Trichloroacetic acid
Fond Du Lac 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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 14 | 0 | ND |
| 2015 | ND | 16 | 0 | ND |
| 2016 | 0.0133 ppb | 12 | 1 | ND - 0.160 ppb |
| 2017 | 0.143 ppb | 16 | 11 | ND - 0.300 ppb |
| 2018 | 0.125 ppb | 16 | 13 | ND - 0.280 ppb |
| 2019 | 0.0238 ppb | 16 | 1 | ND - 0.380 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 |
|---|---|---|
| 2014-02-17 | 770783 | ND |
| 2014-02-17 | 770785 | ND |
| 2014-05-14 | 785685 | ND |
| 2014-05-14 | 785687 | ND |
| 2014-05-14 | 785686 | ND |
| 2014-05-14 | 785684 | ND |
| 2014-08-12 | 809929 | ND |
| 2014-08-12 | 809928 | ND |
| 2014-08-12 | 809931 | ND |
| 2014-08-12 | 809930 | ND |
| 2014-11-11 | 830915 | ND |
| 2014-11-11 | 830914 | ND |
| 2014-11-11 | 830916 | ND |
| 2014-11-11 | 830917 | ND |
| 2015-02-16 | 843829 | ND |
| 2015-02-16 | 843830 | ND |
| 2015-02-16 | 843832 | ND |
| 2015-02-16 | 843831 | ND |
| 2015-05-18 | 860210 | ND |
| 2015-05-18 | 860208 | ND |
| 2015-05-18 | 860211 | ND |
| 2015-05-18 | 860209 | ND |
| 2015-08-17 | 877447 | ND |
| 2015-08-17 | 877446 | ND |
| 2015-08-17 | 877448 | ND |
| 2015-08-17 | 877445 | ND |
| 2015-11-11 | 893801 | ND |
| 2015-11-11 | 893800 | ND |
| 2015-11-11 | 893799 | ND |
| 2015-11-11 | 893798 | ND |
| 2016-02-15 | 905419 | ND |
| 2016-02-15 | 905421 | ND |
| 2016-02-15 | 905420 | ND |
| 2016-02-15 | 905422 | ND |
| 2016-08-15 | 939249 | ND |
| 2016-08-15 | 939247 | ND |
| 2016-08-15 | 939248 | ND |
| 2016-08-15 | 939250 | ND |
| 2016-11-14 | 958942 | ND |
| 2016-11-14 | 958939 | 0.160 ppb |
| 2016-11-14 | 958941 | ND |
| 2016-11-14 | 958940 | ND |
| 2017-02-13 | 973443 | 0.160 ppb |
| 2017-02-13 | 973444 | 0.150 ppb |
| 2017-02-13 | 973446 | ND |
| 2017-02-13 | 973445 | 0.130 ppb |
| 2017-05-15 | 990472 | 0.200 ppb |
| 2017-05-15 | 990469 | 0.280 ppb |
| 2017-05-15 | 990470 | 0.290 ppb |
| 2017-05-15 | 990471 | 0.300 ppb |
| 2017-08-16 | 1011999 | 0.200 ppb |
| 2017-08-16 | 1012000 | 0.230 ppb |
| 2017-08-16 | 1011998 | 0.180 ppb |
| 2017-08-16 | 1011997 | 0.170 ppb |
| 2017-11-13 | 1029590 | ND |
| 2017-11-13 | 1029592 | ND |
| 2017-11-13 | 1029593 | ND |
| 2017-11-13 | 1029591 | ND |
| 2018-02-13 | 1040802 | ND |
| 2018-02-13 | 1040803 | ND |
| 2018-02-13 | 1040801 | ND |
| 2018-02-13 | 1040800 | 0.280 ppb |
| 2018-05-14 | 1055389 | 0.0890 ppb |
| 2018-05-14 | 1055387 | 0.150 ppb |
| 2018-05-14 | 1055388 | 0.160 ppb |
| 2018-05-14 | 1055386 | 0.210 ppb |
| 2018-08-13 | 1073425 | 0.1000 ppb |
| 2018-08-13 | 1073422 | 0.140 ppb |
| 2018-08-13 | 1073423 | 0.140 ppb |
| 2018-08-13 | 1073424 | 0.140 ppb |
| 2018-11-12 | 1092410 | 0.120 ppb |
| 2018-11-12 | 1092413 | 0.0950 ppb |
| 2018-11-12 | 1092411 | 0.150 ppb |
| 2018-11-12 | 1092412 | 0.230 ppb |
| 2019-02-18 | 1105567 | ND |
| 2019-02-18 | 1105568 | ND |
| 2019-02-18 | 1105566 | ND |
| 2019-02-18 | 1105569 | ND |
| 2019-05-14 | 1121046 | ND |
| 2019-05-14 | 1121048 | 0.380 ppb |
| 2019-05-14 | 1121047 | ND |
| 2019-05-14 | 1121045 | ND |
| 2019-08-12 | 1140153 | ND |
| 2019-08-12 | 1140151 | ND |
| 2019-08-12 | 1140150 | ND |
| 2019-08-12 | 1140152 | ND |
| 2019-11-11 | 1160250 | ND |
| 2019-11-11 | 1160249 | ND |
| 2019-11-11 | 1160248 | ND |
| 2019-11-11 | 1160247 | ND |