Trichloroacetic acid
El Dorado ID - Main
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 29.7 ppb | 33 | 33 | 15.0 ppb - 59.0 ppb |
2015 | 31.5 ppb | 33 | 33 | 9.10 ppb - 53.0 ppb |
2016 | 37.2 ppb | 34 | 34 | 16.0 ppb - 54.0 ppb |
2017 | 37.4 ppb | 31 | 31 | 20.0 ppb - 62.0 ppb |
2018 | 29.6 ppb | 42 | 42 | 12.0 ppb - 62.0 ppb |
2019 | 23.2 ppb | 71 | 71 | 14.0 ppb - 38.0 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 |
---|---|---|
2014-02-03 | 9590-004-1020 | 16.0 ppb |
2014-02-11 | 9590-901-1039 | 27.0 ppb |
2014-02-11 | 9590-902-1345 | 24.0 ppb |
2014-02-11 | 9590-903-0916 | 27.0 ppb |
2014-02-11 | 9590-905-1215 | 23.0 ppb |
2014-02-11 | 9590-907-0920 | 24.0 ppb |
2014-02-11 | 9590-908-1220 | 26.0 ppb |
2014-02-11 | 9590-909-1050 | 19.0 ppb |
2014-02-11 | 9590-910-1010 | 25.0 ppb |
2014-05-13 | 9590-907-0920 | 42.0 ppb |
2014-05-13 | 9590-908-1330 | 42.0 ppb |
2014-05-13 | 9590-909-1200 | 59.0 ppb |
2014-05-13 | 9590-910-1010 | 44.0 ppb |
2014-05-14 | 9590-901-1116 | 39.0 ppb |
2014-05-14 | 9590-902-1500 | 37.0 ppb |
2014-05-14 | 9590-903-0950 | 37.0 ppb |
2014-05-14 | 9590-905-1310 | 35.0 ppb |
2014-08-13 | 9590-907-0925 | 28.0 ppb |
2014-08-13 | 9590-908-1325 | 30.0 ppb |
2014-08-13 | 9590-909-1225 | 34.0 ppb |
2014-08-13 | 9590-910-1015 | 32.0 ppb |
2014-08-15 | 9590-901-1105 | 21.0 ppb |
2014-08-15 | 9590-902-1420 | 29.0 ppb |
2014-08-15 | 9590-903-0940 | 22.0 ppb |
2014-08-15 | 9590-905-1305 | 15.0 ppb |
2014-11-10 | 9590-901-1025 | 31.0 ppb |
2014-11-10 | 9590-902-1330 | 28.0 ppb |
2014-11-10 | 9590-903-0920 | 30.0 ppb |
2014-11-10 | 9590-905-1205 | 29.0 ppb |
2014-11-14 | 9590-907-1305 | 28.0 ppb |
2014-11-14 | 9590-908-1345 | 25.0 ppb |
2014-11-14 | 9590-909-1150 | 22.0 ppb |
2014-11-14 | 9590-910-0900 | 31.0 ppb |
2015-02-10 | 9590-901-1107 | 29.0 ppb |
2015-02-10 | 9590-902-1417 | 28.0 ppb |
2015-02-10 | 9590-903-0920 | 30.0 ppb |
2015-02-10 | 9590-905-1249 | 29.0 ppb |
2015-02-11 | 9590-907-0910 | 30.0 ppb |
2015-02-11 | 9590-908-1320 | 36.0 ppb |
2015-02-11 | 9590-909-1035 | 39.0 ppb |
2015-02-11 | 9590-910-1000 | 38.0 ppb |
2015-05-07 | 9590-910-0920 | 36.0 ppb |
2015-05-12 | 9590-901-1025 | 37.0 ppb |
2015-05-12 | 9590-902-1420 | 23.0 ppb |
2015-05-12 | 9590-903-0902 | 35.0 ppb |
2015-05-12 | 9590-905-1235 | 33.0 ppb |
2015-05-12 | 9590-907-0920 | 38.0 ppb |
2015-05-12 | 9590-908-1305 | 38.0 ppb |
2015-05-12 | 9590-909-1050 | 53.0 ppb |
2015-05-12 | 9590-910-1005 | 39.0 ppb |
2015-08-10 | 9590-901-0945 | 25.0 ppb |
2015-08-10 | 9590-902-1350 | 33.0 ppb |
2015-08-10 | 9590-903-0815 | 24.0 ppb |
2015-08-10 | 9590-905-1200 | 9.10 ppb |
2015-08-14 | 9590-907-0750 | 31.0 ppb |
2015-08-14 | 9590-908-1340 | 31.0 ppb |
2015-08-14 | 9590-909-1255 | 33.0 ppb |
2015-08-14 | 9590-910-1200 | 26.0 ppb |
2015-11-09 | 9590-901-1020 | 32.0 ppb |
2015-11-09 | 9590-902-1340 | 29.0 ppb |
2015-11-09 | 9590-903-0915 | 33.0 ppb |
2015-11-09 | 9590-905-1210 | 30.0 ppb |
2015-11-09 | 9590-907-0845 | 32.0 ppb |
2015-11-09 | 9590-908-1050 | 28.0 ppb |
2015-11-09 | 9590-909-1010 | 26.0 ppb |
2015-11-09 | 9590-910-0930 | 28.0 ppb |
2016-02-09 | 9590-905-1300 | 50.0 ppb |
2016-02-09 | 9590-907-0930 | 51.0 ppb |
2016-02-09 | 9590-908-1230 | 53.0 ppb |
2016-02-09 | 9590-909-1150 | 54.0 ppb |
2016-02-09 | 9590-910-1015 | 53.0 ppb |
2016-02-10 | 9590-901-1020 | 40.0 ppb |
2016-02-10 | 9590-902-1250 | 38.0 ppb |
2016-02-10 | 9590-903-0910 | 48.0 ppb |
2016-05-12 | 9590-905-1310 | 42.0 ppb |
2016-05-12 | 9590-907-0900 | 35.0 ppb |
2016-05-12 | 9590-908-1105 | 51.0 ppb |
2016-05-12 | 9590-909-1025 | 52.0 ppb |
2016-05-12 | 9590-910-0945 | 33.0 ppb |
2016-05-13 | 9590-901-1048 | 35.0 ppb |
2016-05-13 | 9590-902-1318 | 25.0 ppb |
2016-05-13 | 9590-903-0940 | 31.0 ppb |
2016-08-09 | 9590-907-0945 | 27.0 ppb |
2016-08-09 | 9590-908-1405 | 22.0 ppb |
2016-08-09 | 9590-909-1120 | 36.0 ppb |
2016-08-09 | 9590-910-1045 | 25.0 ppb |
2016-08-11 | 9590-905-1315 | 16.0 ppb |
2016-08-12 | 9590-901-1055 | 22.0 ppb |
2016-08-12 | 9590-902-1255 | 32.0 ppb |
2016-08-12 | 9590-903-0950 | 22.0 ppb |
2016-09-13 | 9590-909-1300 | 29.0 ppb |
2016-09-26 | 9590-909-1335 | 35.0 ppb |
2016-11-08 | 9590-901-1010 | 32.0 ppb |
2016-11-08 | 9590-902-1148 | 32.0 ppb |
2016-11-08 | 9590-903-0900 | 32.0 ppb |
2016-11-08 | 9590-907-0952 | 32.0 ppb |
2016-11-08 | 9590-908-1330 | 45.0 ppb |
2016-11-08 | 9590-909-1120 | 50.0 ppb |
2016-11-08 | 9590-910-1035 | 48.0 ppb |
2016-11-10 | 9590-905-1145 | 36.0 ppb |
2017-02-07 | 9590-901-1045 | 52.0 ppb |
2017-02-07 | 9590-903-0940 | 47.0 ppb |
2017-02-07 | 9590-905-1340 | 47.0 ppb |
2017-02-08 | 9590-902-0945 | 55.0 ppb |
2017-02-08 | 9590-907-1045 | 49.0 ppb |
2017-02-08 | 9590-908-1158 | 54.0 ppb |
2017-02-08 | 9590-909-1135 | 62.0 ppb |
2017-02-08 | 9590-910-1115 | 42.0 ppb |
2017-05-08 | 9590-901-1125 | 34.0 ppb |
2017-05-08 | 9590-903-1420 | 30.0 ppb |
2017-05-08 | 9590-905-1320 | 35.0 ppb |
2017-05-09 | 9590-907-0915 | 33.0 ppb |
2017-05-09 | 9590-908-1150 | 39.0 ppb |
2017-05-09 | 9590-909-1035 | 38.0 ppb |
2017-05-09 | 9590-910-0955 | 27.0 ppb |
2017-08-07 | 9590-901-1030 | 30.0 ppb |
2017-08-07 | 9590-902-1400 | 40.0 ppb |
2017-08-07 | 9590-903-0900 | 25.0 ppb |
2017-08-07 | 9590-905-1240 | 20.0 ppb |
2017-08-08 | 9590-907-0945 | 27.0 ppb |
2017-08-08 | 9590-908-1300 | 35.0 ppb |
2017-08-08 | 9590-909-1150 | 46.0 ppb |
2017-08-08 | 9590-910-1030 | 23.0 ppb |
2017-11-07 | 9590-901-1030 | 35.0 ppb |
2017-11-07 | 9590-903-0915 | 30.0 ppb |
2017-11-07 | 9590-905-1205 | 35.0 ppb |
2017-11-08 | 9590-902-1355 | 34.0 ppb |
2017-11-08 | 9590-907-0945 | 29.0 ppb |
2017-11-08 | 9590-908-1445 | 37.0 ppb |
2017-11-08 | 9590-909-1410 | 34.0 ppb |
2017-11-08 | 9590-910-1330 | 35.0 ppb |
2018-02-12 | 9590-901-1045 | 36.0 ppb |
2018-02-12 | 9590-902-1335 | 33.0 ppb |
2018-02-12 | 9590-903-0925 | 30.0 ppb |
2018-02-12 | 9590-905-1235 | 31.0 ppb |
2018-02-13 | 9590-907-0920 | 33.0 ppb |
2018-02-13 | 9590-908-1225 | 40.0 ppb |
2018-02-13 | 9590-909-1050 | 42.0 ppb |
2018-02-13 | 9590-910-1002 | 33.0 ppb |
2018-05-07 | 9590-901-1250 | 37.0 ppb |
2018-05-07 | 9590-903-1415 | 32.0 ppb |
2018-05-07 | 9590-905-1043 | 28.0 ppb |
2018-05-07 | 9590-907-1515 | 39.0 ppb |
2018-05-08 | 9590-909-1250 | 62.0 ppb |
2018-05-08 | 9590-910-1330 | 40.0 ppb |
2018-05-09 | 9590-902-1320 | 38.0 ppb |
2018-05-09 | 9590-908-0925 | 36.0 ppb |
2018-08-13 | 9590-901-1135 | 25.0 ppb |
2018-08-13 | 9590-902-1435 | 31.0 ppb |
2018-08-13 | 9590-903-1010 | 22.0 ppb |
2018-08-13 | 9590-905-1315 | 12.0 ppb |
2018-08-14 | 9590-907-0910 | 29.0 ppb |
2018-08-14 | 9590-908-1220 | 30.0 ppb |
2018-08-14 | 9590-909-1030 | 34.0 ppb |
2018-08-14 | 9590-910-0950 | 27.0 ppb |
2018-10-30 | 9590-901-1010 | 22.0 ppb |
2018-10-30 | 9590-902-1325 | 26.0 ppb |
2018-10-30 | 9590-903-0855 | 22.0 ppb |
2018-10-30 | 9590-905-1135 | 24.0 ppb |
2018-10-30 | 9590-907-1430 | 25.0 ppb |
2018-11-13 | 9590-907-0915 | 24.0 ppb |
2018-11-13 | 9590-908-1227 | 22.0 ppb |
2018-11-13 | 9590-909-1010 | 22.0 ppb |
2018-11-13 | 9590-910-1150 | 20.0 ppb |
2018-11-14 | 9590-901-1035 | 25.0 ppb |
2018-11-14 | 9590-902-1418 | 28.0 ppb |
2018-11-14 | 9590-903-0920 | 24.0 ppb |
2018-11-14 | 9590-905-1205 | 26.0 ppb |
2018-12-11 | 9590-901-1000 | 28.0 ppb |
2018-12-11 | 9590-902-1450 | 28.0 ppb |
2018-12-11 | 9590-903-0840 | 25.0 ppb |
2018-12-11 | 9590-905-1335 | 25.0 ppb |
2018-12-12 | 9590-907-0912 | 26.0 ppb |
2019-01-08 | 9590-901-1050 | 31.0 ppb |
2019-01-08 | 9590-902-1415 | 29.0 ppb |
2019-01-08 | 9590-903-0930 | 25.0 ppb |
2019-01-08 | 9590-905-1210 | 27.0 ppb |
2019-01-08 | 9590-907-1510 | 23.0 ppb |
2019-02-15 | 9590-901-1100 | 25.0 ppb |
2019-02-15 | 9590-902-1315 | 27.0 ppb |
2019-02-15 | 9590-903-0930 | 24.0 ppb |
2019-02-15 | 9590-907-0920 | 24.0 ppb |
2019-02-15 | 9590-908-1220 | 37.0 ppb |
2019-02-15 | 9590-909-1012 | 38.0 ppb |
2019-02-15 | 9590-910-1138 | 38.0 ppb |
2019-03-13 | 9590-901-1020 | 26.0 ppb |
2019-03-13 | 9590-902-1350 | 27.0 ppb |
2019-03-13 | 9590-903-0900 | 24.0 ppb |
2019-03-13 | 9590-905-1150 | 23.0 ppb |
2019-03-13 | 9590-907-1445 | 24.0 ppb |
2019-04-09 | 9590-901-1020 | 26.0 ppb |
2019-04-09 | 9590-902-1315 | 30.0 ppb |
2019-04-09 | 9590-903-0905 | 24.0 ppb |
2019-04-09 | 9590-905-1125 | 29.0 ppb |
2019-04-09 | 9590-907-1420 | 24.0 ppb |
2019-05-14 | 9590-901-1050 | 27.0 ppb |
2019-05-14 | 9590-902-1355 | 24.0 ppb |
2019-05-14 | 9590-903-0910 | 25.0 ppb |
2019-05-14 | 9590-905-1200 | 30.0 ppb |
2019-05-14 | 9590-907-0912 | 23.0 ppb |
2019-05-14 | 9590-908-1300 | 32.0 ppb |
2019-05-14 | 9590-909-1035 | 35.0 ppb |
2019-05-14 | 9590-910-1210 | 29.0 ppb |
2019-06-11 | 9590-901-1010 | 21.0 ppb |
2019-06-11 | 9590-902-1252 | 22.0 ppb |
2019-06-11 | 9590-903-0850 | 19.0 ppb |
2019-06-11 | 9590-905-1115 | 28.0 ppb |
2019-06-11 | 9590-907-1347 | 19.0 ppb |
2019-07-09 | 9590-901-1035 | 20.0 ppb |
2019-07-09 | 9590-902-1410 | 20.0 ppb |
2019-07-09 | 9590-903-0905 | 19.0 ppb |
2019-07-09 | 9590-905-1205 | 21.0 ppb |
2019-07-09 | 9590-907-1512 | 20.0 ppb |
2019-08-13 | 9590-901-1035 | 20.0 ppb |
2019-08-13 | 9590-902-1350 | 24.0 ppb |
2019-08-13 | 9590-903-0915 | 18.0 ppb |
2019-08-13 | 9590-905-1150 | 15.0 ppb |
2019-08-13 | 9590-907-0940 | 22.0 ppb |
2019-08-13 | 9590-908-1245 | 25.0 ppb |
2019-08-13 | 9590-909-1030 | 22.0 ppb |
2019-08-13 | 9590-910-1215 | 18.0 ppb |
2019-09-10 | 9590-901-1105 | 20.0 ppb |
2019-09-10 | 9590-902-1355 | 24.0 ppb |
2019-09-10 | 9590-903-0930 | 18.0 ppb |
2019-09-10 | 9590-905-1220 | 15.0 ppb |
2019-09-10 | 9590-907-1500 | 22.0 ppb |
2019-10-08 | 9590-901-1045 | 19.0 ppb |
2019-10-08 | 9590-902-1345 | 20.0 ppb |
2019-10-08 | 9590-903-0920 | 14.0 ppb |
2019-10-08 | 9590-905-1200 | 17.0 ppb |
2019-10-08 | 9590-907-1450 | 18.0 ppb |
2019-11-12 | 9590-901-1040 | 16.0 ppb |
2019-11-12 | 9590-902-1355 | 23.0 ppb |
2019-11-12 | 9590-903-0915 | 16.0 ppb |
2019-11-12 | 9590-905-1205 | 18.0 ppb |
2019-11-12 | 9590-907-1505 | 18.0 ppb |
2019-11-12 | 9590-908-1200 | 24.0 ppb |
2019-11-12 | 9590-909-1015 | 22.0 ppb |
2019-11-12 | 9590-910-1130 | 24.0 ppb |
2019-12-10 | 9590-901-1015 | 20.0 ppb |
2019-12-10 | 9590-902-1350 | 22.0 ppb |
2019-12-10 | 9590-903-0845 | 19.0 ppb |
2019-12-10 | 9590-905-1135 | 20.0 ppb |
2019-12-10 | 9590-907-1455 | 18.0 ppb |