Know Your Environment. Protect Your Health.

Trichloroacetic acid

City of Rio Hondo

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)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20189.19 ppb85ND - 27.0 ppb
2019ND80ND
2020ND80ND
2021ND80ND
2022ND80ND
20230.363 ppb82ND - 1.60 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
2018-02-20AE1440125.6 ppb
2018-02-20AE1438417.4 ppb
2018-04-25AE2390027.0 ppb
2018-04-25AE238981.80 ppb
2018-08-15AE37180ND
2018-08-15AE371811.70 ppb
2018-10-11AE43247ND
2018-10-11AE43248ND
2019-02-08AE53730ND
2019-02-08AE53743ND
2019-04-04AE61179ND
2019-04-04AE61181ND
2019-07-10AE73887ND
2019-07-10AE73882ND
2019-10-23AE87400ND
2019-10-23AE87405ND
2020-03-06AF01686ND
2020-03-06AF01701ND
2020-06-09AF14636ND
2020-06-09AF14640ND
2020-08-19AF24263ND
2020-08-19AF24264ND
2020-10-07AF29811ND
2020-10-07AF29818ND
2021-01-27AF41320ND
2021-01-27AF41321ND
2021-04-29AF51908ND
2021-04-29AF51915ND
2021-08-18AF66830ND
2021-08-18AF66831ND
2021-12-20AF79063ND
2021-12-20AF79071ND
2022-02-03AF83271ND
2022-02-03AF83280ND
2022-04-19AF93713ND
2022-04-19AF93719ND
2022-09-26AG14709ND
2022-09-26AG14710ND
2022-11-17AG19188ND
2022-11-17AG19199ND
2023-02-01AG27116ND
2023-02-01AG27117ND
2023-05-18AG41027ND
2023-05-18AG41028ND
2023-08-03AG512701.60 ppb
2023-08-03AG512951.30 ppb
2023-11-09AG63015ND
2023-11-09AG63016ND