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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Schofield 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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.140 ppb21ND - 0.280 ppb
20150.135 ppb21ND - 0.270 ppb
2016ND20ND
20170.0900 ppb21ND - 0.180 ppb
20180.175 ppb220.130 ppb - 0.220 ppb
2019ND20ND

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
2014-08-13810510ND
2014-08-138105090.280 ppb
2015-08-10875980ND
2015-08-108759810.270 ppb
2016-08-10938489ND
2016-08-10938488ND
2017-09-061016215ND
2017-09-0610162140.180 ppb
2018-08-1510742120.130 ppb
2018-08-2010748970.220 ppb
2019-08-191141985ND
2019-08-221143043ND