Know Your Environment. Protect Your Health.

Trichloroacetic acid

City of Sansom Park

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)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.163 ppb81ND - 1.30 ppb
20190.675 ppb84ND - 1.60 ppb
20200.250 ppb82ND - 1.000 ppb
20210.125 ppb81ND - 1.000 ppb
2022ND80ND
20230.138 ppb81ND - 1.10 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
2018-02-07Q1805498002ND
2018-02-07Q1805498001ND
2018-05-22Q1820729002ND
2018-05-22Q18207290011.30 ppb
2018-09-12Q1836539001ND
2018-09-12Q1836539002ND
2018-11-08Q1844780001ND
2018-11-08Q1844780002ND
2019-02-06Q19054960011.60 ppb
2019-02-06Q19054960021.10 ppb
2019-05-02Q19181460161.30 ppb
2019-05-02Q1918146017ND
2019-09-13Q1965277002ND
2019-09-13Q1965277001ND
2019-11-18Q19771250011.40 ppb
2019-11-18Q1977125002ND
2020-01-21Q2002279034ND
2020-01-21Q2002279035ND
2020-05-21Q2020444001ND
2020-05-21Q2020444002ND
2020-09-01Q20348330171.000 ppb
2020-09-01Q2034833018ND
2020-10-28Q20416170011.000 ppb
2020-10-28Q2041617002ND
2021-03-09Q2106121019ND
2021-03-09Q2106121020ND
2021-04-28Q2110742001ND
2021-04-28Q2110742002ND
2021-08-03Q2120184001ND
2021-08-03Q2120184002ND
2021-11-15Q21317820061.000 ppb
2021-11-15Q2131782007ND
2022-03-14Q2208529009ND
2022-03-14Q2208529010ND
2022-05-05Q2213616008ND
2022-05-05Q2213616009ND
2022-08-01Q2221891001ND
2022-08-01Q2221891002ND
2022-10-13Q2231074016ND
2022-10-13Q2231074027ND
2023-01-18Q2302599001ND
2023-01-18Q2302599002ND
2023-04-13Q23137130091.10 ppb
2023-04-13Q2313713010ND
2023-08-15Q2334087037ND
2023-08-15Q2334087038ND
2023-12-01Q2351637001ND
2023-12-01Q2351637002ND