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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Bellaire Public Water System

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND20ND
2016ND20ND
2017ND20ND
2018ND20ND
20194.03 ppb223.26 ppb - 4.79 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
2014-01-07A140112098ND
2014-01-07A140119499ND
2014-04-07A140176283ND
2014-04-07A140180118ND
2014-07-01A140213879ND
2014-09-15A140217291ND
2015-07-09A150216590ND
2015-07-09A150231582ND
2016-07-05A160374675ND
2016-07-05A160375093ND
2017-07-03A170504707ND
2017-07-03A170504708ND
2018-07-0918070949ND
2018-07-0918070950ND
2019-07-02190714543.26 ppb
2019-07-02190714554.79 ppb