Know Your Environment. Protect Your Health.

Trichloroacetic acid

North Rural Water Supply Corporation

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

29

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.200 ppb81ND - 1.60 ppb
20190.425 ppb83ND - 1.20 ppb
20202.14 ppb881.40 ppb - 3.00 ppb
20212.28 ppb881.30 ppb - 3.50 ppb
20220.950 ppb84ND - 2.20 ppb
20231.58 ppb85ND - 4.20 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for trichloroacetic acid was defined by the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer and harm to reproduction and child development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-28Q1808324004ND
2018-02-28Q1808324002ND
2018-05-31Q1821636002ND
2018-05-31Q1821636001ND
2018-08-21Q1833769001ND
2018-08-21Q1833769002ND
2018-11-14Q18460920011.60 ppb
2018-11-14Q1846092002ND
2019-02-27Q1908293001ND
2019-02-27Q1908293002ND
2019-05-29Q19296180031.20 ppb
2019-05-29Q19296180041.20 ppb
2019-09-18Q1966331002ND
2019-09-18Q19663310011.000 ppb
2019-12-03Q1978569001ND
2019-12-03Q1978569002ND
2020-02-26Q20072760031.40 ppb
2020-02-26Q20072760041.40 ppb
2020-06-03Q20219800012.40 ppb
2020-06-03Q20219800021.90 ppb
2020-08-26Q20342150013.00 ppb
2020-08-26Q20342150023.00 ppb
2020-11-17Q20453860012.00 ppb
2020-11-17Q20453860022.00 ppb
2021-03-03Q21057000011.30 ppb
2021-03-03Q21057000021.30 ppb
2021-05-26Q21136980013.50 ppb
2021-05-26Q21136980023.20 ppb
2021-08-24Q21229840012.90 ppb
2021-08-24Q21229840023.10 ppb
2021-12-01Q21334940011.50 ppb
2021-12-01Q21334940021.40 ppb
2022-02-14Q2205193003ND
2022-02-14Q2205193004ND
2022-04-25Q2212325001ND
2022-04-25Q2212325002ND
2022-08-02Q22220180021.40 ppb
2022-09-27Q22290060011.90 ppb
2022-11-16Q22344710012.10 ppb
2022-11-16Q22344710022.20 ppb
2023-02-21Q23070160011.30 ppb
2023-02-21Q23070160021.60 ppb
2023-06-07Q23214060034.10 ppb
2023-06-07Q23214060044.20 ppb
2023-09-06Q2338472001ND
2023-09-06Q2338472002ND
2023-12-04Q2351324001ND
2023-12-04Q23513240021.40 ppb