Trichloroacetic acid
Saint Paul Regional Water Services
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 | 6.62 ppb | 48 | 48 | 5.60 ppb - 8.10 ppb |
2015 | 8.81 ppb | 48 | 48 | 7.10 ppb - 12.0 ppb |
2016 | 10.4 ppb | 48 | 48 | 7.00 ppb - 14.0 ppb |
2017 | 9.17 ppb | 48 | 48 | 8.10 ppb - 11.0 ppb |
2018 | 11.6 ppb | 48 | 48 | 7.10 ppb - 16.0 ppb |
2019 | 10.4 ppb | 48 | 48 | 7.90 ppb - 12.0 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 |
---|---|---|
2014-03-04 | 14C0117-01 | 5.60 ppb |
2014-03-04 | 14C0117-02 | 5.80 ppb |
2014-03-04 | 14C0117-03 | 6.30 ppb |
2014-03-04 | 14C0117-04 | 6.00 ppb |
2014-03-04 | 14C0118-01 | 6.00 ppb |
2014-03-04 | 14C0118-02 | 6.00 ppb |
2014-03-04 | 14C0118-03 | 6.10 ppb |
2014-03-04 | 14C0118-04 | 5.90 ppb |
2014-03-04 | 14C0119-01 | 7.00 ppb |
2014-03-04 | 14C0119-02 | 7.00 ppb |
2014-03-04 | 14C0119-03 | 6.20 ppb |
2014-03-04 | 14C0119-04 | 6.60 ppb |
2014-06-03 | 14F0202-01 | 7.20 ppb |
2014-06-03 | 14F0202-02 | 7.30 ppb |
2014-06-03 | 14F0202-03 | 7.40 ppb |
2014-06-03 | 14F0202-04 | 7.70 ppb |
2014-06-03 | 14F0203-01 | 7.70 ppb |
2014-06-03 | 14F0203-02 | 7.20 ppb |
2014-06-03 | 14F0203-03 | 7.00 ppb |
2014-06-03 | 14F0203-04 | 7.40 ppb |
2014-06-03 | 14F0205-01 | 7.00 ppb |
2014-06-03 | 14F0205-02 | 7.50 ppb |
2014-06-03 | 14F0205-03 | 8.10 ppb |
2014-06-03 | 14F0205-04 | 7.20 ppb |
2014-09-09 | 14I0400-01 | 6.90 ppb |
2014-09-09 | 14I0400-02 | 7.10 ppb |
2014-09-09 | 14I0400-03 | 6.70 ppb |
2014-09-09 | 14I0400-04 | 6.60 ppb |
2014-09-09 | 14I0401-01 | 7.10 ppb |
2014-09-09 | 14I0401-02 | 6.60 ppb |
2014-09-09 | 14I0401-03 | 6.70 ppb |
2014-09-09 | 14I0401-04 | 6.70 ppb |
2014-09-09 | 14I0405-01 | 7.00 ppb |
2014-09-09 | 14I0405-02 | 6.80 ppb |
2014-09-09 | 14I0405-03 | 6.80 ppb |
2014-09-09 | 14I0405-04 | 6.60 ppb |
2014-12-08 | 14L0361-01 | 6.20 ppb |
2014-12-08 | 14L0361-02 | 6.20 ppb |
2014-12-08 | 14L0361-03 | 6.00 ppb |
2014-12-08 | 14L0361-04 | 5.80 ppb |
2014-12-08 | 14L0362-01 | 5.90 ppb |
2014-12-08 | 14L0362-02 | 6.60 ppb |
2014-12-08 | 14L0362-03 | 5.80 ppb |
2014-12-08 | 14L0362-04 | 5.80 ppb |
2014-12-08 | 14L0363-01 | 6.10 ppb |
2014-12-08 | 14L0363-02 | 6.40 ppb |
2014-12-08 | 14L0363-03 | 6.40 ppb |
2014-12-08 | 14L0363-04 | 5.80 ppb |
2015-03-02 | 15C0028-01 | 8.00 ppb |
2015-03-02 | 15C0028-02 | 7.80 ppb |
2015-03-02 | 15C0028-03 | 7.40 ppb |
2015-03-02 | 15C0028-04 | 8.30 ppb |
2015-03-02 | 15C0029-01 | 7.90 ppb |
2015-03-02 | 15C0029-02 | 7.50 ppb |
2015-03-02 | 15C0029-03 | 7.80 ppb |
2015-03-02 | 15C0029-04 | 8.20 ppb |
2015-03-02 | 15C0030-01 | 7.90 ppb |
2015-03-02 | 15C0030-02 | 8.20 ppb |
2015-03-02 | 15C0030-03 | 8.20 ppb |
2015-03-02 | 15C0030-04 | 7.60 ppb |
2015-06-03 | 15F0332-01 | 7.30 ppb |
2015-06-03 | 15F0332-02 | 7.30 ppb |
2015-06-03 | 15F0332-03 | 7.10 ppb |
2015-06-03 | 15F0332-04 | 7.40 ppb |
2015-06-03 | 15F0334-01 | 7.30 ppb |
2015-06-03 | 15F0334-02 | 7.30 ppb |
2015-06-03 | 15F0334-03 | 7.20 ppb |
2015-06-03 | 15F0334-04 | 7.20 ppb |
2015-06-03 | 15F0335-01 | 7.20 ppb |
2015-06-03 | 15F0335-02 | 7.10 ppb |
2015-06-03 | 15F0335-03 | 7.60 ppb |
2015-06-03 | 15F0335-04 | 7.10 ppb |
2015-09-02 | 15I0188-01 | 9.20 ppb |
2015-09-02 | 15I0188-02 | 9.60 ppb |
2015-09-02 | 15I0188-03 | 9.40 ppb |
2015-09-02 | 15I0188-04 | 9.50 ppb |
2015-09-02 | 15I0189-01 | 9.30 ppb |
2015-09-02 | 15I0189-02 | 9.40 ppb |
2015-09-02 | 15I0189-03 | 9.10 ppb |
2015-09-02 | 15I0189-04 | 9.00 ppb |
2015-09-02 | 15I0191-01 | 9.00 ppb |
2015-09-02 | 15I0191-02 | 9.10 ppb |
2015-09-02 | 15I0191-03 | 8.80 ppb |
2015-09-02 | 15I0191-04 | 8.80 ppb |
2015-12-08 | 15L0459-01 | 11.0 ppb |
2015-12-08 | 15L0459-02 | 11.0 ppb |
2015-12-08 | 15L0459-03 | 12.0 ppb |
2015-12-08 | 15L0459-04 | 11.0 ppb |
2015-12-08 | 15L0460-01 | 12.0 ppb |
2015-12-08 | 15L0460-02 | 11.0 ppb |
2015-12-08 | 15L0460-03 | 11.0 ppb |
2015-12-08 | 15L0460-04 | 10.00 ppb |
2015-12-08 | 15L0461-01 | 10.00 ppb |
2015-12-08 | 15L0461-02 | 11.0 ppb |
2015-12-08 | 15L0461-03 | 9.90 ppb |
2015-12-08 | 15L0461-04 | 11.0 ppb |
2016-03-15 | 16C0767-01 | 9.90 ppb |
2016-03-15 | 16C0767-02 | 11.0 ppb |
2016-03-15 | 16C0767-03 | 9.60 ppb |
2016-03-15 | 16C0767-04 | 9.80 ppb |
2016-03-15 | 16C0768-01 | 9.30 ppb |
2016-03-15 | 16C0768-02 | 9.50 ppb |
2016-03-15 | 16C0768-03 | 11.0 ppb |
2016-03-15 | 16C0768-04 | 9.00 ppb |
2016-03-15 | 16C0769-01 | 9.70 ppb |
2016-03-15 | 16C0769-02 | 10.00 ppb |
2016-03-15 | 16C0769-03 | 10.00 ppb |
2016-03-15 | 16C0769-04 | 10.00 ppb |
2016-06-20 | 16F1191-01 | 8.00 ppb |
2016-06-20 | 16F1191-02 | 8.10 ppb |
2016-06-20 | 16F1191-03 | 7.00 ppb |
2016-06-20 | 16F1191-04 | 7.20 ppb |
2016-06-20 | 16F1196-02 | 7.20 ppb |
2016-06-20 | 16F1196-03 | 8.10 ppb |
2016-06-20 | 16F1196-04 | 8.30 ppb |
2016-06-20 | 16F1200-01 | 7.60 ppb |
2016-06-20 | 16F1200-02 | 8.00 ppb |
2016-06-20 | 16F1200-03 | 8.10 ppb |
2016-06-20 | 16F1200-04 | 7.80 ppb |
2016-06-21 | 16F1196-01 | 7.30 ppb |
2016-09-14 | 16I0807-01 | 11.0 ppb |
2016-09-14 | 16I0807-02 | 11.0 ppb |
2016-09-14 | 16I0807-03 | 12.0 ppb |
2016-09-14 | 16I0807-04 | 11.0 ppb |
2016-09-14 | 16I0809-01 | 11.0 ppb |
2016-09-14 | 16I0809-02 | 13.0 ppb |
2016-09-14 | 16I0809-03 | 11.0 ppb |
2016-09-14 | 16I0809-04 | 11.0 ppb |
2016-09-14 | 16I0811-01 | 11.0 ppb |
2016-09-14 | 16I0811-02 | 12.0 ppb |
2016-09-14 | 16I0811-03 | 11.0 ppb |
2016-09-14 | 16I0811-04 | 11.0 ppb |
2016-12-13 | 16L0527-01 | 13.0 ppb |
2016-12-13 | 16L0527-02 | 14.0 ppb |
2016-12-13 | 16L0527-03 | 13.0 ppb |
2016-12-13 | 16L0527-04 | 12.0 ppb |
2016-12-13 | 16L0529-01 | 13.0 ppb |
2016-12-13 | 16L0529-02 | 12.0 ppb |
2016-12-13 | 16L0529-03 | 12.0 ppb |
2016-12-13 | 16L0529-04 | 11.0 ppb |
2016-12-13 | 16L0530-01 | 13.0 ppb |
2016-12-13 | 16L0530-02 | 12.0 ppb |
2016-12-13 | 16L0530-03 | 13.0 ppb |
2016-12-13 | 16L0530-04 | 12.0 ppb |
2017-03-14 | 17C0647-01 | 8.10 ppb |
2017-03-14 | 17C0647-02 | 8.20 ppb |
2017-03-14 | 17C0647-03 | 9.40 ppb |
2017-03-14 | 17C0647-04 | 9.60 ppb |
2017-03-14 | 17C0648-01 | 9.80 ppb |
2017-03-14 | 17C0648-02 | 8.50 ppb |
2017-03-14 | 17C0648-03 | 8.40 ppb |
2017-03-14 | 17C0648-04 | 8.20 ppb |
2017-03-14 | 17C0649-01 | 8.70 ppb |
2017-03-14 | 17C0649-02 | 8.60 ppb |
2017-03-14 | 17C0649-03 | 8.10 ppb |
2017-03-14 | 17C0649-04 | 8.10 ppb |
2017-06-14 | 17F0881-01 | 9.00 ppb |
2017-06-14 | 17F0881-02 | 8.70 ppb |
2017-06-14 | 17F0881-03 | 8.50 ppb |
2017-06-14 | 17F0881-04 | 10.00 ppb |
2017-06-14 | 17F0885-01 | 9.90 ppb |
2017-06-14 | 17F0885-02 | 8.80 ppb |
2017-06-14 | 17F0885-03 | 8.10 ppb |
2017-06-14 | 17F0885-04 | 9.00 ppb |
2017-06-14 | 17F0887-01 | 9.50 ppb |
2017-06-14 | 17F0887-02 | 9.30 ppb |
2017-06-14 | 17F0887-03 | 9.10 ppb |
2017-06-14 | 17F0887-04 | 9.00 ppb |
2017-09-19 | 17I0868-01 | 9.40 ppb |
2017-09-19 | 17I0868-02 | 9.60 ppb |
2017-09-19 | 17I0868-03 | 8.90 ppb |
2017-09-19 | 17I0868-04 | 9.30 ppb |
2017-09-19 | 17I0870-01 | 9.50 ppb |
2017-09-19 | 17I0870-02 | 9.00 ppb |
2017-09-19 | 17I0870-03 | 8.10 ppb |
2017-09-19 | 17I0870-04 | 9.40 ppb |
2017-09-19 | 17I0871-01 | 8.40 ppb |
2017-09-19 | 17I0871-02 | 9.00 ppb |
2017-09-19 | 17I0871-03 | 9.60 ppb |
2017-09-19 | 17I0871-04 | 8.90 ppb |
2017-12-11 | 17L0417-01 | 8.50 ppb |
2017-12-11 | 17L0417-02 | 10.00 ppb |
2017-12-11 | 17L0417-03 | 9.60 ppb |
2017-12-11 | 17L0417-04 | 9.90 ppb |
2017-12-11 | 17L0418-01 | 10.00 ppb |
2017-12-11 | 17L0418-02 | 11.0 ppb |
2017-12-11 | 17L0418-03 | 8.50 ppb |
2017-12-11 | 17L0418-04 | 10.00 ppb |
2017-12-11 | 17L0419-01 | 10.00 ppb |
2017-12-11 | 17L0419-02 | 10.00 ppb |
2017-12-11 | 17L0419-03 | 10.00 ppb |
2017-12-11 | 17L0419-04 | 11.0 ppb |
2018-03-14 | 18C0562-01 | 12.0 ppb |
2018-03-14 | 18C0562-02 | 12.0 ppb |
2018-03-14 | 18C0562-03 | 13.0 ppb |
2018-03-14 | 18C0562-04 | 13.0 ppb |
2018-03-14 | 18C0563-01 | 13.0 ppb |
2018-03-14 | 18C0563-02 | 13.0 ppb |
2018-03-14 | 18C0563-03 | 13.0 ppb |
2018-03-14 | 18C0563-04 | 13.0 ppb |
2018-03-14 | 18C0564-01 | 13.0 ppb |
2018-03-14 | 18C0564-02 | 13.0 ppb |
2018-03-14 | 18C0564-03 | 12.0 ppb |
2018-03-14 | 18C0564-04 | 13.0 ppb |
2018-06-19 | 18F1330-01 | 8.20 ppb |
2018-06-19 | 18F1330-02 | 7.20 ppb |
2018-06-19 | 18F1330-03 | 7.40 ppb |
2018-06-19 | 18F1330-04 | 7.40 ppb |
2018-06-19 | 18F1331-01 | 7.50 ppb |
2018-06-19 | 18F1331-02 | 7.10 ppb |
2018-06-19 | 18F1331-03 | 7.30 ppb |
2018-06-19 | 18F1331-04 | 7.90 ppb |
2018-06-19 | 18F1332-01 | 7.90 ppb |
2018-06-19 | 18F1332-02 | 7.90 ppb |
2018-06-19 | 18F1332-03 | 7.60 ppb |
2018-06-19 | 18F1332-04 | 7.40 ppb |
2018-09-11 | 18I0443-01 | 13.0 ppb |
2018-09-11 | 18I0443-02 | 14.0 ppb |
2018-09-11 | 18I0443-03 | 13.0 ppb |
2018-09-11 | 18I0443-04 | 13.0 ppb |
2018-09-11 | 18I0444-01 | 13.0 ppb |
2018-09-11 | 18I0444-02 | 15.0 ppb |
2018-09-11 | 18I0444-03 | 15.0 ppb |
2018-09-11 | 18I0444-04 | 16.0 ppb |
2018-09-11 | 18I0445-01 | 14.0 ppb |
2018-09-11 | 18I0445-02 | 14.0 ppb |
2018-09-11 | 18I0445-03 | 15.0 ppb |
2018-09-11 | 18I0445-04 | 15.0 ppb |
2018-12-11 | 18L0409-01 | 10.00 ppb |
2018-12-11 | 18L0409-02 | 11.0 ppb |
2018-12-11 | 18L0409-03 | 12.0 ppb |
2018-12-11 | 18L0409-04 | 11.0 ppb |
2018-12-11 | 18L0410-01 | 12.0 ppb |
2018-12-11 | 18L0410-02 | 11.0 ppb |
2018-12-11 | 18L0410-03 | 13.0 ppb |
2018-12-11 | 18L0410-04 | 13.0 ppb |
2018-12-11 | 18L0411-01 | 12.0 ppb |
2018-12-11 | 18L0411-02 | 13.0 ppb |
2018-12-11 | 18L0411-03 | 12.0 ppb |
2018-12-11 | 18L0411-04 | 12.0 ppb |
2019-03-12 | 19C0522-01 | 11.0 ppb |
2019-03-12 | 19C0522-02 | 10.00 ppb |
2019-03-12 | 19C0522-03 | 11.0 ppb |
2019-03-12 | 19C0522-04 | 11.0 ppb |
2019-03-12 | 19C0523-01 | 11.0 ppb |
2019-03-12 | 19C0523-02 | 11.0 ppb |
2019-03-12 | 19C0523-03 | 11.0 ppb |
2019-03-12 | 19C0523-04 | 11.0 ppb |
2019-03-12 | 19C0524-01 | 10.00 ppb |
2019-03-12 | 19C0524-02 | 11.0 ppb |
2019-03-12 | 19C0524-03 | 12.0 ppb |
2019-03-12 | 19C0524-04 | 11.0 ppb |
2019-06-18 | 19F1278-01 | 8.40 ppb |
2019-06-18 | 19F1278-02 | 8.70 ppb |
2019-06-18 | 19F1278-03 | 8.40 ppb |
2019-06-18 | 19F1278-04 | 8.20 ppb |
2019-06-18 | 19F1279-01 | 8.20 ppb |
2019-06-18 | 19F1279-02 | 8.20 ppb |
2019-06-18 | 19F1279-03 | 8.40 ppb |
2019-06-18 | 19F1279-04 | 7.90 ppb |
2019-06-18 | 19F1280-01 | 8.50 ppb |
2019-06-18 | 19F1280-02 | 8.30 ppb |
2019-06-18 | 19F1280-03 | 8.40 ppb |
2019-06-18 | 19F1280-04 | 8.30 ppb |
2019-09-11 | 19I0550-01 | 11.0 ppb |
2019-09-11 | 19I0550-02 | 11.0 ppb |
2019-09-11 | 19I0550-03 | 11.0 ppb |
2019-09-11 | 19I0550-04 | 11.0 ppb |
2019-09-11 | 19I0552-01 | 12.0 ppb |
2019-09-11 | 19I0552-02 | 11.0 ppb |
2019-09-11 | 19I0552-03 | 12.0 ppb |
2019-09-11 | 19I0552-04 | 11.0 ppb |
2019-09-11 | 19I0553-01 | 12.0 ppb |
2019-09-11 | 19I0553-02 | 11.0 ppb |
2019-09-11 | 19I0553-03 | 11.0 ppb |
2019-09-11 | 19I0553-04 | 11.0 ppb |
2019-12-11 | 19L0801-01 | 11.0 ppb |
2019-12-11 | 19L0801-02 | 11.0 ppb |
2019-12-11 | 19L0801-03 | 11.0 ppb |
2019-12-11 | 19L0801-04 | 11.0 ppb |
2019-12-11 | 19L0802-01 | 10.00 ppb |
2019-12-11 | 19L0802-02 | 11.0 ppb |
2019-12-11 | 19L0802-03 | 11.0 ppb |
2019-12-11 | 19L0802-04 | 11.0 ppb |
2019-12-11 | 19L0803-01 | 11.0 ppb |
2019-12-11 | 19L0803-02 | 11.0 ppb |
2019-12-11 | 19L0803-03 | 11.0 ppb |
2019-12-11 | 19L0803-04 | 11.0 ppb |