Know Your Environment. Protect Your Health.

Trichloroacetic acid

City of West

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)

21

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.35 ppb83ND - 7.70 ppb
20193.85 ppb84ND - 14.6 ppb
20206.18 ppb84ND - 38.6 ppb
20211.46 ppb84ND - 4.60 ppb
20221.19 ppb84ND - 3.70 ppb
20230.750 ppb82ND - 3.40 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
2018-02-13AE13520ND
2018-02-13AE13519ND
2018-05-02AE24777ND
2018-05-02AE247551.000 ppb
2018-07-17AE33564ND
2018-07-17AE335662.10 ppb
2018-10-11AE43219ND
2018-10-11AE432257.70 ppb
2019-03-12AE58023ND
2019-03-12AE580302.10 ppb
2019-04-18AE62944ND
2019-04-18AE629451.60 ppb
2019-08-12AE77973ND
2019-08-12AE7797114.6 ppb
2019-11-04AE88287ND
2019-11-04AE8829012.5 ppb
2020-02-18AE98659ND
2020-02-18AE986602.50 ppb
2020-05-05AF09306ND
2020-05-05AF093074.00 ppb
2020-08-25AF25006ND
2020-08-25AF250074.30 ppb
2020-12-02AF3622438.6 ppb
2020-12-02AF36225ND
2021-03-16AF47044ND
2021-03-16AF470451.000 ppb
2021-05-11AF53213ND
2021-06-01AF560322.10 ppb
2021-08-10AF655704.00 ppb
2021-08-10AF65572ND
2021-10-26AF746734.60 ppb
2021-10-26AF74675ND
2022-02-17AF85482ND
2022-02-17AF854841.10 ppb
2022-06-02AF99309ND
2022-06-02AF993122.90 ppb
2022-08-10AG08507ND
2022-08-10AG085083.70 ppb
2022-11-22AG19588ND
2022-11-22AG196131.80 ppb
2023-03-15AG33076ND
2023-03-15AG33077ND
2023-05-18AG41005ND
2023-05-18AG41006ND
2023-08-22AG53406ND
2023-08-22AG534083.40 ppb
2023-10-05AG586032.60 ppb
2023-10-05AG58605ND