09-126209581.000 ppb
2016-12-126704661.50 ppb
2016-12-126704650.810 ppb
2016-12-126704671.20 ppb
2016-12-126704640.970 ppb
2017-03-207262093.30 ppb
2017-03-207262080.990 ppb
2017-03-207262071.000 ppb
2017-03-207262060.860 ppb
2017-06-197804930.600 ppb
2017-06-19780490ND
2017-06-197804910.560 ppb
2017-06-197804922.00 ppb
2017-09-25845708ND
2017-09-25845709ND
2017-09-25845707ND
2017-09-25845710ND
2017-12-18893973ND
2017-12-18893974ND
2017-12-188939750.570 ppb
2017-12-188939760.630 ppb