EWG's Tap Water Database — 2021 UPDATE


Trichloroacetic acid

Dewitt WDS - North

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.





Samples exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
20146.88 ppb16164.10 ppb - 14.0 ppb
20156.06 ppb16162.70 ppb - 14.0 ppb
20165.14 ppb16163.00 ppb - 13.0 ppb
20175.44 ppb12123.10 ppb - 8.00 ppb
20186.13 ppb16164.20 ppb - 8.30 ppb
20196.29 ppb16164.20 ppb - 8.40 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
2014-02-131Q2014 RUSSELL L4.60 ppb
2014-02-131Q2014 FLY RD6.30 ppb
2014-02-131Q2014 ALMONT DR9.10 ppb
2014-02-131Q2014 BADGELY R4.40 ppb
2014-05-132Q2014 FLY RD6.80 ppb
2014-05-132Q2014 RUSSELL L6.10 ppb
2014-05-132Q2014 ALMONT DR14.0 ppb
2014-05-132Q2014 BADGELY R8.10 ppb
2014-08-133Q2014 ALMONT DR9.10 ppb
2014-08-133Q2014 BADGELY R7.20 ppb
2014-08-133Q2014 FLY RD4.10 ppb
2014-08-133Q2014 RUSSELL L5.80 ppb
2014-11-134Q2014 RUSSELL L4.90 ppb
2014-11-134Q2014 FLY RD5.10 ppb
2014-11-134Q2014 BADGELY R5.60 ppb
2014-11-134Q2014 ALMONT DR8.90 ppb
2015-02-111Q2015 FLY RD6.00 ppb
2015-02-111Q2015 ALMONT DR5.60 ppb
2015-02-111Q2015 RUSSELL L4.60 ppb
2015-02-111Q2015 BADGELY R7.40 ppb
2015-05-142Q2015 RUSSELL L5.80 ppb
2015-05-142Q2015 FLY RD5.10 ppb
2015-05-142Q2015 ALMONT DR5.80 ppb
2015-05-142Q2015 BADGELY R6.70 ppb
2015-08-133Q2015 BADGELY R5.10 ppb
2015-08-133Q2015 ALMONT DR4.10 ppb
2015-08-133Q2015 RUSSELL L3.80 ppb
2015-08-133Q2015 FLY RD2.70 ppb
2015-11-094Q2015 RUSSELL L6.40 ppb
2015-11-094Q2015 BADGELY R14.0 ppb
2015-11-094Q2015 FLY RD6.10 ppb
2015-11-094Q2015 ALMONT DR7.80 ppb
2016-02-121Q2016 FLY RD5.10 ppb
2016-02-121Q2016 RUSSELL L5.00 ppb
2016-02-121Q2016 ALMONT DR4.80 ppb
2016-02-121Q2016 BADGELY R6.10 ppb
2016-05-172Q2016 RUSSELL L3.70 ppb
2016-05-172Q2016 ALMONT DR3.20 ppb
2016-05-172Q2016 FLY RD3.30 ppb
2016-05-172Q2016 BADGELY R5.00 ppb
2016-08-103Q2016 FLY RD3.80 ppb
2016-08-103Q2016 BADGELY R4.70 ppb
2016-08-103Q2016 ALMONT DR3.70 ppb
2016-08-103Q2016 RUSSELL L3.00 ppb
2016-11-084Q2016 BADGELY R13.0 ppb
2016-11-084Q2016 RUSSELL L6.30 ppb
2016-11-084Q2016 FLY RD5.80 ppb
2016-11-084Q2016 ALMONT DR5.70 ppb
2017-05-102Q2017 FLY RD7.40 ppb
2017-05-102Q2017 ALMONT DR8.00 ppb
2017-05-102Q2017 RUSSELL L7.10 ppb
2017-05-102Q2017 BADGELY R6.90 ppb
2017-08-093Q2017 ALMONT DR4.90 ppb
2017-08-093Q2017 RUSSELL L4.90 ppb
2017-08-093Q2017 BADGELY R6.80 ppb
2017-08-093Q2017 FLY RD4.40 ppb
2017-11-074Q2017 RUSSELL L3.40 ppb
2017-11-074Q2017 BADGELY R4.50 ppb
2017-11-074Q2017 FLY RD3.10 ppb
2017-11-074Q2017 ALMONT DR3.90 ppb
2018-02-151Q2018 RUSSELL L7.30 ppb
2018-02-151Q2018 FLY RD5.90 ppb
2018-02-151Q2018 BADGLEY R6.70 ppb
2018-02-151Q2018 ALMONT DR5.70 ppb
2018-05-102Q2018 RUSSELL L6.90 ppb
2018-05-102Q2018 BADGLEY R8.30 ppb
2018-05-102Q2018 ALMONT DR8.20 ppb
2018-05-102Q2018 FLY RD7.50 ppb
2018-08-143Q2018 ALMONT DR4.90 ppb
2018-08-143Q2018 FLY RD4.20 ppb
2018-08-143Q2018 BADGLEY R5.50 ppb
2018-08-143Q2018 RUSSELL L4.20 ppb
2018-11-074Q2018 BADGLEY R5.20 ppb
2018-11-074Q2018 ALMONT DR5.90 ppb
2018-11-074Q2018 FLY RD7.00 ppb
2018-11-074Q2018 RUSSELL L4.60 ppb
2019-02-141Q2019 BADGLEY R6.40 ppb
2019-02-141Q2019 RUSSELL L7.00 ppb
2019-02-141Q2019 FLY RD8.40 ppb
2019-02-141Q2019 ALMONT DR7.00 ppb
2019-05-102Q2019 FLY RD6.60 ppb
2019-05-102Q2019 RUSSELL L6.60 ppb
2019-05-102Q2019 BADGLEY R8.20 ppb
2019-05-102Q2019 ALMONT DR7.60 ppb
2019-08-133Q2019 BADGLEY R6.70 ppb
2019-08-133Q2019 ALMONT DR4.70 ppb
2019-08-133Q2019 FLY RD4.70 ppb
2019-08-133Q2019 RUSSELL L4.70 ppb
2019-11-064Q2019 BADGLEY R8.30 ppb
2019-11-064Q2019 FLY RD5.10 ppb
2019-11-064Q2019 RUSSELL L4.20 ppb
2019-11-064Q2019 ALMONT DR4.40 ppb