Know Your Environment. Protect Your Health.

Trichloroacetic acid

U.s.n., San Nicolas Island

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.500 ppb21ND - 1.000 ppb
2019ND20ND
2020ND10ND
2021ND40ND
20220.500 ppb41ND - 2.00 ppb
20230.750 ppb42ND - 2.00 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
2018-01-09CA5610702_DST_015-2018010905301.000 ppb
2018-09-10CA5610702_DST_015-201809101730ND
2019-01-15CA5610702_DST_015-201901150345ND
2019-09-03CA5610702_DST_015-201909030500ND
2020-01-14CA5610702_DST_015-202001140600ND
2021-01-26CA5610702_DST_015-202101260940ND
2021-04-06CA5610702_DST_015-202104060430ND
2021-07-06CA5610702_DST_015-202107060500ND
2021-10-05CA5610702_DST_015-202110050530ND
2022-01-04CA5610702_DST_015-202201040400ND
2022-04-05CA5610702_DST_015-202204050530ND
2022-07-06CA5610702_DST_015-202207060500ND
2022-10-04CA5610702_DST_015-2022100405302.00 ppb
2023-01-12CA5610702_DST_015-202301120400ND
2023-04-04CA5610702_DST_015-2023040404002.00 ppb
2023-07-05CA5610702_DST_015-202307050700ND
2023-10-03CA5610702_DST_015-2023100306001.000 ppb