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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Warren Water District

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.

MORE ABOUT THIS CONTAMINANT

 

96

Samples

0

Samples exceeding legal limit (MCL)

37

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.31 ppb1612ND - 3.00 ppb
20150.0625 ppb161ND - 1.000 ppb
20160.0625 ppb161ND - 1.000 ppb
20171.06 ppb1610ND - 3.00 ppb
20181.31 ppb1612ND - 2.00 ppb
20190.0625 ppb161ND - 1.000 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
2014-02-1220344761.000 ppb
2014-02-122034477ND
2014-02-1220344741.000 ppb
2014-02-1220344751.000 ppb
2014-05-2020521362.00 ppb
2014-05-2020521372.00 ppb
2014-05-2020521382.00 ppb
2014-05-2020521352.00 ppb
2014-08-1120714873.00 ppb
2014-08-1120714882.00 ppb
2014-08-1120714892.00 ppb
2014-08-1120714902.00 ppb
2014-11-042090647ND
2014-11-0420906491.000 ppb
2014-11-042090648ND
2014-11-042090646ND
2015-02-10OE213857ND
2015-02-10OE213860ND
2015-02-11OE213859ND
2015-02-11OE213858ND
2015-05-04OE239324ND
2015-05-04OE239325ND
2015-05-04OE239327ND
2015-05-04OE239326ND
2015-08-03OE276438ND
2015-08-03OE276439ND
2015-08-03OE276441ND
2015-08-03OE276440ND
2015-11-03OE314442ND
2015-11-03OE314443ND
2015-11-03OE314444ND
2015-11-03OE3144411.000 ppb
2016-02-17OE346334ND
2016-02-17OE346333ND
2016-02-17OE346335ND
2016-02-17OE346336ND
2016-05-18OE379604ND
2016-05-18OE379605ND
2016-05-18OE379603ND
2016-05-18OE379602ND
2016-08-16OE416380ND
2016-08-16OE416379ND
2016-08-16OE4163811.000 ppb
2016-08-16OE416378ND
2016-11-15OE452728ND
2016-11-15OE452725ND
2016-11-15OE452726ND
2016-11-15OE452727ND
2017-02-13OE4805703.00 ppb
2017-02-13OE4805673.00 ppb
2017-02-13OE4805692.00 ppb
2017-02-13OE4805683.00 ppb
2017-05-09OE511361ND
2017-05-09OE511362ND
2017-05-09OE511364ND
2017-05-09OE511363ND
2017-08-08OE548619ND
2017-08-08OE548616ND
2017-08-08OE5486181.000 ppb
2017-08-08OE5486171.000 ppb
2017-11-08OE5883191.000 ppb
2017-11-08OE5883181.000 ppb
2017-11-08OE5883171.000 ppb
2017-11-08OE5883161.000 ppb
2018-02-15OE6237272.00 ppb
2018-02-15OE6237232.00 ppb
2018-02-15OE6237222.00 ppb
2018-02-15OE6237212.00 ppb
2018-05-03OE6534831.000 ppb
2018-05-03OE6534821.000 ppb
2018-05-03OE6534812.00 ppb
2018-05-03OE6534801.000 ppb
2018-08-06OE6946052.00 ppb
2018-08-06OE6946022.00 ppb
2018-08-06OE6946032.00 ppb
2018-08-06OE6946042.00 ppb
2018-11-14OE740242ND
2018-11-14OE740243ND
2018-11-14OE740244ND
2018-11-14OE740245ND
2019-02-12OE771339ND
2019-02-12OE7713401.000 ppb
2019-02-14OE771337ND
2019-02-14OE771338ND
2019-05-15OE809334ND
2019-05-15OE809335ND
2019-05-16OE809337ND
2019-05-16OE809336ND
2019-08-06OE847449ND
2019-08-06OE847448ND
2019-08-08OE847450ND
2019-08-08OE847447ND
2019-11-12OE893514ND
2019-11-12OE893512ND
2019-11-13OE893513ND
2019-11-13OE893511ND