Know Your Environment. Protect Your Health.

Trichloroacetic acid

City of Lacy Lakeview

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)

36

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.25 ppb85ND - 3.90 ppb
20193.10 ppb881.000 ppb - 7.30 ppb
20206.93 ppb882.00 ppb - 23.7 ppb
20212.48 ppb85ND - 5.00 ppb
20221.69 ppb86ND - 3.60 ppb
20231.06 ppb84ND - 2.90 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
2018-02-13AE135171.10 ppb
2018-02-13AE135161.10 ppb
2018-05-02AE24754ND
2018-05-02AE24747ND
2018-07-17AE335651.000 ppb
2018-07-17AE33568ND
2018-10-11AE432172.90 ppb
2018-10-11AE432233.90 ppb
2019-03-20AE592081.000 ppb
2019-03-20AE592101.000 ppb
2019-05-22AE676044.90 ppb
2019-05-22AE676447.30 ppb
2019-08-15AE788423.40 ppb
2019-08-15AE788404.30 ppb
2019-11-18AE894901.50 ppb
2019-11-18AE894911.40 ppb
2020-01-29AE959222.50 ppb
2020-01-29AE959262.00 ppb
2020-04-23AF078452.60 ppb
2020-04-23AF078492.10 ppb
2020-08-17AF236892.00 ppb
2020-08-17AF236912.10 ppb
2020-12-01AF3597223.7 ppb
2020-12-01AF3597318.4 ppb
2021-02-23AF43905ND
2021-02-23AF43908ND
2021-04-07AF492801.10 ppb
2021-04-07AF49283ND
2021-08-10AF655744.20 ppb
2021-08-10AF655774.50 ppb
2021-10-25AF745135.00 ppb
2021-10-25AF745215.00 ppb
2022-01-24AF81236ND
2022-01-24AF812371.000 ppb
2022-04-11AF925942.20 ppb
2022-04-11AF925962.40 ppb
2022-07-07AG036523.60 ppb
2022-07-07AG036533.30 ppb
2022-10-05AG160741.000 ppb
2022-10-05AG16077ND
2023-02-14AG28781ND
2023-02-14AG28785ND
2023-04-26AG38136ND
2023-04-26AG38158ND
2023-09-20AG570381.30 ppb
2023-09-20AG570411.50 ppb
2023-12-04AG652202.80 ppb
2023-12-04AG652212.90 ppb