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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

Klondike Independent School 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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND20ND
20140.633 ppb31ND - 1.90 ppb
2015ND40ND
20161.50 ppb42ND - 3.80 ppb
20171.80 ppb32ND - 2.90 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
2013-01-231301678011ND
2013-06-20Q1302604004ND
2014-06-05Q14195280041.90 ppb
2014-09-03Q1440864004ND
2014-10-23Q1453729004ND
2015-01-21Q1502000003ND
2015-04-15Q1514210003ND
2015-07-13Q1526518003ND
2015-10-14Q1540708003ND
2016-01-26Q1603482009ND
2016-04-12Q1614437004ND
2016-07-07Q16273920033.80 ppb
2016-10-12Q16435840032.20 ppb
2017-02-01Q17044120052.50 ppb
2017-04-11Q17146300042.90 ppb
2017-07-11Q1728125004ND