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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Salem 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.

MORE ABOUT THIS CONTAMINANT

 

86

Samples

0

Samples exceeding legal limit (MCL)

40

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND160ND
2016ND160ND
20172.41 ppb1812ND - 6.00 ppb
20181.60 ppb16160.600 ppb - 2.20 ppb
20191.12 ppb1612ND - 2.20 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
2014-11-181351147ND
2014-11-181351146ND
2014-11-181351147ND
2014-11-181351146ND
2015-02-171374553ND
2015-02-171374554ND
2015-02-171374554ND
2015-02-171374553ND
2015-05-151396225ND
2015-05-151396226ND
2015-05-151396226ND
2015-05-151396225ND
2015-08-171421801ND
2015-08-171421802ND
2015-08-171421802ND
2015-08-171421801ND
2015-11-191446028ND
2015-11-191446029ND
2015-11-191446029ND
2015-11-191446028ND
2016-02-161468279ND
2016-02-161468280ND
2016-02-161468280ND
2016-02-161468279ND
2016-05-111491040ND
2016-05-111491041ND
2016-05-111491040ND
2016-05-111491041ND
2016-08-151516438ND
2016-08-151516439ND
2016-08-151516438ND
2016-08-151516439ND
2016-11-081539771ND
2016-11-081539772ND
2016-11-081539771ND
2016-11-081539772ND
2017-02-0235292874009ND
2017-02-0235292874010ND
2017-02-0235292874010ND
2017-02-0235292874009ND
2017-05-16353126260032.70 ppb
2017-05-16353126260042.80 ppb
2017-05-16353126260032.70 ppb
2017-05-16353126260042.80 ppb
2017-08-09353298050156.00 ppb
2017-08-09353298050165.10 ppb
2017-08-09353298050156.00 ppb
2017-08-09353298050165.10 ppb
2017-11-1535349185001ND
2017-11-1535349185001ND
2017-12-21353650180012.50 ppb
2017-12-21353650180022.60 ppb
2017-12-21353650180012.50 ppb
2017-12-21353650180022.60 ppb
2018-02-20353757850011.90 ppb
2018-02-20353757850021.80 ppb
2018-02-20353757850021.80 ppb
2018-02-20353757850011.90 ppb
2018-05-23353945820011.70 ppb
2018-05-23353945820020.600 ppb
2018-05-23353945820020.600 ppb
2018-05-23353945820011.70 ppb
2018-08-20354127730011.20 ppb
2018-08-20354127730011.20 ppb
2018-09-13354179260011.20 ppb
2018-09-13354179260011.20 ppb
2018-11-19354323930012.20 ppb
2018-11-19354323930022.20 ppb
2018-11-19354323930012.20 ppb
2018-11-19354323930022.20 ppb
2019-02-18354493640020.900 ppb
2019-02-18354493640010.680 ppb
2019-02-18354493640010.680 ppb
2019-02-18354493640020.900 ppb
2019-05-16354693750021.80 ppb
2019-05-16354693750021.80 ppb
2019-05-16354693750011.30 ppb
2019-05-16354693750011.30 ppb
2019-08-14354912210022.10 ppb
2019-08-14354912210012.20 ppb
2019-08-14354912210012.20 ppb
2019-08-14354912210022.10 ppb
2019-11-1835514067001ND
2019-11-1835514067002ND
2019-11-1835514067001ND
2019-11-1835514067002ND